5,100,000 SHARES (1)

                               CARREKER-ANTINORI, INC.

                                     COMMON STOCK


                                UNDERWRITING AGREEMENT

                                                     ________________ __, 1998


BANCAMERICA ROBERTSON STEPHENS
HAMBRECHT & QUIST LLC
LEHMAN BROTHERS INC.
  As Representatives of the several Underwriters
c/o BancAmerica Robertson Stephens
555 California Street
Suite 2600
San Francisco, California  94104

Ladies and Gentlemen:

          Carreker-Antinori, Inc., a Delaware corporation (the "Company"), and
certain stockholders of the Company named in Schedule B hereto (hereafter called
the "Selling Stockholders") address you as the Representatives of each of the
persons, firms and corporations listed in Schedule A hereto (herein collectively
called the "Underwriters") and hereby confirm their respective agreements with
the several Underwriters as follows:

          1.   DESCRIPTION OF SHARES.  The Company proposes to issue and sell
3,650,000 shares of its authorized and unissued Common Stock, par value $.01 per
share, to the several Underwriters.  The Selling Stockholders, acting severally
and not jointly, propose to sell an aggregate of 1,450,000 shares of the
Company's authorized and outstanding Common Stock, par value $.01 per share, to
the several Underwriters.  The 3,650,000 shares of Common Stock, par value $.01
per share, of the Company to be sold by the Company are hereinafter called the
"Company Shares" and the 1,450,000 shares of Common Stock, par value $.01 per
share, to be sold by the Selling Stockholders are hereinafter called the
"Selling Stockholder Shares."  The Company Shares and the Selling Stockholder
Shares are hereinafter collectively referred to as the "Firm Shares."  The
Company and a Selling Stockholder also propose to grant, severally and not
jointly, to the Underwriters an option to purchase up to 765,000 additional
shares of the Company's Common Stock, par value $.01 per share (the "Option
Shares"), as provided in Section 7 hereof.  As used in this Agreement, the term
"Shares" shall include the Firm Shares and the Option Shares.  All shares of
Common Stock, par value $.01 per share, of the Company to be outstanding after
giving effect to the sales contemplated hereby, including the Shares, are
hereinafter referred to as "Common Stock."

          2.   REPRESENTATIONS, WARRANTIES AND AGREEMENTS OF THE COMPANY AND THE
SELLING STOCKHOLDERS.

               I.   The Company represents and warrants to and agrees with each
Underwriter that:

               (a)  A registration statement on Form S-1 (File No. 333-48399) 
with respect to the Shares, including a prospectus subject to completion, has 
been prepared by the Company in conformity with the requirements 

- ---------------------
(1) Plus an option to purchase up to 765,000 additional shares from the Company
and a Selling Stockholder of the Company to cover over-allotments.




of the Securities Act of 1933, as amended (the "Act"), and the applicable rules
and regulations (the "Rules and Regulations") of the Securities and Exchange
Commission (the "Commission") under the Act and has been filed with the
Commission; such amendments to such registration statement, such amended
prospectuses subject to completion and such abbreviated registration statements
pursuant to Rule 462(b) of the Rules and Regulations as may have been required
prior to the date hereof have been similarly prepared and filed with the
Commission; and the Company will file such additional amendments to such
registration statement, such amended prospectuses subject to completion and such
abbreviated registration statements as may hereafter be required.  Copies of
such registration statement and amendments, of each related prospectus subject
to completion (the "Preliminary Prospectuses") and of any abbreviated
registration statement pursuant to Rule 462(b) of the Rules and Regulations have
been delivered to you.  The Company meets the requirements for filing a
registration statement on Form S-1 under the Act.

               If the registration statement relating to the Shares has been 
declared effective under the Act by the Commission, the Company will prepare 
and promptly file with the Commission the information omitted from the 
registration statement pursuant to Rule 430A(a) or, if BancAmerica Robertson 
Stephens, on behalf of the several Underwriters, shall agree to the 
utilization of Rule 434 of the Rules and Regulations, the information 
required to be included in any term sheet filed pursuant to Rule 434(b) or 
(c), as applicable, of the Rules and Regulations pursuant to subparagraph 
(1), (4) or (7) of Rule 424(b) of the Rules and Regulations or as part of a 
post-effective amendment to the registration statement (including a final 
form of prospectus).  If the registration statement relating to the Shares 
has not been declared effective under the Act by the Commission, the Company 
will prepare and promptly file an amendment to the registration statement, 
including a final form of prospectus, or, if BancAmerica Robertson Stephens, 
on behalf of the several Underwriters, shall agree to the utilization of Rule 
434 of the Rules and Regulations, the information required to be included in 
any term sheet filed pursuant to Rule 434(b) or (c), as applicable, of the 
Rules and Regulations.  The term "Registration Statement" as used in this 
Agreement shall mean such registration statement, including financial 
statements, schedules and exhibits, in the form in which it became or 
becomes, as the case may be, effective (including, if the Company omitted 
information from the registration statement pursuant to Rule 430A(a) or files 
a term sheet pursuant to Rule 434 of the Rules and Regulations, the 
information deemed to be a part of the registration statement at the time it 
became effective pursuant to Rule 430A(b) or Rule 434(d) of the Rules and 
Regulations) and, in the event of any amendment thereto or the filing of any 
abbreviated registration statement pursuant to Rule 462(b) of the Rules and 
Regulations relating thereto after the effective date of such registration 
statement, shall also mean (from and after the effectiveness of such 
amendment or the filing of such abbreviated registration statement) such 
registration statement as so amended, together with any such abbreviated 
registration statement.  The term "Prospectus" as used in this Agreement 
shall mean the prospectus relating to the Shares as included in such 
Registration Statement at the time it becomes effective (including, if the 
Company omitted information from the Registration Statement pursuant to Rule 
430A(a) of the Rules and Regulations, the information deemed to be a part of 
the Registration Statement at the time it became effective pursuant to Rule 
430A(b) of the Rules and Regulations); PROVIDED, HOWEVER, that if in reliance 
on Rule 434 of the Rules and Regulations and with the consent of BancAmerica 
Robertson Stephens, on behalf of the several Underwriters, the Company shall 
have provided to the Underwriters a term sheet pursuant to Rule 434(b) or 
(c), as applicable, prior to the time that a confirmation is sent or given 
for purposes of Section 2(10)(a) of the Act, the term "Prospectus" shall mean 
the "prospectus subject to completion" (as defined in Rule 434(g) of the 
Rules and Regulations) last provided to the Underwriters by the Company and 
circulated by the Underwriters to all prospective purchasers of the Shares 
(including the information deemed to be a part of the Registration Statement 
at the time it became effective pursuant to Rule 434(d) of the Rules and 
Regulations).  Notwithstanding the foregoing, if any revised prospectus shall 
be provided to the Underwriters by the Company for use in connection with the 
offering of the Shares that differs from the prospectus referred to in the 
immediately preceding sentence (whether or not such revised prospectus is 
required to be filed with the Commission pursuant to Rule 424(b) of the Rules 
and Regulations), the term "Prospectus" shall refer to such revised 
prospectus from and after the time it is first provided to the Underwriters 
for such use. If in reliance on Rule 434 of the Rules and Regulations and 
with the consent of BancAmerica Robertson Stephens, on behalf of the several 
Underwriters, the Company shall have provided to the Underwriters a term 
sheet pursuant to Rule 434(b) or (c), as applicable, prior to the time that a 
confirmation is sent or given for purposes of Section 2(10)(a) of the Act, 
the Prospectus and the term sheet, together, will not be materially different 
from the prospectus in the Registration Statement.  

                                      2



               (b)  The Commission has not issued any order preventing or 
suspending the use of any Preliminary Prospectus or instituted proceedings 
for that purpose, and each such Preliminary Prospectus has conformed in all 
material respects to the requirements of the Act and the Rules and 
Regulations and, as of its date, has not included any untrue statement of a 
material fact or omitted to state a material fact necessary to make the 
statements therein, in the light of the circumstances under which they were 
made, not misleading; and at the time the Registration Statement became or 
becomes, as the case may be, effective and at all times subsequent thereto up 
to and on the Closing Date (hereinafter defined) and on any later date on 
which Option Shares are to be purchased, (i) the Registration Statement and 
the Prospectus, and any amendments or supplements thereto, contained and will 
contain all material information required to be included therein by the Act 
and the Rules and Regulations and will in all material respects conform to 
the requirements of the Act and the Rules and Regulations, (ii) the 
Registration Statement, and any amendments or supplements thereto, did not 
and will not include any untrue statement of a material fact or omit to state 
a material fact required to be stated therein or necessary to make the 
statements therein not misleading, and (iii) the Prospectus, and any 
amendments or supplements thereto, did not and will not include any untrue 
statement of a material fact or omit to state a material fact necessary to 
make the statements therein, in the light of the circumstances under which 
they were made, not misleading; PROVIDED, HOWEVER, that none of the 
representations and warranties contained in this subparagraph (b) shall apply 
to information contained in or omitted from the Registration Statement or 
Prospectus, or any amendment or supplement thereto, in reliance upon, and in 
conformity with, written information furnished to the Company by such 
Underwriter specifically for use in the preparation thereof.

               (c)  Each of the Company and Antinori Software, Inc., a 
Georgia corporation (the "Subsidiary"), has been duly incorporated and is 
validly existing as a corporation in good standing under the laws of the 
State of Georgia with full power and authority (corporate and other) to own, 
lease and operate its properties and conduct its business as described in the 
Prospectus; the Company owns all of the outstanding capital stock of the 
Subsidiary free and clear of any pledge, lien, security interest, 
encumbrance, claim or equitable interest; each of the Company and the 
Subsidiary is duly qualified to do business as a foreign corporation and is 
in good standing in each jurisdiction in which the ownership or leasing of 
its properties or the conduct of its business requires such qualification, 
except where the failure to be so qualified or be in good standing would not 
have a material adverse effect on the condition (financial or otherwise), 
earnings, operations, business or business prospects of the Company and the 
Subsidiary, considered as one enterprise; no proceeding has been instituted 
in any such jurisdiction, revoking, limiting or curtailing, or seeking to 
revoke, limit or curtail, such power and authority or qualification; each of 
the Company and the Subsidiary is in possession of and operating in 
compliance with all authorizations, licenses, certificates, consents, orders 
and permits from state, federal and other regulatory authorities which are 
material to the conduct of the business of the Company and the Subsidiary, 
considered as one enterprise, all of which are valid and in full force and 
effect; each material contract or other instrument to which the Company or 
the Subsidiary is a party or by which their respective properties or business 
is or may be bound or affected has been duly and validly executed by the 
Company and is in full force and effect in all material respects and is 
enforceable against the parties thereto in accordance with its terms, except 
as the enforcement thereof may be limited by applicable bankruptcy, 
insolvency, reorganization, moratorium or other similar laws relating to or 
affecting creditors' rights generally or by general equitable principles; 
neither the Company nor the Subsidiary is in violation of its respective 
charter or bylaws or in default in the performance or observance of any 
material obligation, agreement, covenant or condition contained in any 
material bond, debenture, note or other evidence of indebtedness, or in any 
material lease, contract, indenture, mortgage, deed of trust, loan agreement, 
joint venture or other agreement or instrument to which the Company or the 
Subsidiary is a party or by which it or the Subsidiary or their respective 
properties may be bound; and neither the Company nor the Subsidiary is in 
material violation of any law, order, rule, regulation, writ, injunction, 
judgment or decree of any court, government or governmental agency or body, 
domestic or foreign, having jurisdiction over the Company or the Subsidiary 
or over their respective properties of which it has knowledge.  The Company 
does not own or have any ownership interest in, directly or indirectly, any 
corporation, association or other entity other than the Subsidiary and 
INFITEQ, LLC.

               (d)  The Company has full legal right, power and authority to 
enter into this Agreement and perform the transactions contemplated hereby.  
This Agreement has been duly authorized, executed and delivered by the 
Company and is a valid and binding agreement on the part of the Company, 
enforceable in accordance with its terms, 

                                      3



except as rights to indemnification or contribution hereunder may be limited 
by applicable law or public policy and except as the enforcement hereof may 
be limited by applicable bankruptcy, insolvency, reorganization, moratorium 
or other similar laws relating to or affecting creditors' rights generally or 
by general equitable principles; the performance of this Agreement and the 
consummation of the transactions herein contemplated will not result in a 
material breach or violation of any of the terms and provisions of, or 
constitute a default under, (i) any bond, debenture, note or other evidence 
of indebtedness, or under any lease, contract, indenture, mortgage, deed of 
trust, loan agreement, license agreement, joint venture or other agreement or 
instrument to which the Company or the Subsidiary is a party or by which it 
or the Subsidiary or their respective properties may be bound, (ii) the 
charter or bylaws of the Company or the Subsidiary, or (iii) any law, order, 
rule, regulation, writ, injunction, judgment or decree of any court, 
government or governmental agency or body, domestic or foreign, having 
jurisdiction over the Company or the Subsidiary or over their respective 
properties.  No consent, approval, authorization or order of or qualification 
with any court, government or governmental agency or body, domestic or 
foreign, having jurisdiction over the Company or the Subsidiary or over their 
respective properties is required for the execution and delivery of this 
Agreement and the consummation by the Company or the Subsidiary of the 
transactions herein contemplated, except such as may be required under the 
Act or under state or other securities or Blue Sky laws, all of which 
requirements have been satisfied in all material respects.

               (e)  There is not any pending or, to the best of the Company's 
knowledge, threatened action, suit, claim or proceeding against the Company, 
the Subsidiary or any of their respective officers or any of their respective 
properties, assets or rights before any court, government or governmental 
agency or body, domestic or foreign, having jurisdiction over the Company or 
the Subsidiary or over their respective officers or properties or otherwise 
which (i) could result in any material adverse change in the condition 
(financial or otherwise), earnings, operations, business or business 
prospects of the Company and the Subsidiary, considered as one enterprise, or 
might materially and adversely affect their properties, assets or rights, 
(ii) could prevent consummation of the transactions contemplated hereby or 
(iii) is required to be disclosed in the Registration Statement or Prospectus 
and is not so disclosed; and there are no agreements, contracts, leases or 
documents of the Company or the Subsidiary of a character required to be 
described or referred to in the Registration Statement or Prospectus or to be 
filed as an exhibit to the Registration Statement by the Act or the Rules and 
Regulations which have not been accurately described in all material respects 
in the Registration Statement or Prospectus or filed as exhibits to the 
Registration Statement.

               (f)  All outstanding shares of capital stock of the Company 
(including, as of the Closing Date, the Selling Stockholder Shares) have been 
duly authorized and validly issued and are fully paid and nonassessable, have 
been issued in compliance with all federal and state securities laws, were 
not issued in violation of or subject to any preemptive rights or other 
rights to subscribe for or purchase securities, and the authorized and 
outstanding capital stock of the Company is as set forth in the Prospectus 
under the caption "Capitalization" and conforms in all material respects to 
the statements relating thereto contained in the Registration Statement and 
the Prospectus (and such statements correctly state the substance of the 
instruments defining the capitalization of the Company); the Company Shares 
and the Option Shares to be purchased from the Company have been duly 
authorized for issuance and sale to the Underwriters pursuant to this 
Agreement and, when issued and delivered by the Company against payment 
therefor in accordance with the terms of this Agreement, will be duly and 
validly issued and fully paid and nonassessable, and will be sold free and 
clear of any pledge, lien, security interest, encumbrance, claim or equitable 
interest; and no preemptive right, co-sale right, registration right, right 
of first refusal or other similar right of stockholders to which the Company 
is a party exists with respect to any of the Company Shares or Option Shares 
to be purchased from the Company hereunder or the issuance and sale thereof 
other than those that have been satisfied or expressly waived prior to the 
date hereof and those that will automatically expire upon and will not apply 
to the consummation of the transactions contemplated on the Closing Date.  No 
further approval or authorization of any stockholder, the Board of Directors 
of the Company or others is required for the issuance and sale or transfer of 
the Shares except as may be required under the Act, the Securities Exchange 
Act of 1934, as amended (the "Exchange Act"), or under state or other 
securities or Blue Sky laws.  All issued and outstanding shares of capital 
stock of the Subsidiary have been duly authorized and validly issued and are 
fully paid and nonassessable, and were not issued in violation of or subject 
to any preemptive right, or other rights to subscribe for or purchase shares 
and are owned by the Company free and clear of any pledge, lien, security 
interest, encumbrance, claim or equitable interest.  Except as disclosed in 
the Prospectus and the financial 

                                      4



statements of the Company, and the related notes thereto, included in the 
Prospectus, neither the Company nor the Subsidiary has outstanding any 
options to purchase, or any preemptive rights or other rights to subscribe 
for or to purchase, any securities or obligations convertible into, or any 
contracts or commitments to issue or sell, shares of its capital stock or any 
such options, rights, convertible securities or obligations.  The description 
of the Company's stock option, stock bonus and other stock plans or 
arrangements, and the options or other rights granted and exercised 
thereunder, set forth in the Prospectus accurately and fairly presents the 
information required to be shown with respect to such plans, arrangements, 
options and rights.

               (g)  Ernst & Young LLP, which has examined the consolidated 
financial statements of the Company, together with the related schedules and 
notes, as of January 31, 1997 and 1998 and for each of the years in the three 
(3) years ended January 31, 1998 filed with the Commission as a part of the 
Registration Statement, which are included in the Prospectus, are independent 
accountants within the meaning of the Act and the Rules and Regulations; the 
audited consolidated financial statements of the Company, together with the 
related schedules and notes, and the unaudited consolidated financial 
information, forming part of the Registration Statement and Prospectus, 
fairly present the financial position and the results of operations of the 
Company and the Subsidiary at the respective dates and for the respective 
periods to which they apply; and all audited consolidated financial 
statements of the Company, together with the related schedules and notes, and 
the unaudited consolidated financial information, filed with the Commission 
as part of the Registration Statement, have been prepared in accordance with 
generally accepted accounting principles consistently applied throughout the 
periods involved except as may be otherwise stated therein.  The selected and 
summary financial and statistical data included in the Registration Statement 
present fairly the information shown therein and have been compiled on a 
basis consistent with the audited financial statements presented therein.  No 
other financial statements or schedules are required to be included in the 
Registration Statement.

               (h)  Subsequent to the respective dates as of which 
information is given in the Registration Statement and Prospectus, there has 
not been (i) any material adverse change in the condition (financial or 
otherwise), earnings, operations, business or business prospects of the 
Company and the Subsidiary, considered as one enterprise, (ii) any 
transaction that is material to the Company and the Subsidiary, considered as 
one enterprise, except transactions entered into in the ordinary course of 
business, (iii) any obligation, direct or contingent, that is material to the 
Company and the Subsidiary, considered as one enterprise, incurred by the 
Company or the Subsidiary, except obligations incurred in the ordinary course 
of business, (iv) any change in the capital stock or outstanding indebtedness 
of the Company or the Subsidiary that is material to the Company and the 
Subsidiary, considered as one enterprise, (v) any dividend or distribution of 
any kind declared, paid or made on the capital stock of the Company or the 
Subsidiary, or (vi) any loss or damage (whether or not insured) to the 
property of the Company or the Subsidiary which has been sustained which has 
a material adverse effect on the condition (financial or otherwise), 
earnings, operations, business or business prospects of the Company and the 
Subsidiary, considered as one enterprise.

               (i)  Except as set forth in the Registration Statement and 
Prospectus, (i) each of the Company and the Subsidiary has good and 
marketable title to all properties and assets described in the Registration 
Statement and Prospectus as owned by it, free and clear of any pledge, lien, 
security interest, encumbrance, claim or equitable interest, other than such 
as would not have a material adverse effect on the condition (financial or 
otherwise), earnings, operations, business or business prospects of the 
Company and the Subsidiary, considered as one enterprise, (ii) the agreements 
to which the Company or the Subsidiary is a party described in the 
Registration Statement and Prospectus are valid agreements, enforceable by 
the Company and the Subsidiary (as applicable), except as the enforcement 
thereof may be limited by applicable bankruptcy, insolvency, reorganization, 
moratorium or other similar laws relating to or affecting creditors' rights 
generally or by general equitable principles and, to the best of the 
Company's knowledge, the other contracting party or parties thereto are not 
in material breach or material default under any of such agreements, and 
(iii) each of the Company and the Subsidiary has valid and enforceable leases 
for all properties described in the Registration Statement and Prospectus as 
leased by it, except as the enforcement thereof may be limited by applicable 
bankruptcy, insolvency, reorganization, moratorium or other similar laws 
relating to or affecting creditors' rights generally or by general equitable 
principles.  Except as set forth in the Registration Statement and 
Prospectus, the 

                                     5



Company owns or leases all such properties as are necessary to its operations 
as now conducted or as proposed to be conducted.

               (j)  The Company and the Subsidiary have timely filed all 
necessary federal, state and foreign income and franchise tax returns and 
have paid all taxes shown thereon as due, and there is no tax deficiency that 
has been or, to the best of the Company's knowledge, might be asserted 
against the Company or the Subsidiary, except where the failure to file such 
tax returns or pay such taxes or the existence of such tax deficiency would 
not have a material adverse effect on the condition (financial or otherwise), 
earnings, operations, business or business prospects of the Company and the 
Subsidiary, considered as one enterprise; and all tax liabilities are 
adequately provided for on the books of the Company and the Subsidiary.

               (k)  Except as described in the Registration Statement and the 
Prospectus, neither the Company nor the Subsidiary has any employee benefit 
plans (including, without limitation, profit sharing plans) or deferred 
compensation arrangements.

               (l)  The Company and the Subsidiary maintain insurance with 
insurers of recognized financial responsibility of the types and in the 
amounts generally deemed adequate for their respective businesses and 
consistent with insurance coverage maintained by similar companies in similar 
businesses, including, but not limited to, insurance covering real and 
personal property owned or leased by the Company or the Subsidiary against 
theft, damage, destruction, acts of vandalism and all other risks customarily 
insured against, all of which insurance is in full force and effect; neither 
the Company nor the Subsidiary has been refused any insurance coverage sought 
or applied for; and neither the Company nor the Subsidiary has any reason to 
believe that it will not be able to renew its existing insurance coverage as 
and when such coverage expires or to obtain similar coverage from similar 
insurers as may be necessary to continue its business at a cost that would 
not materially and adversely affect the condition (financial or otherwise), 
earnings, operations, business or business prospects of the Company and the 
Subsidiary, considered as one enterprise.

               (m)  To the best of the Company's knowledge, no labor 
disturbance by the employees of the Company or the Subsidiary exists or is 
imminent; and the Company is not aware of any existing or imminent labor 
disturbance by the employees of any of its principal suppliers, 
subassemblers, value added resellers, subcontractors, independent software 
vendors, original equipment manufacturers, authorized dealers or distributors 
that might be expected to result in a material adverse change in the 
condition (financial or otherwise), earnings, operations, business or 
business prospects of the Company and the Subsidiary, considered as one 
enterprise.  No collective bargaining agreement exists with any of the 
Company's employees and, to the Company's knowledge, no such agreement is 
imminent.

               (n)  Each of the Company and the Subsidiary owns or possesses 
adequate rights to use all patents, patent rights, inventions, trade secrets, 
know-how, trademarks, service marks, trade names and copyrights which are 
necessary to conduct its businesses as described in the Registration 
Statement and Prospectus; the expiration of any patents, patent rights, trade 
secrets, trademarks, service marks, trade names or copyrights would not have 
a material adverse effect on the condition (financial or otherwise), 
earnings, operations, business or business prospects of the Company and the 
Subsidiary, considered as one enterprise; the Company has not received any 
notice of, and has no knowledge of, any infringement of or conflict with 
asserted rights of the Company by others with respect to any patent, patent 
rights, inventions, trade secrets, know-how, trademarks, service marks, trade 
names or copyrights; and the Company has not received any notice of, and has 
no knowledge of, any infringement of or conflict with asserted rights of 
others with respect to any patent, patent rights, inventions, trade secrets, 
know-how, trademarks, service marks, trade names or copyrights which, singly 
or in the aggregate, if the subject of an unfavorable decision, ruling or 
finding, might have a material adverse effect on the condition (financial or 
otherwise), earnings, operations, business or business prospects of the 
Company and the Subsidiary, considered as one enterprise.

               (o)  The statements in the Prospectus, under the heading "Certain
Transactions," set forth all existing agreements, arrangements, understandings
or transactions or proposed agreements, arrangements, 

                                     6



understandings or transactions, between or among the Company and the 
Subsidiary, on the one hand, and any officer, director or stockholder of the 
Company or the Subsidiary, or with any partner, affiliate or associate of any 
of the foregoing persons or entities, on the other hand, required to be set 
forth or described thereunder.
          
               (p)  The Common Stock has been approved for quotation on The 
Nasdaq National Market, subject to official notice of issuance.

               (q)  The Company has been advised concerning the Investment 
Company Act of 1940, as amended (the "1940 Act"), and the rules and 
regulations thereunder, and has in the past conducted, and intends in the 
future to conduct, its affairs in such a manner as to ensure that it will not 
become an "investment company" or a company "controlled" by an "investment 
company" within the meaning of the 1940 Act and such rules and regulations.  

               (r)  The Company has not distributed and will not distribute 
prior to the later of (i) the Closing Date, or any date on which Option 
Shares are to be purchased, as the case may be, and (ii) completion of the 
distribution of the Shares, any offering material in connection with the 
offering and sale of the Shares other than any Preliminary Prospectuses, the 
Prospectus, the Registration Statement and other materials, if any, permitted 
by the Act.

               (s)  Neither the Company nor the Subsidiary has at any time 
during the last five (5) years (i) made any unlawful contribution to any 
candidate for foreign office or failed to disclose fully any contribution in 
violation of law, or (ii) made any payment to any federal or state 
governmental officer or official, or other person charged with similar public 
or quasi-public duties, other than payments required or permitted by the laws 
of the United States or any jurisdiction thereof.

               (t)  The Company has not taken and will not take, directly or 
indirectly, any action designed to or that might reasonably be expected to 
cause or result in stabilization or manipulation of the price of the Common 
Stock to facilitate the sale or resale of the Shares.

               (u)  Each officer and director of the Company who owns shares 
of Common Stock or options to purchase shares of Common Stock that will vest 
within 180 days of the date of this Agreement, each Selling Stockholder and 
each other beneficial owner of 1,000 or more shares of Common Stock and/or 
options to purchase shares of Common Stock that will vest within 180 days of 
the date of this Agreement has agreed in writing that such person will not, 
for a period of 180 days from the date that the Registration Statement is 
declared effective by the Commission (the "Lock-up Period"), offer to sell, 
contract to sell, or otherwise sell, dispose of, loan, pledge or grant any 
rights with respect to (collectively, a "Disposition") any shares of Common 
Stock, any options or warrants to purchase any shares of Common Stock or any 
securities convertible into or exchangeable for shares of Common Stock 
(collectively, "Securities") now owned or hereafter acquired directly by such 
person or with respect to which such person has or hereafter acquires the 
power of disposition, otherwise than (i) as a bona fide gift or gifts, 
PROVIDED the donee or donees thereof agree in writing to be bound by this 
restriction, (ii) as a distribution to partners or stockholders of such 
person, PROVIDED that the distributees thereof agree in writing to be bound 
by the terms of this restriction, or (iii) with the prior written consent of 
BancAmerica Robertson Stephens (which consent has been given with respect to 
the pledge of any shares of Common Stock that were purchased pursuant to the 
Company's "Stock Option Loan Program" described in the Registration Statement 
or any other loan program approved in writing by BancAmerica Robertson 
Stephens).  The foregoing restriction has been expressly agreed to preclude 
the holder of the Securities from engaging in any hedging or other 
transaction which is designed to or reasonably expected to lead to or result 
in a Disposition of Securities during the Lock-up Period, even if such 
Securities would be disposed of by someone other than such holder.  Such 
prohibited hedging or other transactions would include, without limitation, 
any short sale (whether or not against the box) or any purchase, sale or 
grant of any right (including, without limitation, any put or call option) 
with respect to any Securities or with respect to any security (other than a 
broad-based market basket or index) that includes, relates to or derives any 
significant part of its value from Securities.  Such person has also agreed 
and consented to the entry of stop transfer instructions with the Company's 
transfer agent against the transfer of the Securities held by such person 
except in 

                                    7



compliance with this restriction.  Furthermore, each such person has also 
agreed that, without the prior written consent of BancAmerica Robertson 
Stephens, such person will not, during the period ending with the conclusion 
of the Lock-Up Period, make any demand for or exercise any right with respect 
to, the registration of any Securities, except pursuant to the Registration 
Statement to the extent set forth in Schedule B hereto.  The Company has 
provided to counsel for the Underwriters a complete and accurate list of all 
securityholders of the Company and the number and type of securities held by 
each securityholder.  The Company has provided to counsel for the 
Underwriters true, accurate and complete copies of all of the agreements 
pursuant to which its officers (to the extent that they are stockholders of 
the Company), directors (to the extent that they are stockholders of the 
Company) and stockholders have agreed to such or similar restrictions (the 
"Lock-up Agreements") presently in effect or effected hereby. The Company 
hereby represents and warrants that, prior to the conclusion of the Lock-Up 
Period, it will not release any of its officers, directors or other 
stockholders from any Lock-up Agreements currently existing or hereafter 
effected without the prior written consent of BancAmerica Robertson Stephens.

               (v)  Except as set forth in the Registration Statement and 
Prospectus, (i) the Company is in compliance with all rules, laws and 
regulations relating to the use, treatment, storage and disposal of toxic 
substances and protection of health or the environment ("Environmental Laws") 
which are applicable to its business, (ii) the Company has received no notice 
from any governmental authority or third party of an asserted claim under 
Environmental Laws, which claim is required to be disclosed in the 
Registration Statement and the Prospectus, (iii) the Company will not be 
required to make future material capital expenditures to comply with 
Environmental Laws and (iv) no property which is owned, leased or occupied by 
the Company has been designated as a Superfund site pursuant to the 
Comprehensive Response, Compensation, and Liability Act of 1980, as amended 
(42 U.S.C. Section 9601, ET SEQ.), or otherwise designated as a contaminated 
site under applicable state or local law.

               (w)  The Company and the Subsidiary maintain a system of 
internal accounting controls sufficient to provide reasonable assurances that 
(i) transactions are executed in accordance with management's general or 
specific authorizations, (ii) transactions are recorded as necessary to 
permit preparation of financial statements in conformity with generally 
accepted accounting principles and to maintain accountability for assets, 
(iii) access to assets is permitted only in accordance with management's 
general or specific authorization, and (iv) the recorded accountability for 
assets is compared with existing assets at reasonable intervals and 
appropriate action is taken with respect to any differences.

               (x)  There are no outstanding loans, advances (except normal 
advances for business expenses in the ordinary course of business) or 
guarantees of indebtedness by the Company to or for the benefit of any of the 
officers or directors of the Company or any of the members of the families of 
any of them, except as disclosed in the Registration Statement and the 
Prospectus.

               (y)  The Company has not incurred any liability for any 
finder's fees or similar payments in connection with the transactions 
contemplated herein.

               (z)  The Company's products are designed to be in compliance 
with all federal, state and local banking laws and regulation and similar 
laws and regulations of other countries.

               (aa) The Company has complied with all provisions of Section 
517.075, Florida Statutes relating to doing business with the Government of 
Cuba or with any person or affiliate located in Cuba.

               (ab) The Company has given notice of the filing of the 
Registration Statement and the offering contemplated thereby as required by 
the Shareholders Agreements, dated January 29, 1997, by and among the Company 
and certain of its stockholders.
               
               II.  Each Selling Stockholder, severally and not jointly, 
represents and warrants to and agrees with each Underwriter that:

                                     8



               (a)  Such Selling Stockholder on the Closing Date and on any 
later date on which Option Shares are purchased will have valid marketable 
title to the Shares to be sold by such Selling Stockholder under this 
Agreement, free and clear of any pledge, lien, security interest, 
encumbrance, claim or equitable interest other than pursuant to this 
Agreement; and upon delivery of such Shares hereunder and payment of the 
purchase price as herein contemplated, each of the Underwriters will obtain 
valid marketable title to the Shares purchased by it from such Selling 
Stockholder, free and clear of any pledge, lien, security interest pertaining 
to such Selling Stockholder or such Selling Stockholder's property, 
encumbrance, claim or equitable interest, including any liability for estate 
or inheritance taxes, or any liability to or claims of any creditor, devisee, 
legatee or beneficiary of such Selling Stockholder.

               (b)  Such Selling Stockholder has duly authorized (if 
applicable), executed and delivered, in the form heretofore furnished to the 
Representatives, an irrevocable Custody Agreement and Power of Attorney (the 
"Selling Stockholder Agreement") appointing John D. Carreker, Jr., Richard L. 
Linting and Terry L. Gage as attorneys-in-fact (collectively, the "Attorneys" 
and individually, an "Attorney") and a Letter of Transmittal and Custody 
Agreement (the "Custody Agreement") with ChaseMellon Shareholder Services, 
L.L.C., as custodian (the "Custodian"); the Selling Stockholder Agreement of 
each Selling Stockholder constitutes a valid and binding agreement on the 
part of such Selling Stockholder, enforceable in accordance with its terms, 
except as the enforcement thereof may be limited by applicable bankruptcy, 
insolvency, reorganization, moratorium or other similar laws relating to or 
affecting creditors' rights generally or by general equitable principles; and 
each of such Selling Stockholder's Attorneys, acting alone, is authorized to 
execute and deliver this Agreement and the certificate referred to in Section 
6(h) hereof on behalf of such Selling Stockholder, to determine the purchase 
price to be paid by the several Underwriters to such Selling Stockholder as 
provided in Section 3 hereof, to authorize the delivery of the Selling 
Stockholder Shares and the Option Shares to be sold by such Selling 
Stockholder under this Agreement and to duly endorse (in blank or otherwise) 
the certificate or certificates representing such Shares or a stock power or 
powers with respect thereto, to accept payment therefor, and otherwise to act 
on behalf of such Selling Stockholder in connection with this Agreement.

               (c)  All consents, approvals, authorizations and orders 
required for the execution and delivery by such Selling Stockholder of the 
Selling Stockholder Agreement, the execution and delivery by or on behalf of 
such Selling Stockholder of this Agreement and the sale and delivery of the 
Selling Stockholder Shares and the Option Shares to be sold by such Selling 
Stockholder under this Agreement (other than, at the time of the execution 
hereof (if the Registration Statement has not yet been declared effective by 
the Commission), the issuance of the order of the Commission declaring the 
Registration Statement effective and such consents, approvals, authorizations 
or orders as may be necessary under state or other securities or Blue Sky 
laws or under the rules and regulations of the National Association of 
Securities Dealers, Inc. (the "NASD")) have been obtained and are in full 
force and effect; such Selling Stockholder, if other than a natural person, 
has been duly organized and is validly existing in good standing under the 
laws of the jurisdiction of its organization as the type of entity that it 
purports to be; and such Selling Stockholder has full legal right, power and 
authority to enter into and perform its obligations under this Agreement and 
such Selling Stockholder Agreement, and to sell, assign, transfer and deliver 
the Shares to be sold by such Selling Stockholder under this Agreement.

               (d)  Such Selling Stockholder will not, during the Lock-up 
Period, effect the Disposition of any Securities now owned or hereafter 
acquired directly by such Selling Stockholder or with respect to which such 
Selling Stockholder has or hereafter acquires the power of disposition, 
otherwise than (i) as a bona fide gift or gifts, PROVIDED the donee or donees 
thereof agree in writing to be bound by this restriction, (ii) as a 
distribution to partners or stockholders of such Selling Stockholder, 
PROVIDED that the distributees thereof agree in writing to be bound by the 
terms of this restriction, or (iii) with the prior written consent of 
BancAmerica Robertson Stephens (which consent has been given with respect to 
the pledge of any shares of Common Stock that were purchased by such Selling 
Stockholder pursuant to the Company's "Stock Option Loan Program" described 
in the Registration Statement or any other loan program approved in writing 
by BancAmerica Robertson Stephens).  The foregoing restriction is expressly 
agreed to preclude the holder of the Securities from engaging in any hedging 
or other transaction which is designed to or reasonably expected to lead to 
or result in a Disposition of Securities during the Lock-up Period, even if 
such Securities would be disposed of by someone other than the Selling 
Stockholder.  Such prohibited hedging or other transactions 

                                    9



would including, without limitation, any short sale (whether or not against 
the box) or any purchase, sale or grant of any right (including, without 
limitation, any put or call option) with respect to any Securities or with 
respect to any security (other than a broad-based market basket or index) 
that includes, relates to or derives any significant part of its value from 
Securities.  Such Selling Stockholder also agrees and consents to the entry 
of stop transfer instructions with the Company's transfer agent against the 
transfer of the securities held by such Selling Stockholder except in 
compliance with this restriction.  Furthermore, such Selling Stockholder also 
agrees that, without the prior written consent of BancAmerica Robertson 
Stephens, such Selling Stockholder will not, during the period ending with 
the conclusion of the Lock-Up Period, make any demand for or exercise any 
right with respect to, the registration of any Securities, except pursuant to 
the Registration Statement to the extent set forth in Schedule B hereto.

               (e)  Certificates in negotiable form for all Shares to be sold 
by such Selling Stockholder under this Agreement, together with a stock power 
or powers duly endorsed in blank by such Selling Stockholder, have been 
placed in custody with the Custodian for the purpose of effecting delivery 
hereunder, except for the Selling Stockholder Shares to be sold by Wyn P. 
Lewis which certificates and stock power will be delivered by Mr. Lewis or on 
his behalf to the Underwriters at the time of the Closing.

               (f)  This Agreement has been duly authorized by each Selling 
Stockholder that is not a natural person and has been duly executed and 
delivered by or on behalf of such Selling Stockholder and is a valid and 
binding agreement of such Selling Stockholder, enforceable in accordance with 
its terms, except as rights to indemnification or contribution hereunder may 
be limited by applicable law or public policy and except as the enforcement 
hereof may be limited by bankruptcy, insolvency, reorganization, moratorium 
or other similar laws relating to or affecting creditors' rights generally or 
by general equitable principles; and the performance of this Agreement and 
the consummation of the transactions herein contemplated will not (i) result 
in a material breach or violation of any of the terms and provisions of or 
constitute a default under any bond, debenture, note or other evidence of 
indebtedness, or under any lease, contract, indenture, mortgage, deed of 
trust, loan agreement, joint venture or other agreement or instrument to 
which such Selling Stockholder is a party or by which such Selling 
Stockholder, or any Shares to be sold by such Selling Stockholder hereunder, 
may be bound or, (ii) to the best of such Selling Stockholders' knowledge, 
result in any violation of any law, order, rule, regulation, writ, 
injunction, judgment or decree of any court, government or governmental 
agency or body, domestic or foreign, having jurisdiction over such Selling 
Stockholder or over the properties of such Selling Stockholder, or (iii) if 
such Selling Stockholder is other than a natural person, result in any 
violation of any provisions of the charter, bylaws or other organizational 
documents of such Selling Stockholder.

               (g)  Such Selling Stockholder has not taken and will not take, 
directly or indirectly, any action designed to or that might reasonably be 
expected to cause or result in stabilization or manipulation of the price of 
the Common Stock to facilitate the sale or resale of the Shares.

               (h)  Such Selling Stockholder has not distributed and will not 
distribute any prospectus or other offering material in connection with the 
offering and sale of the Shares.

               (i)  All information furnished by or on behalf of such Selling 
Stockholder relating to such Selling Stockholder, in his or its capacity as 
such, and the Selling Stockholder Shares that is contained in the 
representations and warranties of such Selling Stockholder in such Selling 
Stockholder's Selling Stockholder Agreement or set forth in the Registration 
Statement or the Prospectus is, and at the time the Registration Statement 
became or becomes, as the case may be, effective and at all times subsequent 
thereto up to and on the Closing Date, and on any later date on which Option 
Shares are to be purchased, was or will be, true, correct and complete in all 
material respects, and does not, and at the time the Registration Statement 
became or becomes, as the case may be, effective and at all times subsequent 
thereto up to and on the Closing Date, and on any later date on which Option 
Shares of such Selling Stockholder are to be purchased, will not, contain any 
untrue statement of a material fact or omit to state a material fact required 
to be stated therein or necessary to make such information not misleading.

                                     10



               (j)  Such Selling Stockholder (other than Lawrence D. 
Duckworth) will review the Prospectus and such Selling Stockholder will 
comply with all agreements and satisfy all conditions on his or its part to 
be complied with or satisfied pursuant to this Agreement on or prior to the 
Closing Date, or any later date on which Option Shares of such Selling 
Stockholder are to be purchased, as the case may be, and will advise one of 
its Attorneys and BancAmerica Robertson Stephens prior to the Closing Date or 
such later date on which Option Shares are to be purchased, as the case may 
be, if any statement to be made on behalf of such Selling Stockholder in the 
certificate contemplated by Section 6(h) would be inaccurate if made as of 
the Closing Date or such later date on which Option Shares of such Selling 
Stockholder are to be purchased, as the case may be.

               (k)  Such Selling Stockholder does not have, or has waived 
prior to the date hereof, any preemptive right, co-sale right or right of 
first refusal or other similar right to purchase any of the Shares that are 
to be sold by the Company or any of the other Selling Stockholders to the 
Underwriters pursuant to this Agreement; such Selling Stockholder does not 
have, or has waived prior to the date hereof, any registration right or other 
similar right to participate in the offering made by the Prospectus, other 
than such rights of participation as have been satisfied by the participation 
of such Selling Stockholder in the transactions to which this Agreement 
relates in accordance with the terms of this Agreement; and such Selling 
Stockholder does not own any warrants, options or similar rights to acquire, 
and does not have any right or arrangement to acquire, any capital stock, 
rights, warrants, options or other securities from the Company, other than 
those referred to in the Registration Statement and the Prospectus.

               (l)  Except as disclosed to the Underwriters in writing, such 
Selling Stockholder is not directly or indirectly an affiliate of or 
associate with any member of the NASD.

               (m)  In addition to the other representations and warranties 
set forth in this Section 2.II, each of John D. Carreker, Jr. and Ronald R. 
Antinori, severally and not jointly, further represents and warrants that, to 
the best of their respective knowledge, the representations and warranties of 
the Company set forth in Section 2.I of this Agreement are true and correct 
in all material respects. 

               (n)  In addition to the other representations and warranties 
set forth in this Section 2.II, each of Wyn P. Lewis, Royce D. Brown 
[and SAIC], severally and not jointly, further represents and warrants that, 
to their respective knowledge, each Preliminary Prospectus, as of its date, 
has not included any untrue statement of a material fact or omitted to state 
a material fact necessary to make the statements therein, in the light of the 
circumstances under which they were made, not misleading; and at the time the 
Registration Statement became or becomes, as the case may be, effective and 
at all times subsequent thereto up to and on the Closing Date and on any 
later date on which Option Shares are to be purchased, the Registration 
Statement, and any amendments or supplements thereto, did not and will not 
include any untrue statement of a material fact or omit to state a material 
fact required to be stated therein or necessary to make the statements 
therein not misleading, and the Prospectus, and any amendments or supplements 
thereto, did not and will not include any untrue statement of a material fact 
or omit to state a material fact necessary to make the statements therein, in 
the light of the circumstances under which they were made, not misleading; 
PROVIDED, HOWEVER, that none of the representations and warranties contained 
in this subparagraph (n) shall apply to information contained in or omitted 
from the Registration Statement or Prospectus, or any amendment or supplement 
thereto, in reliance upon, and in conformity with, written information 
furnished to the Company by such Underwriter specifically for use in the 
preparation thereof. 

          3.   PURCHASE, SALE AND DELIVERY OF SHARES.  On the basis of the 
representations, warranties and agreements herein contained, but subject to 
the terms and conditions herein set forth, the Company and the Selling 
Stockholders agree, severally and not jointly, to sell to the Underwriters, 
and each Underwriter agrees, severally and not jointly, to purchase from the 
Company and the Selling Stockholders, respectively, at a purchase price of 
$__.__ per share, the respective number of Company Shares as hereinafter set 
forth and Selling Stockholder Shares set forth opposite the names of the 
Company and the Selling Stockholders in Schedule B hereto.  The obligation of 
each Underwriter to the Company and to each Selling Stockholder shall be to 
purchase from the Company or such Selling Stockholder that number of Company 
Shares or Selling Stockholder Shares, as the case may be, which (as nearly as 
practicable, as 

                                  11



determined by you) is in the same proportion to the number of Company Shares 
or Selling Stockholder Shares, as the case may be, set forth opposite the 
name of the Company or such Selling Stockholder in Schedule B hereto as the 
number of Firm Shares which is set forth opposite the name of such 
Underwriter in Schedule A hereto (subject to adjustment as provided in 
Section 10) is to the total number of Firm Shares to be purchased by all the 
Underwriters under this Agreement.

               The certificates in negotiable form for the Selling 
Stockholder Shares have been placed in custody (for delivery under this 
Agreement) under the Selling Stockholder Agreement, except for the Selling 
Stockholder Shares to be sold by Wyn P. Lewis which certificates, together 
with duly endorsed stock powers, will be delivered by Mr. Lewis or on his 
behalf to the Underwriters at the time of the Closing.  Each Selling 
Stockholder agrees that the certificates for the Selling Stockholder Shares 
of such Selling Stockholder are subject to the interests of the Underwriters 
hereunder, that the arrangements made by such Selling Stockholder for the 
custody of the Selling Stockholder Shares, including the Selling Stockholder 
Agreement, is to that extent irrevocable and that the obligations of such 
Selling Stockholder hereunder shall not be terminated by the act of such 
Selling Stockholder or by operation of law, whether by the death or 
incapacity of such Selling Stockholder or the occurrence of any other event, 
except as specifically provided herein or in the Selling Stockholder 
Agreement. If any Selling Stockholder should die or be incapacitated, or if 
any other such event should occur, before the delivery of the certificates 
for the Selling Stockholder Shares hereunder, the Selling Stockholder Shares 
to be sold by such Selling Stockholder shall, except as specifically provided 
herein or in the Selling Stockholder Agreement, be delivered by the Custodian 
in accordance with the terms and conditions of this Agreement as if such 
death, incapacity or other event had not occurred, regardless of whether the 
Custodian shall have received notice of such death or other event.

               Delivery of definitive certificates for the Firm Shares to be 
purchased by the Underwriters pursuant to this Section 3 shall be made 
against payment of the purchase price therefor by the several Underwriters by 
certified or official bank check or checks drawn in same-day funds or by wire 
transfer in same-day funds, payable to the order of the Company with regard 
to the Shares being purchased from the Company, and to the order of the 
Custodian for the respective accounts of the Selling Stockholders with regard 
to the Shares being purchased from such Selling Stockholders, at the offices 
of Locke Purnell Rain Harrell, 2200 Ross Avenue, Suite 2200, Dallas, Texas 
(or at such other place as may be agreed upon among the Representatives and 
the Company), at 7:00 A.M., San Francisco time (a) on the third (3rd) full 
business day following the first day that Shares are traded, (b) if this 
Agreement is executed and delivered after 1:30 P.M., San Francisco time, the 
fourth (4th) full business day following the day that this Agreement is 
executed and delivered or (c) at such other time and date not later than 
seven (7) full business days following the first day that Shares are traded 
as the Representatives and the Company may determine (or at such time and 
date to which payment and delivery shall have been postponed pursuant to 
Section 10 hereof), such time and date of payment and delivery being herein 
called the "Closing Date"; PROVIDED, HOWEVER, that if the Company has not 
made available to the Representatives copies of the Prospectus within the 
time provided in Section 4(d) hereof (through no fault of the 
Representatives), the Representatives may, in their sole discretion, postpone 
the Closing Date until no later than two (2) full business days following 
delivery of copies of the Prospectus to the Representatives.  The 
certificates for the Firm Shares to be so delivered will be made available to 
you at such office or such other location including, without limitation, in 
New York City, as you may reasonably request for checking at least one (1) 
full business day prior to the Closing Date and will be in such names and 
denominations as you may request, such request to be made at least two (2) 
full business days prior to the Closing Date.  If the Representatives so 
elect, delivery of the Firm Shares may be made by credit through full fast 
transfer to the accounts at The Depository Trust Company designated by the 
Representatives.

               It is understood that you, individually, and not as the 
Representatives of the several Underwriters, may (but shall not be obligated 
to) make payment of the purchase price on behalf of any Underwriter or 
Underwriters whose check or checks shall not have been received by you prior 
to the Closing Date for the Firm Shares to be purchased by such Underwriter 
or Underwriters. Any such payment by you shall not relieve any such 
Underwriter or Underwriters of any of its or their obligations hereunder.

                                    12



               After the Registration Statement becomes effective, the several
Underwriters intend to make an initial public offering (as such term is
described in Section 11 hereof) of the Firm Shares at an initial public offering
price of $__.__ per share.  After the initial public offering, the several
Underwriters may, in their discretion, vary the public offering price.

               The information set forth in the last paragraph on the front 
cover page (insofar as such information relates to the Underwriters), on the 
inside front cover concerning stabilization and over-allotment by the 
Underwriters, and under the second, seventh, eighth and ninth paragraphs 
under the caption "Underwriting" in any Preliminary Prospectus and in the 
Prospectus constitutes the only information furnished by the Underwriters to 
the Company for inclusion in any Preliminary Prospectus, the Prospectus or 
the Registration Statement, and you, on behalf of the respective 
Underwriters, represent and warrant to the Company and the Selling 
Stockholders that the statements made therein do not include any untrue 
statement of a material fact or omit to state a material fact required to be 
stated therein or necessary to make the statements therein, in the light of 
the circumstances under which they were made, not misleading.

          4.   FURTHER AGREEMENTS OF THE COMPANY.  The Company agrees with the
several Underwriters that:

               (a)  The Company will use its best efforts to cause the 
Registration Statement and any amendment thereof, if not effective at the 
time and date that this Agreement is executed and delivered by the parties 
hereto, to become effective as promptly as possible; the Company will use its 
best efforts to cause any abbreviated registration statement pursuant to Rule 
462(b) of the Rules and Regulations as may be required subsequent to the date 
the Registration Statement is declared effective to become effective as 
promptly as possible; the Company will notify you, promptly after it shall 
receive notice thereof, of the time when the Registration Statement, any 
subsequent amendment to the Registration Statement or any abbreviated 
registration statement has become effective or any supplement to the 
Prospectus has been filed; if the Company omitted information from the 
Registration Statement at the time it was originally declared effective in 
reliance upon Rule 430A(a) of the Rules and Regulations, the Company will 
provide evidence satisfactory to you that the Prospectus contains such 
information and has been filed, within the time period prescribed, with the 
Commission pursuant to subparagraph (1) or (4) of Rule 424(b) of the Rules 
and Regulations or as part of a post-effective amendment to such Registration 
Statement as originally declared effective which is declared effective by the 
Commission; if the Company files a term sheet pursuant to Rule 434 of the 
Rules and Regulations, the Company will provide evidence satisfactory to you 
that the Prospectus and term sheet meeting the requirements of Rule 434(b) or 
(c), as applicable, of the Rules and Regulations, have been filed, within the 
time period prescribed, with the Commission pursuant to subparagraph (7) of 
Rule 424(b) of the Rules and Regulations; if for any reason the filing of the 
final form of Prospectus is required under Rule 424(b)(3) of the Rules and 
Regulations, it will provide evidence satisfactory to you that the Prospectus 
contains such information and has been filed with the Commission within the 
time period prescribed; it will notify you promptly of any request by the 
Commission for the amending or supplementing of the Registration Statement or 
the Prospectus or for additional information; promptly upon your request, it 
will prepare and file with the Commission any amendments or supplements to 
the Registration Statement or Prospectus which, in the opinion of counsel for 
the several Underwriters ("Underwriters' Counsel"), may be necessary or 
advisable in connection with the distribution of the Shares by the 
Underwriters; it will promptly prepare and file with the Commission, and 
promptly notify you of the filing of, any amendments or supplements to the 
Registration Statement or Prospectus which may be necessary to correct any 
statements or omissions, if, at any time when a prospectus relating to the 
Shares is required to be delivered under the Act, any event shall have 
occurred as a result of which the Prospectus or any other prospectus relating 
to the Shares as then in effect would include any untrue statement of a 
material fact or omit to state a material fact necessary to make the 
statements therein, in the light of the circumstances under which they were 
made, not misleading; in case any Underwriter is required to deliver a 
prospectus nine (9) months or more after the effective date of the 
Registration Statement in connection with the sale of the Shares, it will 
prepare promptly upon request, but at the expense of such Underwriter, such 
amendment or amendments to the Registration Statement and such prospectus or 
prospectuses as may be necessary to permit compliance with the requirements 
of Section 10(a)(3) of the Act; and it will file no amendment or supplement 
to the Registration Statement or Prospectus, or, prior to the end of the 
period of time in which a prospectus relating to the Shares is required to be 
delivered under the Act, which shall not

                                      13


previously have been submitted to you a reasonable time prior to the proposed 
filing thereof or to which you shall reasonably object in writing, subject, 
however, to compliance with the Act and the Rules and Regulations and the 
provisions of this Agreement.

               (b)  The Company will advise you, promptly after it shall 
receive notice or obtain knowledge, of the issuance of any stop order by the 
Commission suspending the effectiveness of the Registration Statement or of 
the initiation or threat of any proceeding for that purpose; and it will 
promptly use its best efforts to prevent the issuance of any stop order or to 
obtain its withdrawal at the earliest possible moment if such stop order 
should be issued.

               (c)  The Company will use its best efforts to qualify the 
Shares for offering and sale under the securities laws of such jurisdictions 
as you may designate and to continue such qualifications in effect for so 
long as may be required for purposes of the distribution of the Shares, 
except that the Company shall not be required in connection therewith or as a 
condition thereof to qualify as a foreign corporation or to execute a general 
consent to service of process in any jurisdiction in which it is not 
otherwise required to be so qualified or to so execute a general consent to 
service of process.  In each jurisdiction in which the Shares shall have been 
qualified as above provided, the Company will make and file such statements 
and reports in each year as are or may be required by the laws of such 
jurisdiction.

               (d)  The Company will furnish to you, as soon as available, 
and, in the case of the Prospectus and any term sheet or abbreviated term 
sheet under Rule 434, in no event later than the first (1st) full business 
day following the first day that Shares are traded, copies of the 
Registration Statement (three of which will be signed and which will include 
all exhibits), each Preliminary Prospectus, the Prospectus and any amendments 
or supplements to such documents, including any prospectus prepared to permit 
compliance with Section 10(a)(3) of the Act, all in such quantities as you 
may from time to time reasonably request. Notwithstanding the foregoing, if 
BancAmerica Robertson Stephens, on behalf of the several Underwriters, shall 
agree to the utilization of Rule 434 of the Rules and Regulations, the 
Company shall provide to you copies of a Preliminary Prospectus updated in 
all respects through the date specified by you in such quantities as you may 
from time to time reasonably request.

               (e)  The Company will make generally available to its 
securityholders as soon as practicable, but in any event not later than the 
forty-fifth (45th) day following the end of the fiscal quarter first 
occurring after the first anniversary of the effective date of the 
Registration Statement, an earnings statement (which will be in reasonable 
detail but need not be audited) complying with the provisions of Section 
11(a) of the Act and covering a twelve (12) month period beginning after the 
effective date of the Registration Statement.

               (f)  During a period of three (3) years after the date hereof, 
the Company will furnish to its stockholders as soon as practicable after the 
end of each respective period, annual reports (including financial statements 
audited by independent certified public accountants) within one hundred 
twenty (120) days after the end of each fiscal year and will make available 
unaudited quarterly reports of operations for each of the first three 
quarters of the fiscal year within sixty (60) days after the end of each 
fiscal quarter, and will furnish to you and the other several Underwriters 
hereunder, upon request (i) concurrently with furnishing such reports to its 
stockholders, statements of operations of the Company for each of the first 
three (3) quarters in the form furnished to the Company's stockholders, (ii) 
concurrently with furnishing to its stockholders, a balance sheet of the 
Company as of the end of such fiscal year, together with statements of 
operations, of stockholders' equity, and of cash flows of the Company for 
such fiscal year, accompanied by a copy of the certificate or report thereon 
of independent certified public accountants, (iii) as soon as they are 
available, copies of all reports (financial or other) mailed to stockholders, 
(iv) as soon as they are available, copies of all reports and financial 
statements furnished to or filed with the Commission, any securities exchange 
or the NASD, and (v) every material press release and every material news 
item or article in respect of the Company or its affairs which was generally 
released to stockholders.  During such three (3) year period, if the Company 
shall have active subsidiaries, the foregoing financial statements shall be 
on a consolidated basis to the extent that the accounts of the Company and 
such subsidiaries are consolidated, and shall be accompanied by similar 
financial statements for any significant subsidiary which is not so 
consolidated.

                                      14


               (g)  The Company will apply the net proceeds from the sale of the
Shares being sold by it in the manner set forth under the caption "Use of
Proceeds" in the Prospectus.

               (h)  The Company will maintain a transfer agent and, if necessary
under the jurisdiction of incorporation of the Company, a registrar (which may
be the same entity as the transfer agent) for its Common Stock.

               (i)  If at any time during the ninety (90) day period after 
the Registration Statement becomes effective, any rumor, publication or event 
relating to or affecting the Company shall occur as a result of which in your 
opinion the market price of the Common Stock has been or is likely to be 
materially affected (regardless of whether such rumor, publication or event 
necessitates a supplement to or amendment of the Prospectus), the Company 
will, after written notice from you advising the Company to the effect set 
forth above, forthwith consult with you concerning the substance of and 
advisability of disseminating a press release or other public statement 
responding to or commenting on such rumor, publication or event.

               (j)  For a period of twenty-five (25) days following the date 
the Registration Statement is declared effective by the Commission, the 
Company will not issue any press release or engage in any other publicity 
without the Representatives' prior written consent, other than normal 
customary releases issued in the ordinary course of the Company's business or 
those releases required by law.

               (k)  During the Lock-up Period, the Company will not, without 
the prior written consent of BancAmerica Robertson Stephens, effect the 
Disposition of, directly or indirectly, any Securities other than the sale of 
the Company Shares and the Option Shares to be sold by the Company hereunder 
and the Company's issuance of options or Common Stock under the Company's 
presently authorized 1994 Long Term Incentive Plan, the Company's Director 
Stock Option Plan or pursuant to certain options granted to non-employee 
directors of the Company (collectively, the "Option Arrangements").

               (l)  During a period of ninety (90) days from the effective 
date of the Registration Statement, the Company will not file a registration 
statement registering shares under the Option Plan or other employee benefit 
plan.

               (n)  The Company will conduct its affairs in such a manner to 
ensure that the Company will not be an "investment company" or a company 
"controlled" by an "investment company" within the meaning of the Investment 
Company Act.

          5.   EXPENSES.

               (a)  The Company and the Selling Stockholders agree with each 
Underwriter that the Company and the Selling Stockholders will pay and bear 
all costs and expenses in connection with the preparation, printing and 
filing of the Registration Statement (including financial statements, 
schedules and exhibits), Preliminary Prospectuses and the Prospectus and any 
amendments or supplements thereto; the printing of this Agreement, the 
Agreement Among Underwriters, the Selected Dealer Agreement, the Preliminary 
Blue Sky Survey and any Supplemental Blue Sky Survey, the Underwriters' 
Questionnaire and Power of Attorney, and any instruments related to any of 
the foregoing; the issuance and delivery of the Shares hereunder to the 
several Underwriters, including transfer taxes, if any; the cost of all 
certificates representing the Shares and transfer agents' and registrars' 
fees; the fees and disbursements of counsel for the Company; all fees and 
other charges of the Company's independent certified public accountants; the 
cost of furnishing to the several Underwriters copies of the Registration 
Statement (including appropriate exhibits), Preliminary Prospectus and the 
Prospectus, and any amendments or supplements to any of the foregoing; NASD 
filing fees and the cost of qualifying the Shares under the laws of such 
jurisdictions as you may designate (including filing fees and fees and 
disbursements of Underwriters' Counsel in connection with such NASD filings 
and Blue Sky qualifications); and all other expenses directly incurred by the 
Company and the Selling Stockholders in connection with the performance of 
their obligations hereunder.  Any additional expenses incurred as a result of 
the sale of the Shares by the Selling

                                      15


Stockholders will be borne collectively by the Company and the Selling 
Stockholders or as otherwise may be mutually agreed to by them, but shall not 
be, in any event, borne by the Underwriters.  The provisions of this Section 
5(a) are intended to relieve the Underwriters from the payment of the 
expenses and costs which the Selling Stockholders and the Company hereby 
agree to pay, but shall not affect any agreement which the Selling 
Stockholders and the Company may make, or may have made, for the sharing of 
any of such expenses and costs.  Such agreements shall not impair the 
obligations of the Company and the Selling Stockholders hereunder to the 
several Underwriters.

               (b)  If the transactions contemplated hereby are not 
consummated by reason of any failure, refusal or inability on the part of the 
Company or any Selling Stockholder to perform any agreement on their 
respective parts to be performed hereunder or to fulfill any condition of the 
Underwriters' obligations hereunder, or if the Company shall terminate this 
Agreement pursuant to Section 11(a) hereof, or if the Underwriters shall 
terminate this Agreement pursuant to Section 11(b)(i), the Company will 
reimburse the several Underwriters for all out-of-pocket expenses (including 
fees and disbursements of Underwriters' Counsel) incurred by the Underwriters 
in investigating or preparing to market or marketing the Shares.  Subject to 
the provisions of Section 8, the Underwriters agree to pay, whether or not 
the transactions contemplated hereby are consummated or this Agreement is 
terminated, all costs and expenses incident to the performance of the 
obligations of the Underwriters under this Agreement that are not payable by 
the Company or the Selling Stockholders pursuant to Section 5(a) above or the 
first sentence of this Section 5(b), including, without limitation, the fees 
and disbursements of counsel for the Underwriters. 

               (c)  In addition to its other obligations under Section 8(a) 
hereof, the Company agrees that, as an interim measure during the pendency of 
any claim, action, investigation, inquiry or other proceeding described in 
Section 8(a) hereof, it will reimburse the Underwriters on a monthly basis 
for all reasonable legal or other expenses incurred in connection with 
investigating or defending any such claim, action, investigation, inquiry or 
other proceeding, notwithstanding the absence of a judicial determination as 
to the propriety and enforceability of the Company's obligation to reimburse 
the Underwriters for such expenses and the possibility that such payments 
might later be held to have been improper by a court of competent 
jurisdiction.  To the extent that any such interim reimbursement payment is 
so held to have been improper, the Underwriters shall promptly return such 
payment to the Company together with interest, compounded daily, determined 
on the basis of the prime rate (or other commercial lending rate for 
borrowers of the highest credit standing) listed from time to time in The 
Wall Street Journal which represents the base rate on corporate loans posted 
by a substantial majority of the nation's thirty (30) largest banks (the 
"Prime Rate").  Any such interim reimbursement payments which are not made to 
the Underwriters within thirty (30) days of a request for reimbursement shall 
bear interest at the Prime Rate from the date of such request.

               (d)  In addition to their other obligations under Section 8(b) 
hereof, each Selling Stockholder agrees that, as an interim measure during 
the pendency of any claim, action, investigation, inquiry or other proceeding 
described in Section 8(b) hereof relating to such Selling Stockholder, it 
will reimburse the Underwriters on a monthly basis for all reasonable legal 
or other expenses incurred in connection with investigating or defending any 
such claim, action, investigation, inquiry or other proceeding, 
notwithstanding the absence of a judicial determination as to the propriety 
and enforceability of such Selling Stockholder's obligation to reimburse the 
Underwriters for such expenses and the possibility that such payments might 
later be held to have been improper by a court of competent jurisdiction; 
PROVIDED, that if such claim, action, investigation or other proceeding is 
within the purview of Section 8(a) hereof, the Underwriters shall first 
demand interim reimbursement from the Company pursuant to Section 5(c) 
hereof, and shall have failed to be so reimbursed in full within thirty (30) 
days of such demand, prior to invoking its rights against such Selling 
Stockholder pursuant to this Section 5(d).  To the extent that any such 
interim reimbursement payment is so held to have been improper, the 
Underwriters shall promptly return such payment to the Selling Stockholders, 
together with interest, compounded daily, determined on the basis of the 
Prime Rate.  Any such interim reimbursement payments which are not made to 
the Underwriters within thirty (30) days of a request for reimbursement shall 
bear interest at the Prime Rate from the date of such request.

               (e)  In addition to their other obligations under Section 8(c) 
hereof, the Underwriters severally and not jointly agree that, as an interim 
measure during the pendency of any claim, action, investigation, inquiry or 
other

                                      16


proceeding described in Section 8(c) hereof, they will reimburse the Company 
and each Selling Stockholder on a monthly basis for all reasonable legal or 
other expenses incurred in connection with investigating or defending any 
such claim, action, investigation, inquiry or other proceeding, 
notwithstanding the absence of a judicial determination as to the propriety 
and enforceability of the Underwriters' obligation to reimburse the Company 
and each such Selling Stockholder for such expenses and the possibility that 
such payments might later be held to have been improper by a court of 
competent jurisdiction.  To the extent that any such interim reimbursement 
payment is so held to have been improper, the Company and each such Selling 
Stockholder shall promptly return such payment to the Underwriters together 
with interest, compounded daily, determined on the basis of the Prime Rate.  
Any such interim reimbursement payments which are not made to the Company and 
each such Selling Stockholder within thirty (30) days of a request for 
reimbursement shall bear interest at the Prime Rate from the date of such 
request.

               (f)  It is agreed that any controversy arising out of the 
operation of the interim reimbursement arrangements set forth in Sections 
5(c), 5(d) and 5(e) hereof, including the amounts of any requested 
reimbursement payments, the method of determining such amounts and the basis 
on which such amounts shall be apportioned among the reimbursing parties, 
shall be settled by arbitration conducted under the provisions of the 
Constitution and Rules of the Board of Governors of the New York Stock 
Exchange, Inc. or pursuant to the Code of Arbitration Procedure of the NASD.  
Any such arbitration must be commenced by service of a written demand for 
arbitration or a written notice of intention to arbitrate, therein electing 
the arbitration tribunal.  In the event the party demanding arbitration does 
not make such designation of an arbitration tribunal in such demand or 
notice, then the party responding to said demand or notice is authorized to 
do so.  Any such arbitration will be limited to the operation of the interim 
reimbursement provisions contained in Sections 5(c), 5(d) and 5(e) hereof and 
will not resolve the ultimate propriety or enforceability of the obligation 
to indemnify for expenses which is created by the provisions of Sections 
8(a), 8(b) and 8(c) hereof or the obligation to contribute to expenses which 
is created by the provisions of Section 8(e) hereof.

          6.   CONDITIONS OF UNDERWRITERS' OBLIGATIONS.  The obligations of 
the several Underwriters to purchase and pay for the Shares as provided 
herein shall be subject to the accuracy, as of the date hereof and the 
Closing Date and any later date on which Option Shares are to be purchased, 
as the case may be, of the representations and warranties of the Company and 
the Selling Stockholders herein, to the performance by the Company and the 
Selling Stockholders of their respective obligations hereunder and to the 
following additional conditions:

               (a)  The Registration Statement shall have become effective 
not later than 2:00 P.M., San Francisco time, on the date following the date 
of this Agreement, or such later date as shall be consented to in writing by 
you; and no stop order suspending the effectiveness thereof shall have been 
issued and no proceedings for that purpose shall have been initiated or, to 
the knowledge of the Company, any Selling Stockholder or any Underwriter, 
threatened by the Commission, and any request of the Commission for 
additional information (to be included in the Registration Statement or the 
Prospectus or otherwise) shall have been complied with to the satisfaction of 
Underwriters' Counsel.

               (b)  All corporate proceedings and other legal matters in 
connection with this Agreement, the form of Registration Statement and the 
Prospectus, and the registration, authorization, issue, sale and delivery of 
the Shares, shall have been reasonably satisfactory to Underwriters' Counsel, 
and such counsel shall have been furnished with such papers and information 
as they may reasonably have requested to enable them to pass upon the matters 
referred to in this Section.

               (c)  Subsequent to the execution and delivery of this 
Agreement and prior to the Closing Date, or any later date on which Option 
Shares are to be purchased, as the case may be, there shall not have been any 
change in the condition (financial or otherwise), earnings, operations, 
business or business prospects of the Company and the Subsidiary, considered 
as one enterprise, from that set forth in the Registration Statement or 
Prospectus, which, in your reasonable judgment, is material and adverse and 
that makes it, in your reasonable judgment, impracticable or inadvisable to 
proceed with the public offering of the Shares as contemplated by the 
Prospectus.

                                      17


               (d)  You shall have received on the Closing Date and on any 
later date on which Option Shares that are Company Shares are to be 
purchased, as the case may be, the following opinion of respective counsel 
for the Company and the Selling Stockholders, dated the Closing Date or such 
later date on which Option Shares are to be purchased addressed to the 
Underwriters and with reproduced copies or signed counterparts thereof for 
each of the Underwriters, to the effect that:

                    (i)       Each of the Company and the Subsidiary, which 
               is the only "significant subsidiary" of the Company (as 
               defined in Regulation S-X of the Act), has been duly 
               incorporated and is validly existing as a corporation in good 
               standing under the laws of the jurisdiction of its 
               incorporation;

                    (ii)      Each of the Company and the Subsidiary has the 
               corporate power and authority to own, lease and operate its 
               respective properties and to conduct its business as described 
               in the Prospectus;

                    (iii)     The Company is duly qualified to do business as 
               a foreign corporation and is in good standing in the State of 
               Texas, and based solely upon an examination of an officer's 
               certificate (which such firm shall state that it believes it 
               is justified in relying upon) and certificates of governmental 
               authorities, each of the Company and the Subsidiary is duly 
               qualified to do business as a foreign corporation and is in 
               good standing in each jurisdiction in which the ownership or 
               leasing of its properties or the conduct of its business 
               requires such qualification, except where the failure to be so 
               qualified or be in good standing would not have a material 
               adverse effect on the condition (financial or otherwise), 
               earnings, operations or business of the Company and the 
               Subsidiary, considered as one enterprise.  To such counsel's 
               knowledge, the Company does not own or have any ownership 
               interest in, directly or indirectly, any corporation, 
               association or other entity other than the Subsidiary and 
               INFITEQ, LLC;

                    (iv)      All issued and outstanding shares of capital 
               stock of the Subsidiary have been duly authorized and validly 
               issued and are fully paid and nonassessable, and to such 
               counsel's knowledge, have not been issued in violation of or 
               subject to any preemptive right, co-sale right, registration 
               right, right of first refusal or other similar right and are 
               owned by the Company free and clear of any pledge, lien, 
               security interest, encumbrance, claim or equitable interest;

                    (v)       The authorized, issued and outstanding capital 
               stock of the Company is as set forth in the Prospectus under 
               the caption "Capitalization" as of the dates stated therein, 
               and the issued and outstanding shares of capital stock of the 
               Company (including the Selling Stockholder Shares) have been 
               duly and validly issued, are nonassessable and, to such 
               counsel's knowledge, are fully paid;

                    (vi)      The Firm Shares or the Option Shares, as the 
               case may be, to be issued by the Company pursuant to the terms 
               of this Agreement have been duly authorized and, upon issuance 
               and delivery against payment therefor in accordance with the 
               terms hereof, will be duly and validly issued and fully paid 
               and nonassessable, and will not have been issued in violation 
               of or subject to any preemptive right, co-sale right, 
               registration right, right of first refusal or other similar 
               right;

                    (vii)     The Company has the corporate power and 
               authority to enter into this Agreement and to issue, sell and 
               deliver to the Underwriters the Shares to be issued and sold 
               by it hereunder;

                    (viii)    This Agreement has been duly authorized by all 
               necessary corporate action on the part of the Company and has 
               been duly executed and delivered by the Company and, assuming 
               due authorization, execution and delivery by you, is a valid 
               and binding agreement of the Company, enforceable in 
               accordance with its terms, except that no opinion need be 
               expressed as to indemnification or contribution provisions and 
               except as enforceability may be limited by bankruptcy, 

                                      18


               insolvency, reorganization, moratorium or similar laws 
               relating to or affecting creditors' rights generally or by 
               general equitable principles;

                    (ix)      The Registration Statement has been duly 
               authorized and executed by the Company and the filing of such 
               document with the Commission has been duly authorized by the 
               Company;

                    (x)       Based upon the oral advice of the Commission, 
               the Registration Statement has become effective under the Act 
               and, to such counsel's knowledge, no stop order suspending the 
               effectiveness of the Registration Statement has been issued 
               and no proceedings for that purpose have been instituted or 
               are pending or threatened under the Act;
  
                    (xi)      The Registration Statement and the Prospectus, 
               and each amendment or supplement thereto (other than the 
               financial statements, and the notes and schedules thereto, and 
               other financial and statistical information derived therefrom 
               as to which such counsel need express no opinion), as of the 
               effective date of the Registration Statement, complied as to 
               form in all material respects with the requirements of the Act 
               and the applicable Rules and Regulations; 

                    (xii)     The information in the Prospectus under the 
               caption "Description of Capital Stock," to the extent that it 
               constitutes matters of law or legal conclusions, has been 
               reviewed by such counsel and is a fair summary in all material 
               respects of such matters and conclusions; and the form of 
               certificate evidencing the Common Stock and filed as an 
               exhibit to the Registration Statement complies with Delaware 
               law;

                    (xiii)    The description in the Registration Statement 
               and the Prospectus of the charter and bylaws of the Company 
               are accurate and fairly present the information required to be 
               presented by the Act and the applicable Rules and Regulations;

                    (xiv)     To such counsel's knowledge, there are no 
               agreements, contracts, leases or documents to which the 
               Company is a party of a character required to be described or 
               referred to in the Registration Statement or Prospectus or to 
               be filed as an exhibit to the Registration Statement which are 
               not described or referred to therein or filed as required;

                    (xv)      The performance of this Agreement and the 
               consummation of the transactions herein contemplated (other 
               than performance of the Company's indemnification obligations 
               hereunder, concerning which no opinion need be expressed) will 
               not (a) result in any violation of the Company's charter or 
               bylaws or (b) result in a material breach or violation of any 
               of the terms and provisions of, or constitute a default under, 
               any bond, debenture, note or other evidence of indebtedness, 
               or any lease, contract, indenture, mortgage, deed of trust, 
               loan agreement, joint venture or other agreement or instrument 
               to which the Company is a party or by which its properties are 
               bound and which is listed as an exhibit to or otherwise 
               referred to in the Registration Statement or is otherwise 
               identified on a schedule certified by an officer of the 
               Company, or any applicable statute, rule or regulation or, to 
               the best of such counsel's knowledge, any order, writ or 
               decree of any court, government or governmental agency or body 
               having jurisdiction over the Company or the Subsidiary, or 
               over any of their properties or operations;

                    (xvi)     No consent, approval, authorization or order 
               of or qualification with any court, government or governmental 
               agency or body having jurisdiction over the Company or the 
               Subsidiary or over any of their respective properties or 
               operations is necessary in connection with the consummation by 
               the Company of the transactions herein contemplated, except 
               such as have been obtained under the Act or such as may be 
               required under state or other securities or Blue Sky laws

                                      19


               in connection with the purchase and the distribution of the 
               Shares by the Underwriters, as to which such counsel need not 
               express an opinion;

                    (xvii)    To such counsel's knowledge, there are no 
               legal or governmental proceedings pending or threatened 
               against the Company or the Subsidiary of a character required 
               to be disclosed in the Registration Statement or the 
               Prospectus by the Act or the Rules and Regulations, other than 
               those described therein;

                    (xviii)   To such counsel's knowledge, neither the 
               Company nor the Subsidiary is presently (a) in material 
               violation of its respective charter or bylaws or (b) in 
               material breach of any applicable statute, rule or regulation 
               known to such counsel or, to such counsel's knowledge, any 
               order, writ or decree of any court or governmental agency or 
               body having jurisdiction over the Company or the Subsidiary, 
               or over any of their properties or operations; 

                    (xix)     To such counsel's knowledge, except as set 
               forth in the Registration Statement and Prospectus, no holders 
               of Common Stock or other securities of the Company have 
               registration rights with respect to securities of the Company 
               and, except as set forth in the Registration Statement and 
               Prospectus, all holders of securities of the Company having 
               rights known to such counsel to registration of such shares of 
               Common Stock or other securities, because of the filing of the 
               Registration Statement by the Company have, with respect to 
               the offering contemplated thereby, waived such rights or such 
               rights have expired by reason of lapse of time following 
               notification of the Company's intent to file the Registration 
               Statement or have included securities in the Registration 
               Statement pursuant to the exercise of and in full satisfaction 
               of such rights;

                    (xx)      The Shares have been duly approved for 
               inclusion on the Nasdaq National Market, subject to the 
               consummation of the transactions contemplated by this 
               Agreement and to official notice of issuance;

                    (xxi)     The Company is not, and, assuming the 
               application of the net proceeds from the sale of the Shares as 
               described in the Prospectus under the caption "Use of 
               Proceeds," will not become, an "investment company" subject to 
               registration under the 1940 Act;

                    (xxii)    Each Selling Stockholder which is not a natural 
               person has full right, power and authority to enter into and 
               to perform its obligations under the Selling Stockholder 
               Agreement to be executed and delivered by it or him in 
               connection with the transactions contemplated herein; the 
               Selling Stockholder Agreement of each Selling Stockholder that 
               is not a natural person has been duly authorized by such 
               Selling Stockholder; the Selling Stockholder Agreement of each 
               Selling Stockholder has been duly executed and delivered by or 
               on behalf of such Selling Stockholder; and the Power of 
               Attorney and Custody Agreement of each Selling Stockholder 
               constitutes the valid and binding agreement of such Selling 
               Stockholder, enforceable in accordance with its terms, except 
               as the enforcement thereof may be limited by bankruptcy, 
               insolvency, reorganization, moratorium or other similar laws 
               relating to or affecting creditors' rights generally or by 
               general equitable principles;

                    (xxiii)   Each of the Selling Stockholders has full 
               power, authority and to such counsel's knowledge, right to 
               enter into and to perform its obligations under this Agreement 
               and to sell, transfer, assign and deliver the Shares to be 
               sold by such Selling Stockholder hereunder;

                    (xxiv)    This Agreement has been duly authorized by each 
               Selling Stockholder that is not a natural person and has been 
               duly executed and delivered by or on behalf of each Selling 
               Stockholder; and

                                      20


                    (xxv)     Upon the delivery of and payment for the Shares 
               as contemplated in this Agreement, each of the Underwriters 
               will receive valid marketable title to the Shares purchased by 
               it from such Selling Stockholder, free and clear of any 
               pledge, lien, security interest, encumbrance, claim or 
               equitable interest.  In rendering such opinion, such counsel 
               may assume that the Underwriters are without notice of any 
               defect in the title of the Shares being purchased from the 
               Selling Stockholders.

          In addition, such counsel shall state that such counsel has 
participated in conferences with officials and other representatives of the 
Company, the Representatives, Underwriters' Counsel and the independent 
certified public accountants of the Company, at which such conferences the 
contents of the Registration Statement and Prospectus and related matters 
were discussed, and although they have not independently verified the 
accuracy, fairness or completeness of the statements contained in the 
Registration Statement or the Prospectus, nothing has come to the attention 
of such counsel which leads them to believe that, at the time the 
Registration Statement became effective and at all times subsequent thereto 
up to and on the Closing Date and on any later date on which Option Shares 
are to be purchased, the Registration Statement and any amendment or 
supplement thereto (other than the financial statements and the notes and 
schedules thereto and other financial and statistical information derived 
therefrom, as to which such counsel need express no comment) contained any 
untrue statement of a material fact or omitted to state a material fact 
required to be stated therein or necessary to make the statements therein not 
misleading, or at the Closing Date or any later date on which the Option 
Shares are to be purchased, as the case may be, the Registration Statement, 
the Prospectus and any amendment or supplement thereto (except as aforesaid) 
contained any untrue statement of a material fact or omitted to state a 
material fact necessary to make the statements therein, in the light of the 
circumstances under which they were made, not misleading.

          Counsel rendering the foregoing opinion may rely as to questions of 
law not involving the laws of the United States or the States of Texas and 
Delaware upon opinions of local counsel, and as to questions of fact upon 
representations or certificates of officers of the Company, the Selling 
Stockholders or officers of the Selling Stockholders (when the Selling 
Stockholder is not a natural person), and of government officials, in which 
case their opinion is to state that they are so relying and that they have no 
knowledge of any material misstatement or inaccuracy in any such opinion, 
representation or certificate.  Copies of any opinion, representation or 
certificate so relied upon shall be delivered to you, as Representatives of 
the Underwriters, and to Underwriters' Counsel.

          (e)  You shall have received on the Closing Date and on any later 
date on which Option Shares are to be purchased, as the case may be, an 
opinion of Brobeck, Phleger & Harrison LLP, in form and substance 
satisfactory to you, with respect to the sufficiency of all such corporate 
proceedings and other legal matters relating to this Agreement and the 
transactions contemplated hereby as you may reasonably require, and the 
Company shall have furnished to such counsel such documents as they may have 
requested for the purpose of enabling them to pass upon such matters.

          (f)  You shall have received on the Closing Date and on any later 
date on which Option Shares are to be purchased, as the case may be, a letter 
from Ernst & Young LLP addressed to the Underwriters, dated the Closing Date 
or such later date on which Option Shares are to be purchased, as the case 
may be, confirming that they are independent certified public accountants 
with respect to the Company within the meaning of the Act and the applicable 
published Rules and Regulations and based upon the procedures described in 
such letter delivered to you concurrently with the execution of this 
Agreement (herein called the "Original Letter"), but carried out to a date 
not more than five (5) business days prior to the Closing Date or such later 
date on which Option Shares are to be purchased, as the case may be, (i) 
confirming, to the extent true, that the statements and conclusions set forth 
in the Original Letter are accurate as of the Closing Date or such later date 
on which Option Shares are to be purchased, as the case may be, and (ii) 
setting forth any revisions and additions to the statements and conclusions 
set forth in the Original Letter which are necessary to reflect any changes 
in the facts described in the Original Letter since the date of such letter, 
or to reflect the availability of more recent financial statements, data or 
information.  The letter shall not disclose any change in the condition 
(financial or otherwise), earnings, operations, business or business 
prospects of the Company and the

                                      21


Subsidiary, considered as one enterprise from that set forth in the 
Registration Statement or Prospectus, which, in your reasonable judgment, is 
material and adverse and that makes it, in your reasonable judgment, 
impracticable or inadvisable to proceed with the public offering of the 
Shares as contemplated by the Prospectus.  The Original Letter from Ernst & 
Young LLP shall be addressed to or for the use of the Underwriters in form 
and substance satisfactory to the Underwriters and shall (i) represent, to 
the extent true, that they are independent certified public accountants with 
respect to the Company within the meaning of the Act and the applicable 
published Rules and Regulations, (ii) set forth their opinion with respect to 
their examination of the consolidated balance sheet of the Company as of 
January 31, 1998 and related consolidated statements of operations, 
stockholders' equity, and cash flows for the twelve (12) months ended January 
31, 1998, and (iii) address other matters agreed upon by Ernst & Young LLP 
and you.  In addition, you shall have received from Ernst & Young LLP a 
letter addressed to the Company and made available to you for the use of the 
Underwriters stating that their review of the Company's system of internal 
accounting controls, to the extent they deemed necessary in establishing the 
scope of their examination of the Company's consolidated financial statements 
as of January 31, 1998, did not disclose any weaknesses in internal controls 
that they considered to be material weaknesses.

          (g)  You shall have received on the Closing Date and on any later 
date on which Option Shares are to be purchased, as the case may be, a 
certificate of the Company, dated the Closing Date or such later date on 
which Option Shares are to be purchased, as the case may be, signed by the 
Chief Executive Officer and Chief Financial Officer of the Company, to the 
effect that, and you shall be satisfied that:

               (i)  The representations and warranties of the Company in this 
          Agreement are true and correct, as if made on and as of the Closing 
          Date or any later date on which Option Shares are to be purchased, 
          as the case may be, and the Company has complied with all the 
          agreements and satisfied all the conditions on its part to be 
          performed or satisfied at or prior to the Closing Date or any later 
          date on which Option Shares are to be purchased, as the case may be;

               (ii) No stop order suspending the effectiveness of the 
          Registration Statement has been issued and no proceedings for that 
          purpose have been instituted or are pending or threatened under the 
          Act;

               (iii)     When the Registration Statement became effective and 
          at all times subsequent thereto up to the delivery of such 
          certificate, the Registration Statement and the Prospectus, and any 
          amendments or supplements thereto, contained all material 
          information required to be included therein by the Act and the 
          Rules and Regulations and in all material respects conformed to the 
          requirements of the Act and the Rules and Regulations, the 
          Registration Statement, and any amendment or supplement thereto, 
          did not and does not include any untrue statement of a material 
          fact or omit to state a material fact required to be stated therein 
          or necessary to make the statements therein not misleading, the 
          Prospectus, and any amendment or supplement thereto, did not and 
          does not include any untrue statement of a material fact or omit to 
          state a material fact necessary to make the statements therein, in 
          the light of the circumstances under which they were made, not 
          misleading, and, since the effective date of the Registration 
          Statement, there has occurred no event required to be set forth in 
          an amended or supplemented Prospectus which has not been so set 
          forth; and

               (iv) Subsequent to the respective dates as of which 
          information is given in the Registration Statement and Prospectus, 
          there has not been (a) any material adverse change in the condition 
          (financial or otherwise), earnings, operations, business or 
          business prospects of the Company and the Subsidiary, considered as 
          one enterprise, (b) any transaction that is material to the Company 
          and the Subsidiary, considered as one enterprise, except 
          transactions entered into in the ordinary course of business, (c) 
          any obligation, direct or contingent, that is material to the 
          Company and the Subsidiary, considered as one enterprise, incurred 
          by the Company or the Subsidiary, except obligations incurred in 
          the ordinary course of business, (d) any change in the capital 
          stock or outstanding indebtedness of the Company or the Subsidiary 
          that is material to the Company and the

                                      22


          Subsidiary, considered as one enterprise, (e) any dividend or 
          distribution of any kind declared, paid or made on the capital 
          stock of the Company or the Subsidiary, or (f) any loss or damage 
          (whether or not insured) to the property of the Company or the 
          Subsidiary which has been sustained or will have been sustained 
          which has a material adverse effect on the condition (financial or 
          otherwise), earnings, operations, business or business prospects of 
          the Company and the Subsidiary, considered as one enterprise.

          (h)  You shall be satisfied that, and you shall have received a 
certificate, dated the Closing Date, or any later date on which Option Shares 
are to be purchased, as the case may be, from the Attorneys for each Selling 
Stockholder to the effect that, as of the Closing Date, or any later date on 
which Option Shares are to be purchased, as the case may be, they have not 
been informed that:

               (i)  The representations and warranties made by such Selling 
          Stockholder herein are not true or correct in any material respect 
          on the Closing Date or on any later date on which Option Shares are 
          to be purchased, as the case may be; or

               (ii) Such Selling Stockholder has not complied in any material 
          respect with any obligation or failed to satisfy in any material 
          respect any condition which is required to be performed or 
          satisfied on the part of such Selling Stockholder at or prior to 
          the Closing Date or any later date on which Option Shares are to be 
          purchased, as the case may be.

          (i)  The Company shall have obtained and delivered to you an 
agreement from each officer and director of the Company who owns shares of 
Common Stock or options to purchase shares of Common Stock that will vest 
within 180 days of the date of this Agreement, each Selling Stockholder and 
each other beneficial owner of 1,000 or more shares of Common Stock and/or 
options to purchase shares of Common Stock that will vest within 180 days of 
the date of this Agreement officer in writing prior to the date hereof that 
such person will not, during the Lock-up Period, effect the Disposition of 
any Securities now owned or hereafter acquired directly by such person or 
with respect to which such person has or hereafter acquires the power of 
disposition, otherwise than (i) as a bona fide gift or gifts, PROVIDED the 
donee or donees thereof agree in writing to be bound by this restriction, 
(ii) as a distribution to partners or stockholders of such person, PROVIDED 
that the distributees thereof agree in writing to be bound by the terms of 
this restriction, or (iii) with the prior written consent of BancAmerica 
Robertson Stephens  (which consent has been given with respect to the pledge 
of any shares of Common Stock that were purchased pursuant to the Company's 
"Stock Option Loan Program" described in the Registration Statement or any 
other loan program approved in writing by BancAmerica Robertson Stephens). 
The foregoing restriction shall have been expressly agreed to preclude the 
holder of the Securities from engaging in any hedging or other transaction 
which is designed to or reasonably expected to lead to or result in a 
Disposition of Securities during the Lock-up Period, even if such Securities 
would be disposed of by someone other than the such holder.  Such prohibited 
hedging or other transactions would including, without limitation, any short 
sale (whether or not against the box) or any purchase, sale or grant of any 
right (including, without limitation, any put or call option) with respect to 
any Securities or with respect to any security (other than a broad-based 
market basket or index) that includes, relates to or derives any significant 
part of its value from Securities.  Such person will have also agreed and 
consented to the entry of stop transfer instructions with the Company's 
transfer agent against the transfer of the Securities held by such person 
except in compliance with this restriction.  Furthermore, such person will 
have also agreed that, without the prior written consent of BancAmerica 
Robertson Stephens, such person will not, during the period ending with the 
conclusion of the Lock-Up Period, make any demand for or exercise any right 
with respect to, the registration of any Securities, except pursuant to the 
Registration Statement to the extent set forth in Schedule B hereto.

          (j)  The Company and the Selling Stockholders shall have furnished 
to you such further certificates and documents as you shall reasonably 
request (including certificates of officers of the Company, the Selling 
Stockholders or officers of the Selling Stockholders (when the Selling 
Stockholder is not a natural person)) as to the accuracy of the 
representations and warranties of the Company and the Selling Stockholders 
herein, as to the

                                      23


performance by the Company and the Selling Stockholders of their respective 
obligations hereunder and as to the other conditions concurrent and precedent 
to the obligations of the Underwriters hereunder.

          All such opinions, certificates, letters and documents will be in 
compliance with the provisions hereof only if they are reasonably 
satisfactory to Underwriters' Counsel.  The Company and the Selling 
Stockholders will furnish you with such number of conformed copies of such 
opinions, certificates, letters and documents as you shall reasonably request.

     7.   OPTION SHARES.

          (a)  On the basis of the representations, warranties and agreements 
herein contained, but subject to the terms and conditions herein set forth, 
the Company and the Selling Stockholder that is identified in Schedule B 
hereto, severally and not jointly, hereby grant to the several Underwriters, 
for the purpose of covering over-allotments in connection with the 
distribution and sale of the Firm Shares only, a nontransferable option to 
purchase up to 62,033 and 702,967 Option Shares, respectively, at the 
purchase price per share for the Firm Shares set forth in Section 3 hereof.  
Such option may be exercised by the Representatives on behalf of the several 
Underwriters on one (1) or more occasions in whole or in part during the 
period of thirty (30) days after the date on which the Firm Shares are 
initially offered to the public, by giving written notice to the Company and 
such Selling Stockholder.  Any exercise of the option granted to the 
Underwriters pursuant to this Section 7 shall first be applied to the Option 
Shares offered by the Selling Stockholder, with any Option Shares in excess 
of 702,967 Option Shares to be sold to the Underwriters by the Company.  The 
number of Option Shares to be purchased by each Underwriter upon the exercise 
of such option shall be the same proportion of the total number of Option 
Shares to be purchased by the several Underwriters pursuant to the exercise 
of such option as the number of Firm Shares purchased by such Underwriter 
(set forth in Schedule A hereto) bears to the total number of Firm Shares 
purchased by the several Underwriters (set forth in Schedule A hereto), 
adjusted by the Representatives in such manner as to avoid fractional shares.

          Delivery of definitive certificates for the Option Shares to be 
purchased by the several Underwriters pursuant to the exercise of the option 
granted by this Section 7 shall be made against payment of the purchase price 
therefor by the several Underwriters by certified or official bank check or 
checks drawn in same-day funds or by wire transfer in same-day funds, payable 
to the order of the Company (to the extent that the Option Shares are sold by 
the Company) and the Custodian (to the extent that the Option Shares are sold 
by the Selling Stockholder) for the account of the Selling Stockholder.  Such 
delivery and payment shall take place at the offices of Locke Purnell Rain 
Harrell, 2200 Ross Avenue, Suite 2200, Dallas, Texas, or at such other place 
as may be mutually agreed upon among the Representatives, the Selling 
Stockholder and the Company (i) on the Closing Date, if written notice of the 
exercise of such option is received by the Company at least two (2) full 
business days prior to the Closing Date, or (ii) on a date which shall not be 
later than the third (3rd) full business day following the date the Company 
and the Selling Stockholder (directly or indirectly through the Custodian) 
receive written notice of the exercise of such option, if such notice is 
received by the Company and the Selling Stockholder (directly or indirectly 
through the Custodian) less than two (2) full business days prior to the 
Closing Date. 

          The certificates for the Option Shares to be so delivered will be 
made available to you at such office or such other location including, 
without limitation, in New York City, as you may reasonably request for 
checking at least one (1) full business day prior to the date of payment and 
delivery and will be in such names and denominations as you may request, such 
request to be made at least two (2) full business days prior to such date of 
payment and delivery.  If the Representatives so elect, delivery of the 
Option Shares may be made by credit through full fast transfer to the 
accounts at The Depository Trust Company designated by the Representatives.

          It is understood that you, individually, and not as the 
Representatives of the several Underwriters, may (but shall not be obligated 
to) make payment of the purchase price on behalf of any Underwriter or 
Underwriters whose funds shall not have been received by you prior to the 
date of payment and delivery for the Option Shares to be

                                      24


purchased by such Underwriter or Underwriters.  Any such payment by you shall 
not relieve any such Underwriter or Underwriters of any of its or their 
obligations hereunder.

          (b)  Upon exercise of any option provided for in Section 7(a) 
hereof, the obligations of the several Underwriters to purchase such Option 
Shares will be subject (as of the date hereof and as of the date of payment 
and delivery for such Option Shares) to the accuracy of and compliance with 
the representations, warranties and agreements of the Company and the Selling 
Stockholder herein, to the accuracy of the statements of the Company, the 
Selling Stockholder and officers of the Company made pursuant to the 
provisions hereof, to the performance by the Company and the Selling 
Stockholder of their respective obligations hereunder, to the conditions set 
forth in Section 6 hereof, and to the condition that all proceedings taken at 
or prior to the payment date in connection with the sale and transfer of such 
Option Shares shall be satisfactory in form and substance to you and to 
Underwriters' Counsel, and you shall have been furnished with all such 
documents, certificates and opinions as you may request in order to evidence 
the accuracy and completeness of any of the representations, warranties or 
statements, the performance of any of the covenants or agreements of the 
Company and the Selling Stockholder or the satisfaction of any of the 
conditions herein contained.

     8.   INDEMNIFICATION AND CONTRIBUTION.

          (a)  The Company agrees to indemnify and hold harmless each 
Underwriter against any losses, claims, damages or liabilities, joint or 
several, to which such Underwriter may become subject (including, without 
limitation, in its capacity as an Underwriter or as a "qualified independent 
underwriter" within the meaning of Schedule E of the Bylaws of the NASD), 
under the Act, the Exchange Act or otherwise, specifically including, but not 
limited to, losses, claims, damages or liabilities (or actions in respect 
thereof) arising out of or based upon (i) any breach of any representation, 
warranty, agreement or covenant of the Company herein contained, (ii) any 
untrue statement or alleged untrue statement of any material fact contained 
in the Registration Statement or any amendment or supplement thereto, or the 
omission or alleged omission to state therein a material fact required to be 
stated therein or necessary to make the statements therein not misleading, or 
(iii) any untrue statement or alleged untrue statement of any material fact 
contained in any Preliminary Prospectus or the Prospectus or any amendment or 
supplement thereto, or the omission or alleged omission to state therein a 
material fact required to be stated therein or necessary to make the 
statements therein, in the light of the circumstances under which they were 
made, not misleading, and agrees to reimburse each Underwriter for any legal 
or other expenses reasonably incurred by it in connection with investigating 
or defending any such loss, claim, damage, liability or action; PROVIDED, 
HOWEVER, that the Company shall not be liable in any such case to the extent 
that any such loss, claim, damage, liability or action arises out of or is 
based upon an untrue statement or alleged untrue statement or omission or 
alleged omission made in the Registration Statement, such Preliminary 
Prospectus or the Prospectus, or any such amendment or supplement thereto, in 
reliance upon, and in conformity with, written information relating to any 
Underwriter furnished to the Company by such Underwriter, directly or through 
you, specifically for use in the preparation thereof; and, PROVIDED, FURTHER, 
that the indemnity agreement provided in this Section 8(a) with respect to 
any Preliminary Prospectus shall not inure to the benefit of any Underwriter 
from whom the person asserting any losses, claims, damages, liabilities or 
actions based upon any untrue statement or alleged untrue statement of a 
material fact or omission or alleged omission to state therein a material 
fact purchased Shares, if a copy of a subsequent Preliminary Prospectus in 
which such untrue statement or alleged untrue statement or omission or 
alleged omission was corrected had not been sent or given to such person 
prior to the time that such person purchased such Shares, unless such failure 
is the result of noncompliance by the Company with Section 4(d) hereof.

          The indemnity agreement in this Section 8(a) shall extend upon the 
same terms and conditions to, and shall inure to the benefit of, each person, 
if any, who controls any Underwriter within the meaning of the Act or the 
Exchange Act.  This indemnity agreement shall be in addition to any 
liabilities which the Company or such Selling Stockholders may otherwise have.

                                      25


          (b)  Each Selling Stockholder, severally and not jointly, agrees to 
indemnify and hold harmless each Underwriter against any losses, claims, 
damages or liabilities, joint or several, to which such Underwriter may 
become subject (including, without limitation, in its capacity as an 
Underwriter or as a "qualified independent underwriter" within the meaning of 
Schedule E or the Bylaws of the NASD) under the Act, the Exchange Act or 
otherwise, specifically including, but not limited to, losses, claims, 
damages or liabilities (or actions in respect thereof) arising out of or 
based upon (i) any breach of any representation, warranty, agreement or 
covenant of such Selling Stockholder herein contained, (ii) any untrue 
statement or alleged untrue statement of any material fact contained in the 
Registration Statement or any amendment or supplement thereto, or the 
omission or alleged omission to state therein a material fact required to be 
stated therein or necessary to make the statements therein not misleading, or 
(iii) any untrue statement or alleged untrue statement of any material fact 
contained in any Preliminary Prospectus or the Prospectus or any amendment or 
supplement thereto, or the omission or alleged omission to state therein a 
material fact necessary to make the statements therein, in the light of the 
circumstances under which they were made, not misleading, in the case of 
subparagraphs (ii) and (iii) of this Section 8(b) to the extent, but only to 
the extent, that such untrue statement or alleged untrue statement or 
omission or alleged omission was made in reliance upon and in conformity with 
written information furnished to the Company or such Underwriter by such 
Selling Stockholder, directly or through such Selling Stockholder's 
representatives, specifically for use in the preparation thereof, and agrees 
to reimburse each Underwriter for any legal or other expenses reasonably 
incurred by it in connection with investigating or defending any such loss, 
claim, damage, liability or action; PROVIDED, HOWEVER, that the Company shall 
not be liable in any such case to the extent that any such loss, claim, 
damage, liability or action arises out of or is based upon an untrue 
statement or alleged untrue statement or omission or alleged omission made in 
the Registration Statement, such Preliminary Prospectus or the Prospectus, or 
any such amendment or supplement thereto, in reliance upon, and in conformity 
with, written information relating to any Underwriter furnished to the 
Company by such Underwriter, directly or through you, specifically for use in 
the preparation thereof; and, PROVIDED, FURTHER, that the indemnity agreement 
provided in this Section 8(a) with respect to any Preliminary Prospectus 
shall not inure to the benefit of any Underwriter from whom the person 
asserting any losses, claims, damages, liabilities or actions based upon any 
untrue statement or alleged untrue statement of a material fact or omission 
or alleged omission to state therein a material fact purchased Shares, if a 
copy of a subsequent Preliminary Prospectus in which such untrue statement or 
alleged untrue statement or omission or alleged omission was corrected had 
not been sent or given to such person prior to the time that such person 
purchased such Shares, unless such failure is the result of noncompliance by 
the Company with Section 4(d) hereof.

          The indemnity agreement in this Section 8(b) shall extend upon the
same terms and conditions to, and shall inure to the benefit of, each person, if
any, who controls any Underwriter within the meaning of the Act or the Exchange
Act.  This indemnity agreement shall be in addition to any liabilities which
such Selling Stockholder may 

                                      26


otherwise have.  Notwithstanding, no Selling Stockholder shall be liable 
hereunder to the Underwriters for the obligations owed by any other Selling 
Stockholder to the Underwriters.

          (c)  Each Underwriter, severally and not jointly, agrees to 
indemnify and hold harmless the Company and each Selling Stockholder against 
any losses, claims, damages or liabilities, joint or several, to which the 
Company or such Selling Stockholder may become subject under the Act or 
otherwise, specifically including, but not limited to, losses, claims, 
damages or liabilities (or actions in respect thereof) arising out of or 
based upon (i) any breach of any representation, warranty, agreement or 
covenant of such Underwriter herein contained, (ii) any untrue statement or 
alleged untrue statement of any material fact contained in the Registration 
Statement or any amendment or supplement thereto, or the omission or alleged 
omission to state therein a material fact required to be stated therein or 
necessary to make the statements therein not misleading, or (iii) any untrue 
statement or alleged untrue statement of any material fact contained in any 
Preliminary Prospectus or the Prospectus or any amendment or supplement 
thereto, or the omission or alleged omission to state therein a material fact 
necessary to make the statements therein, in the light of the circumstances 
under which they were made, not misleading, in the case of subparagraphs (ii) 
and (iii) of this Section 8(c) to the extent, but only to the extent, that 
such untrue statement or alleged untrue statement or omission or alleged 
omission was made in reliance upon and in conformity with written information 
furnished to the Company by such Underwriter, directly or through you, 
specifically for use in the preparation thereof, and agrees to reimburse the 
Company and each such Selling Stockholder for any legal or other expenses 
reasonably incurred by the Company and each such Selling Stockholder in 
connection with investigating or defending any such loss, claim, damage, 
liability or action.

          The indemnity agreement in this Section 8(c) shall extend upon the 
same terms and conditions to, and shall inure to the benefit of, each officer 
of the Company who signed the Registration Statement and each director of the 
Company, each Selling Stockholder and each person, if any, who controls the 
Company or any Selling Stockholder within the meaning of the Act or the 
Exchange Act.  This indemnity agreement shall be in addition to any 
liabilities which each Underwriter may otherwise have.

          (d)  Promptly after receipt by an indemnified party under this
Section 8 of notice of the commencement of any action, such indemnified party
shall, if a claim in respect thereof is to be made against any indemnifying
party under this Section 8, notify the indemnifying party in writing of the
commencement thereof but the omission so to notify the indemnifying party will
not relieve it from any liability which it may have to any indemnified party
otherwise than under this Section 8 unless the indemnifying party is materially
prejudiced by such failure to be timely notified.  In case any such action is
brought against any indemnified party, and it notified the indemnifying party of
the commencement thereof, the indemnifying party will be entitled to participate
therein and, to the extent that it shall elect by written notice delivered to
the indemnified party promptly after receiving the aforesaid notice from such
indemnified party, to assume the defense thereof, with counsel reasonably
satisfactory to such indemnified party; PROVIDED, HOWEVER, that if the
defendants in any such action include both the indemnified party and the
indemnifying party and the indemnified party shall have reasonably concluded
that there may be legal defenses available to it and/or other indemnified
parties which are different from or additional to those available to the
indemnifying party, the indemnified party or parties shall have the right to
select separate counsel to assume such legal defenses and to otherwise
participate in the defense of such action on behalf of such indemnified party or
parties.  Upon receipt of notice from the indemnifying party to such indemnified
party of the indemnifying party's election so to assume the defense of such
action and approval by the indemnified party of counsel, the indemnifying party
will not be liable to such indemnified party under this Section 8 for any legal
or other expenses subsequently incurred by such indemnified party in connection
with the defense thereof unless (i) the indemnified party shall have employed
separate counsel in accordance with the proviso to the next preceding sentence
(it being understood, however, that the indemnifying party shall not be liable
for the expenses of more than one separate counsel (together with appropriate
local counsel) approved by the indemnifying party representing all the
indemnified parties under Section 8(a), 8(b) or 8(c) hereof who are parties to
such action), (ii) the indemnifying party shall not have employed counsel
satisfactory to the indemnified party to represent the indemnified party within
a reasonable time after notice of commencement of the action or (iii) the
indemnifying party has authorized the employment of counsel for the indemnified
party at the expense of the indemnifying party; PROVIDED, 

                                      27


that in no event shall the indemnifying party be liable to such indemnified 
party for any legal fees or expenses in excess of reasonable legal fees and 
expenses.  In no event shall any indemnifying party be liable in respect of 
any amounts paid in settlement of any action unless the indemnifying party 
shall have approved the terms of such settlement; PROVIDED that such consent 
shall not be unreasonably withheld.  No indemnifying party shall, without the 
prior written consent of the indemnified party, effect any settlement of any 
pending or threatened proceeding in respect of which any indemnified party is 
or could have been a party and indemnification could have been sought 
hereunder by such indemnified party, unless such settlement includes an 
unconditional release of such indemnified party from all liability on all 
claims that are the subject matter of such proceeding and does not include 
any statement as to or an admission of fault, culpability or a failure to 
act, by or on behalf of such indemnified party.

          (e)  In order to provide for just and equitable contribution in any 
action in which a claim for indemnification is made pursuant to this Section 
8 but it is judicially determined (by the entry of a final judgment or decree 
by a court of competent jurisdiction and the expiration of time to appeal or 
the denial of the last right of appeal) that such indemnification may not be 
enforced in such case notwithstanding the fact that this Section 8 provides 
for indemnification in such case, all the parties hereto shall contribute to 
the aggregate losses, claims, damages or liabilities to which they may be 
subject (after contribution from others) in such proportion so that, except 
as set forth in Section 8(f) hereof, the Underwriters severally and not 
jointly are responsible pro rata for the portion represented by the 
percentage that the underwriting discount bears to the initial public 
offering price, and the Company and the Selling Stockholders are responsible 
for the remaining portion, PROVIDED, HOWEVER, that (i) no Underwriter shall 
be required to contribute any amount in excess of the amount by which the 
underwriting discount applicable to the Shares purchased by such Underwriter 
exceeds the amount of damages which such Underwriter has otherwise required 
to pay and (ii) no person guilty of a fraudulent misrepresentation (within 
the meaning of Section 11(f) of the Act) shall be entitled to contribution 
from any person who is not guilty of such fraudulent misrepresentation.  The 
contribution agreement in this Section 8(e) shall extend upon the same terms 
and conditions to, and shall inure to the benefit of, each person, if any, 
who controls any Underwriter, the Company or any Selling Stockholder within 
the meaning of the Act or the Exchange Act and each officer of the Company 
who signed the Registration Statement and each director of the Company.

          (f)  The liability of each Selling Stockholder under the 
representations, warranties and agreements contained herein and under the 
indemnity and contribution agreements contained in the provisions of this 
Section 8 shall be limited to an amount equal to the initial public offering 
price of the Selling Stockholder Shares sold by such Selling Stockholder to 
the Underwriters minus the amount of the underwriting discount paid thereon 
to the Underwriters by such Selling Stockholder.  The Company and such 
Selling Stockholders may agree, as among themselves and without limiting the 
rights of the Underwriters under this Agreement, as to the respective amounts 
of such liability for which they each shall be responsible; and nothing 
contained herein shall be construed to alter any pre-existing arrangements 
between the Company and any such Selling Stockholder with respect to their 
responsibility for liability.

          (g)  The parties to this Agreement hereby acknowledge that they are 
sophisticated business persons who were represented by counsel during the 
negotiations regarding the provisions hereof including, without limitation, 
the provisions of this Section 8, and are fully informed regarding said 
provisions. They further acknowledge that the provisions of this Section 8 
fairly allocate the risks in light of the ability of the parties to 
investigate the Company and its business in order to assure that adequate 
disclosure is made in the Registration Statement and Prospectus as required 
by the Act.

     9.   REPRESENTATIONS, WARRANTIES, COVENANTS AND AGREEMENTS TO SURVIVE
DELIVERY.  All representations, warranties, covenants and agreements of the
Company, the Selling Stockholders and the Underwriters herein or in certificates
delivered pursuant hereto, and the indemnity and contribution agreements
contained in Section 8 hereof shall remain operative and in full force and
effect regardless of any investigation made by or on behalf of any Underwriter
or any person controlling any Underwriter within the meaning of the Act or the
Exchange Act, or by or on behalf of the Company or any Selling Stockholder, or
any of their officers, directors or controlling persons within the meaning of

                                      28


the Act or the Exchange Act, and shall survive the delivery of the Shares to 
the several Underwriters hereunder or termination of this Agreement.

     10.  SUBSTITUTION OF UNDERWRITERS.  If any Underwriter or Underwriters 
shall fail to take up and pay for the number of Firm Shares agreed by such 
Underwriter or Underwriters to be purchased hereunder upon tender of such 
Firm Shares in accordance with the terms hereof, and if the aggregate number 
of Firm Shares which such defaulting Underwriter or Underwriters so agreed 
but failed to purchase does not exceed 10% of the Firm Shares, the remaining 
Underwriters shall be obligated, severally in proportion to their respective 
commitments hereunder, to take up and pay for the Firm Shares of such 
defaulting Underwriter or Underwriters.

          If any Underwriter or Underwriters so defaults and the aggregate 
number of Firm Shares which such defaulting Underwriter or Underwriters 
agreed but failed to take up and pay for exceeds 10% of the Firm Shares, the 
remaining Underwriters shall have the right, but shall not be obligated, to 
take up and pay for (in such proportions as may be agreed upon among them) 
the Firm Shares which the defaulting Underwriter or Underwriters so agreed 
but failed to purchase.  If such remaining Underwriters do not, at the 
Closing Date, take up and pay for the Firm Shares which the defaulting 
Underwriter or Underwriters so agreed but failed to purchase, the Closing 
Date shall be postponed for twenty-four (24) hours to allow the several 
Underwriters the privilege of substituting within twenty-four (24) hours 
(including non-business hours) another underwriter or underwriters (which may 
include any nondefaulting Underwriter) satisfactory to the Company.  If no 
such underwriter or underwriters shall have been substituted as aforesaid by 
such postponed Closing Date, the Closing Date may, at the option of the 
Company, be postponed for a further twenty-four (24) hours, if necessary, to 
allow the Company the privilege of finding another underwriter or 
underwriters, satisfactory to you, to purchase the Firm Shares which the 
defaulting Underwriter or Underwriters so agreed but failed to purchase.  If 
it shall be arranged for the remaining Underwriters or substituted 
underwriter or underwriters to take up the Firm Shares of the defaulting 
Underwriter or Underwriters as provided in this Section 10, (i) the Company 
shall have the right to postpone the time of delivery for a period of not 
more than seven (7) full business days, in order to effect whatever changes 
may thereby be made necessary in the Registration Statement or the 
Prospectus, or in any other documents or arrangements, and the Company agrees 
promptly to file any amendments to the Registration Statement, supplements to 
the Prospectus or other such documents which may thereby be made necessary, 
and (ii) the respective number of Firm Shares to be purchased by the 
remaining Underwriters and substituted underwriter or underwriters shall be 
taken as the basis of their underwriting obligation.  If the remaining 
Underwriters shall not take up and pay for all such Firm Shares so agreed to 
be purchased by the defaulting Underwriter or Underwriters or substitute 
another underwriter or underwriters as aforesaid and the Company shall not 
find or shall not elect to seek another underwriter or underwriters for such 
Firm Shares as aforesaid, then this Agreement shall terminate.

          In the event of any termination of this Agreement pursuant to the
preceding paragraph of this Section 10, neither the Company nor any Selling
Stockholder shall be liable to any Underwriter (except as provided in Sections 5
and 8 hereof) nor shall any Underwriter (other than an Underwriter who shall
have failed, otherwise than for some reason permitted under this Agreement, to
purchase the number of Firm Shares agreed by such Underwriter to be purchased
hereunder, which Underwriter shall remain liable to the Company, the Selling
Stockholders and the other Underwriters for damages, if any, resulting from such
default) be liable to the Company or any Selling Stockholder (except to the
extent provided in Sections 5 and 8 hereof).

          The term "Underwriter" in this Agreement shall include any person
substituted for an Underwriter under this Section 10.

                                      29


     11.  EFFECTIVE DATE OF THIS AGREEMENT AND TERMINATION.

          (a)  This Agreement shall become effective at the earlier of (i) 6:30
A.M., San Francisco time, on the first business day following the effective date
of the Registration Statement, or (ii) the time of the initial public offering
of any of the Shares by the Underwriters after the Registration Statement
becomes effective.  The time of the initial public offering shall mean the time
of the release by you, for publication, of the first newspaper advertisement
relating to the Shares, or the time at which the Shares are first generally
offered by the Underwriters to the public by letter, telephone, telegram or
telecopy, whichever shall first occur.  By giving notice as set forth in
Section 12 before the time this Agreement becomes effective, you, as
Representatives of the several Underwriters, or the Company, may prevent this
Agreement from becoming effective without liability of any party to any other
party, except as provided in Sections 4(i), 5 and 8 hereof.

          (b)  You, as Representatives of the several Underwriters, shall have
the right to terminate this Agreement by giving notice as hereinafter specified
at any time on or prior to the Closing Date or on or prior to any later date on
which Option Shares are to be purchased, as the case may be, (i) if the Company
or any Selling Stockholder shall have failed, refused or been unable to perform
any agreement on its part to be performed, or because any other condition of the
Underwriters' obligations hereunder required to be fulfilled is not fulfilled,
including, without limitation, any change in the condition (financial or
otherwise), earnings, operations, business or business prospects of the Company
and the Subsidiary, considered as one enterprise from that set forth in the
Registration Statement or Prospectus, which, in your sole judgment, is material
and adverse, or (ii) if additional material governmental restrictions, not in
force and effect on the date hereof, shall have been imposed upon trading in
securities generally or minimum or maximum prices shall have been generally
established on the New York Stock Exchange or on the American Stock Exchange or
in the over the counter market by the NASD, or trading in securities generally
shall have been suspended on either such exchange or in the over the counter
market by the NASD, or if a banking moratorium shall have been declared by
federal, New York or California authorities, or (iii) if the Company shall have
sustained a loss by strike, fire, flood, earthquake, accident or other calamity
of such character as to interfere materially with the conduct of the business
and operations of the Company regardless of whether or not such loss shall have
been insured, or (iv) if there shall have been a material adverse change in the
general political or economic conditions or financial markets as in your
reasonable judgment makes it inadvisable or impracticable to proceed with the
offering, sale and delivery of the Shares, or (v) if there shall have been an
outbreak or escalation of hostilities or of any other insurrection or armed
conflict or the declaration by the United States of a national emergency which,
in the reasonable opinion of the Representatives, makes it impracticable or
inadvisable to proceed with the public offering of the Shares as contemplated by
the Prospectus.  In the event of termination pursuant to subparagraph (i) above,
the Company shall remain obligated to pay costs and expenses pursuant to
Sections 4(i), 5 and 8 hereof.  Any termination pursuant to any of subparagraphs
(ii) through (v) above shall be without liability of any party to any other
party except as provided in Sections 5 and 8 hereof.  

          If you elect to prevent this Agreement from becoming effective or to
terminate this Agreement as provided in this Section 11, you shall promptly
notify the Company by telephone, telecopy or telegram, in each case confirmed by
letter.  If the Company shall elect to prevent this Agreement from becoming
effective, the Company shall promptly notify you by telephone, telecopy or
telegram, in each case, confirmed by letter.

     12.  NOTICES.  All notices or communications hereunder, except as herein
otherwise specifically provided, shall be in writing and if sent to you shall be
mailed, delivered, telegraphed (and confirmed by letter) or telecopied (and
confirmed by letter) to you c/o BancAmerica Robertson Stephens, 555 California
Street, Suite 2600, San Francisco, California 94104, telecopier number (415)
781-0278, Attention:  General Counsel; if sent to the Company, such notice shall
be mailed, delivered, telegraphed (and confirmed by letter) or telecopied (and
confirmed by letter) to 14001 North Dallas Parkway, Suite 1100, Dallas, Texas
75240, telecopier number (972) 458-2567, Attention: John D. Carreker, Chairman
and Chief Executive Officer; if sent to one or more of the Selling Stockholders,
such notice shall be sent 

                                      30


mailed, delivered, telegraphed (and confirmed by letter) or telecopied (and 
confirmed by letter) to the respective address for such Selling Stockholder 
or Selling Stockholders as set forth in their respective Selling Stockholder 
Agreements.

     13.  PARTIES.  This Agreement shall inure to the benefit of and be binding
upon the several Underwriters and the Company and the Selling Stockholders and
their respective executors, administrators, successors and assigns.  Nothing
expressed or mentioned in this Agreement is intended or shall be construed to
give any person or entity, other than the parties hereto and their respective
executors, administrators, successors and assigns, and the controlling persons
within the meaning of the Act or the Exchange Act, officers and directors
referred to in Section 8 hereof, any legal or equitable right, remedy or claim
in respect of this Agreement or any provisions herein contained, this Agreement
and all conditions and provisions hereof being intended to be and being for the
sole and exclusive benefit of the parties hereto and their respective executors,
administrators, successors and assigns and said controlling persons and said
officers and directors, and for the benefit of no other person or entity.  No
purchaser of any of the Shares from any Underwriter shall be construed a
successor or assign by reason merely of such purchase.

          In all dealings with the Company and the Selling Stockholders under
this Agreement, you shall act on behalf of each of the several Underwriters, and
the Company and the Selling Stockholders shall be entitled to act and rely upon
any statement, request, notice or agreement made or given by you jointly or by
BancAmerica Robertson Stephens on behalf of you.

     14.  APPLICABLE LAW.  THIS AGREEMENT SHALL BE GOVERNED BY, AND CONSTRUED IN
ACCORDANCE WITH, THE LAWS OF THE STATE OF CALIFORNIA.

     15.  COUNTERPARTS.  This Agreement may be signed in several counterparts,
each of which will constitute an original.


                               [Signature page follows]

                                      31


          If the foregoing correctly sets forth the understanding among the 
Company, the Selling Stockholders and the several Underwriters, please so 
indicate in the space provided below for that purpose, whereupon this letter 
shall constitute a binding agreement among the Company, the Selling 
Stockholders and the several Underwriters.

                                   Very truly yours,
         
                                   CARREKER-ANTINORI, INC.
         
         
                                   By                                  
                                     -------------------------------------------
         
                                   SELLING STOCKHOLDERS
         
         
                                   By                                          
                                     -------------------------------------------
                                        Attorney-in-Fact for the Selling 
                                        Stockholders named in Schedule B hereto


Accepted as of the date first above written:

BANCAMERICA ROBERTSON STEPHENS 
HAMBRECHT & QUIST LLC
LEHMAN BROTHERS INC.

On their behalf and on behalf of each of the
several Underwriters named in Schedule A hereto.


By  BANCAMERICA ROBERTSON STEPHENS 



By                                                      
  -------------------------------------------
                 Authorized Signatory




                                      SCHEDULE A



                                                             Number of
                                                            Firm Shares
                                                               To Be
        Underwriters                                         Purchased
- ---------------------------------                       --------------------
                                                        
                                                                 [     ]
BancAmerica Robertson Stephens  . . . . . . . . . . .           
                                                                 [     ]
Hambrecht & Quist LLC . . . . . . . . . . . . . . . .           
                                                                 [     ]
Lehman Brothers Inc.  . . . . . . . . . . . . . . . .           
                                                                 [     ]
[underwriter] . . . . . . . . . . . . . . . . . . . .           
                                                                 [     ]
     Total  . . . . . . . . . . . . . . . . . . . . . 
                                                                 -------
                                                                 -------





                                      SCHEDULE B




                                                            Number of
                                                            Company
                                                            Shares To
                                                            Be Sold
                                                         ----------------
                                                         
Carreker-Antinori, Inc....................................       [     ]2
                                                                 -------






                                                             Number of
                                                              Selling
                                                            Stockholder
                                                              Shares
Name of Selling Stockholder                                 To Be Sold
- --------------------------------------------------------------------------
                                                        
[Stockholder]  ........................................... 
[Stockholder]  ...........................................      [       ]
[Stockholder]  ...........................................      [       ]
[Stockholder]  ...........................................      [       ]3
[Stockholder]  ...........................................      [       ]
                                                               -----------
     Total ...............................................      [       ]
                                                               -----------
                                                               -----------


- -----------------------
(2)  In addition to the shares shown, Carreker-Antinori, Inc. also will include
62,033 shares of Common Stock for sale to the Underwriters upon exercise of the
over-allotment option in accordance with Section 7 of the Underwriting
Agreement.

(3) In addition to the shares shown, this Selling Stockholder also will include
702,967 shares of Common Stock for sale to the Underwriters upon exercise of the
over-allotment option in accordance with Section 7 of the Underwriting
Agreement.