R&G Draft of 10/20/99





                                __________ Shares

                          PROFESSIONAL DETAILING, INC.

                          COMMON STOCK, $.01 PAR VALUE





                             UNDERWRITING AGREEMENT






                                November __, 1999








                                                     November __, 1999



Morgan Stanley & Co. Incorporated
[Other Managers]
c/o Morgan Stanley & Co. Incorporated
     1585 Broadway
     New York, New York  10036

Dear Sirs and Mesdames:

         PROFESSIONAL DETAILING, INC., a Delaware corporation (the "Company"),
proposes to issue and sell to the several Underwriters named in Schedule II
hereto (the "Underwriters") and certain shareholders of the Company (the
"Selling Shareholders") named in Schedule I hereto severally propose to sell to
the several Underwriters an aggregate of __________ shares of the Common Stock,
$.01 par value of the Company (the "Firm Shares") of which __________ shares are
to be issued and sold by the Company and __________ shares are to be sold by the
Selling Shareholders, each Selling Shareholder selling the amount set forth
opposite such Selling Shareholder's name in Schedule I hereto.

         The Company also proposes to issue and sell to the several Underwriters
not more than an additional __________ shares of its Common Stock, $.01 par
value (the "Additional Shares") if and to the extent that you, as Managers of
the offering, shall have determined to exercise, on behalf of the Underwriters,
the right to purchase such shares of common stock granted to the Underwriters in
Section 3 hereof. [Note that the apportionment of the Additional Shares among
the Company and the Selling Shareholders has yet to be determined and additional
changes will need to be made to reflect such determination]. The Firm Shares and
the Additional Shares are hereinafter collectively referred to as the "Shares".
The shares of Common Stock, $.01 par value of the Company to be outstanding
after giving effect to the sales contemplated hereby are hereinafter referred to
as the "Common Stock." The Company and the Selling Shareholders are hereinafter
sometimes collectively referred to as the "Sellers".

         The Company has filed with the Securities and Exchange Commission (the
"Commission") a registration statement, including a prospectus, relating to the
Shares. The registration statement as amended at the time it becomes effective,
including the information (if any) deemed to be part of the registration
statement at the time of effectiveness pursuant to Rule 430A under the
Securities Act of 1933, as amended (the "Securities Act"), is hereinafter
referred to as the "Registration Statement"; the prospectus in the form first
used to confirm sales of Shares is hereinafter referred to as the "Prospectus".
If the Company has filed an abbreviated registration statement to register
additional shares of Common Stock pursuant to






Rule 462(b) under the Securities Act (the "Rule 462 Registration Statement"),
then any reference herein to the term "Registration Statement" shall be deemed
to include such Rule 462 Registration Statement (including, in the case of all
references to the Registration Statement and the Prospectus, documents
incorporated therein by reference).

         1. Representations and Warranties of the Company. The Company
represents and warrants to and agrees with each of the Underwriters that:

                  (a) The Registration Statement has become effective; no stop
         order suspending the effectiveness of the Registration Statement is in
         effect, and no proceedings for such purpose are pending before or
         threatened by the Commission.

                  (b) (i) Each document, if any, filed or to be filed pursuant
         to the Securities Exchange Act of 1934, as amended (the "Exchange Act")
         and incorporated by reference in the Prospectus complied or will comply
         when so filed in all material respects with the Exchange Act and the
         applicable rules and regulations of the Commission thereunder; (ii) the
         Registration Statement, when it became effective, did not contain and,
         as amended or supplemented, if applicable, 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 the statements therein not
         misleading, (iii) the Registration Statement and the Prospectus comply
         and, as amended or supplemented, if applicable, will comply in all
         material respects with the Securities Act and the applicable rules and
         regulations of the Commission thereunder and (iv) the Prospectus does
         not contain and, as amended or supplemented, if applicable, will not
         contain 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, except
         that the representations and warranties set forth in this paragraph
         1(b) do not apply to statements or omissions in the Registration
         Statement or the Prospectus based upon information relating to any
         Underwriter furnished to the Company in writing by such Underwriter
         through you expressly for use therein.

                  (c) The Company has been duly incorporated, is validly
         existing as a corporation in good standing under the laws of the
         jurisdiction of its incorporation, has the corporate power and
         authority to own its property and to conduct its business as described
         in the Prospectus and is duly qualified to transact business and is in
         good standing in each jurisdiction in which the conduct of its business
         or its ownership or leasing of property requires such qualification,
         except to the extent that the failure to be so qualified or be in good
         standing would not have a material adverse effect on the Company.

                  (d) Each subsidiary of the Company has been duly incorporated,
         is validly existing as a corporation in good standing under the laws of
         the jurisdiction of its incorporation, has the corporate power and
         authority to own its property and to conduct

                                       -2-





         its business as described in the Prospectus and is duly qualified to
         transact business and is in good standing in each jurisdiction in which
         the conduct of its business or its ownership or leasing of property
         requires such qualification, except to the extent that the failure to
         be so qualified or be in good standing would not have a material
         adverse effect on the Company and its subsidiaries, taken as a whole;
         all of the issued shares of capital stock of each subsidiary of the
         Company have been duly and validly authorized and issued, are fully
         paid and non-assessable and are owned directly by the Company, free and
         clear of all liens, encumbrances, equities or claims.


                  (e) This Agreement has been duly authorized, executed and
         delivered by the Company.

                  (f) The authorized capital stock of the Company conforms as to
         legal matters to the description thereof contained in the Prospectus.

                  (g) The shares of Common Stock outstanding prior to the
         issuance of the Shares to be sold by the Company have been duly
         authorized and are validly issued, fully paid and non-assessable.

                  (h) The Shares to be sold by the Company have been duly
         authorized and, when issued and delivered in accordance with the terms
         of this Agreement, will be validly issued, fully paid and
         non-assessable, and the issuance of such Shares will not be subject to
         any preemptive or similar rights.

                  (i) The execution and delivery by the Company of, and the
         performance by the Company of its obligations under, this Agreement
         will not contravene any provision of applicable law or the certificate
         of incorporation or by-laws of the Company or any agreement or other
         instrument binding upon the Company or any of its subsidiaries that is
         material to the Company and its subsidiaries, taken as a whole, or any
         judgment, order or decree of any governmental body, agency or court
         having jurisdiction over the Company or any subsidiary, and no consent,
         approval, authorization or order of, or qualification with, any
         governmental body or agency is required for the performance by the
         Company of its obligations under this Agreement, except such as may be
         required by the securities or Blue Sky laws of the various states in
         connection with the offer and sale of the Shares.

                  (j) There has not occurred any material adverse change, or any
         development involving a prospective material adverse change, in the
         condition, financial or otherwise, or in the earnings, business or
         operations of the Company and its subsidiaries, taken as a whole from
         that set forth in the Prospectus (exclusive of any amendments or
         supplements thereto subsequent to the date of this Agreement).


                                       -3-





                  (k) There are no legal or governmental proceedings pending or
         threatened to which the Company or any of its subsidiaries is a party
         or to which any of the properties of the Company or any of its
         subsidiaries is subject that are required to be described in the
         Registration Statement or the Prospectus and are not so described or
         any statutes, regulations, contracts or other documents that are
         required to be described in the Registration Statement or the
         Prospectus or to be filed as exhibits to the Registration Statement
         that are not described or filed as required.

                  (l) Each preliminary prospectus filed as part of the
         registration statement as originally filed or as part of any amendment
         thereto, or filed pursuant to Rule 424 under the Securities Act,
         complied when so filed in all material respects with the Securities Act
         and the applicable rules and regulations of the Commission thereunder.

                  (m) The Company is not and, after giving effect to the
         offering and sale of the Shares and the application of the proceeds
         thereof as described in the Prospectus, will not be required to
         register as an "investment company" as such term is defined in the
         Investment Company Act of 1940, as amended.

                  (n) The Company and its subsidiaries (i) are in compliance
         with any and all applicable foreign, federal, state and local laws and
         regulations relating to the protection of human health and safety, the
         environment or hazardous or toxic substances or wastes, pollutants or
         contaminants ("Environmental Laws"), (ii) have received all permits,
         licenses or other approvals required of them under applicable
         Environmental Laws to conduct their respective businesses and (iii) are
         in compliance with all terms and conditions of any such permit, license
         or approval, except where such noncompliance with Environmental Laws,
         failure to receive required permits, licenses or other approvals or
         failure to comply with the terms and conditions of such permits,
         licenses or approvals would not, singly or in the aggregate, have a
         material adverse effect on the Company and its subsidiaries, taken as a
         whole.

                  (o) There are no costs or liabilities associated with
         Environmental Laws (including, without limitation, any capital or
         operating expenditures required for clean-up, closure of properties or
         compliance with Environmental Laws or any permit, license or approval,
         any related constraints on operating activities and any potential
         liabilities to third parties) which would, singly or in the aggregate,
         have a material adverse effect on the Company and its subsidiaries,
         taken as a whole.

                  (p) Subsequent to the respective dates as of which information
         is given in the Registration Statement and the Prospectus, (i) the
         Company and its subsidiaries have not incurred any material liability
         or obligation, direct or contingent, nor entered into any material
         transaction not in the ordinary course of business; (ii) the Company
         has not purchased any of its outstanding capital stock, nor declared,
         paid or otherwise made any dividend or distribution of any kind on its
         capital stock other than ordinary and

                                       -4-





         customary dividends; and (iii) there has not been any material change
         in the capital stock, short-term debt or long-term debt of the Company
         and its subsidiaries, except in each case as described in the
         Prospectus.

                  (q) The Company and its subsidiaries have good and marketable
         title in fee simple to all real property and good and marketable title
         to all personal property owned by them which is material to the
         business of the Company and its subsidiaries, in each case free and
         clear of all liens, encumbrances and defects except such as are
         described in the Prospectus or such as do not materially affect the
         value of such property and do not interfere with the use made and
         proposed to be made of such property by the Company and its
         subsidiaries; and any real property and buildings held under lease by
         the Company and its subsidiaries are held by them under valid,
         subsisting and enforceable leases with such exceptions as are not
         material and do not interfere with the use made and proposed to be made
         of such property and buildings by the Company and its subsidiaries, in
         each case except as described in the Prospectus.

                  (r) The Company and its subsidiaries own or possess, or can
         acquire on reasonable terms, all material patents, patent rights,
         licenses, inventions, copyrights, know-how (including trade secrets and
         other unpatented and/or unpatentable proprietary or confidential
         information, systems or procedures), trademarks, service marks and
         trade names currently employed by them in connection with the business
         now operated by them and necessary for the conduct of its business as
         described in the Prospectus, and neither the Company nor any of its
         subsidiaries has received any notice of or has knowledge of, any
         infringement of or conflict with asserted rights of others with respect
         to any of the foregoing which, singly or in the aggregate, if the
         subject of an unfavorable decision, ruling or finding, could have a
         material adverse effect on the Company and its subsidiaries, taken as a
         whole.

                  (s) No material labor dispute with the employees of the
         Company exists, except as described in or contemplated by the
         Prospectus, or, to the knowledge of the Company, is imminent; and the
         Company is not aware of any existing, threatened or imminent labor
         disturbance by the employees of any of its principal suppliers,
         manufacturers or contractors that could result in any material adverse
         effect on the Company and its subsidiaries, taken as a whole.

                  (t) The Company and its subsidiaries are insured by insurers
         of recognized financial responsibility against such losses and risks
         and in such amounts as are prudent and customary in the businesses in
         which they are engaged; neither the Company nor any of its subsidiaries
         has been refused any insurance coverage sought or applied for; and
         neither the Company nor any of its subsidiaries 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

                                       -5-





         continue its business at a cost that could not have a material adverse
         effect on the Company and its subsidiaries, taken as a whole, except as
         described in the Prospectus.

                  (u) The Company and its subsidiaries possess all certificates,
         authorizations and permits issued by the appropriate federal, state or
         foreign regulatory authorities necessary to conduct their respective
         businesses, other than those which, if not so possessed, would not have
         a material adverse effect on the Company and its subsidiaries, taken as
         a whole, and neither the Company nor any of its subsidiaries has
         received any notice of proceedings relating to the revocation or
         modification of any such certificate, authorization or permit which,
         singly or in the aggregate, if the subject of an unfavorable decision,
         ruling or finding, could have a material adverse effect on the Company
         and its subsidiaries, taken as a whole, except as described in the
         Prospectus.

                  (v) The Company and each of its subsidiaries maintain a system
         of internal accounting controls sufficient to provide reasonable
         assurance 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 asset accountability; (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 the
         existing assets at reasonable intervals and appropriate action is taken
         with respect to any differences.

                  (w) The accountants who have certified or shall certify the
         financial statements filed or to be filed with the Commission as part
         of the Registration Statement and the Prospectus are independent
         accountants as required by the Securities Act. The consolidated
         financial statements of the Company (together with the related notes
         thereto) included in the Registration Statement present fairly the
         financial position and results of operations of the Company at the
         respective dates and for the respective periods to which they apply,
         subject to normal year-end adjustments. Such financial statements have
         been prepared in accordance with generally accepted accounting
         principles consistently applied throughout the periods involved except
         as otherwise stated therein. The pro forma financial information of the
         Company included in the Registration Statement has been prepared in
         accordance with the Commission's rules and guidelines with respect to
         pro forma financial statements, has been properly compiled on the bases
         described therein and, in the opinion of the Company, the assumptions
         used in the preparation thereof are reasonable and the adjustments used
         therein are appropriate to give effect to the transactions and
         circumstances referred to therein.

                  (x) The Company has reviewed its operations and that of its
         subsidiaries to evaluate the extent to which the business or operations
         of the Company or any of its

                                       -6-





         subsidiaries will be affected by the Year 2000 Problem (that is, any
         significant risk that computer hardware or software applications used
         by the Company and its subsidiaries will not, in the case of dates or
         time periods occurring after December 31, 1999, function at least as
         effectively as in the case of dates or time periods occurring prior to
         January 1, 2000); as a result of such review, (i) the Company has no
         reason to believe, and does not believe, that (A) there are any issues
         related to the Company's preparedness to address the Year 2000 Problem
         that are of a character required to be described or referred to in the
         Registration Statement or Prospectus which have not been accurately
         described in the Registration Statement or Prospectus and (B) the Year
         2000 Problem will have a material adverse effect on the condition,
         financial or otherwise, or on the earnings, business or operations of
         the Company and its subsidiaries, taken as a whole, or result in any
         material loss or interference with the business or operations of the
         Company and its subsidiaries, taken as a whole; and (ii) the Company
         reasonably believes, after due inquiry, that the suppliers, vendors,
         customers or other material third parties used or served by the Company
         and such subsidiaries are addressing or will address the Year 2000
         Problem in a timely manner, except to the extent that a failure to
         address the Year 2000 Problem by any supplier, vendor, customer or
         material third party would not have a material adverse effect on the
         condition, financial or otherwise, or on the earnings, business or
         operations of the Company and its subsidiaries, taken as a whole.

                  (y) To the Company's knowledge, no officer or director of the
         Company is in breach or violation of any employment agreement,
         non-competition agreement, confidentiality agreement, or other
         agreement restricting the nature or scope of employment to which such
         officer or director is a party, and, to the Company's knowledge, the
         conduct of the Company's business, as described in the Registration
         Statement and Prospectus, will not result in a breach or violation of
         any such agreement.

                  (z) There are no outstanding options to acquire shares of
         capital stock of the Company except as disclosed in the Registration
         Statement and the Prospectus and except as have been granted under the
         Company's 1998 stock option plan since June 30, 1999.

                  (aa) The Shares have been approved for quotation on the Nasdaq
         National Market, subject to official notice of issuance.

                  (bb) Except as described in the Prospectus, there are no
         contracts, agreements or understandings between the Company and any
         person granting such person the right to require the Company to file a
         registration statement under the Securities Act with respect to any
         securities of the Company or to require the Company to include such
         securities with the Shares registered pursuant to the Registration
         Statement. The Company has either included the securities of those
         persons who possess such rights or such persons have effectively waived
         them with respect to the offering of the Shares.


                                       -7-





         2. Representations and Warranties of the Selling Shareholders. Each of
the Selling Shareholders represents and warrants to and agrees with each of the
Underwriters that:

                  (a) This Agreement has been executed and delivered by or on
         behalf of such Selling Shareholder.

                  (b) The execution and delivery by such Selling Shareholder of,
         and the performance by such Selling Shareholder of its obligations
         under, this Agreement, the Custody Agreement signed by such Selling
         Shareholder and __________, as Custodian, relating to the deposit of
         the Shares to be sold by such Selling Shareholder (the "Custody
         Agreement") and the Power of Attorney appointing certain individuals as
         such Selling Shareholder's attorneys-in-fact to the extent set forth
         therein, relating to the transaction contemplated hereby and by the
         Registration Statement (the "Power of Attorney") will not contravene
         any provision of applicable law, or any agreement or other instrument
         binding upon such Selling Shareholder of any judgment, order or decree
         of any governmental body, agency or court having jurisdiction over such
         Selling Shareholder, and no consent, approval, authorization or order
         of, or qualification with, any governmental body or agency is required
         for the performance by such Selling Shareholder of its obligations
         under this Agreement or the Custody Agreement or Power of Attorney of
         such Selling Shareholder, except such as may be required by the
         securities or Blue Sky laws of the various states in connection with
         the offer and sale of the Shares.

                  (c) Such Selling Shareholder has, and on the Closing Date will
         have, valid title to the Shares to be sold by such Selling Shareholder
         and the legal right and power, and all authorization and approval
         required by law, to enter into this Agreement, the Custody Agreement
         and the Power of Attorney and to sell, transfer and deliver the Shares
         to be sold by such Selling Shareholder.

                  (d) The Custody Agreement and the Power of Attorney have been
         executed and delivered by such Selling Shareholder and are valid and
         binding agreements of such Selling Shareholder.

                  (e) Delivery of the Shares to be sold by such Selling
         Shareholder pursuant to this Agreement will pass title to such Shares
         free and clear of any security interests, claims, liens, equities and
         other encumbrances.

                  (f) If the Selling Shareholder is an officer or director of
         the Company (i) the Registration Statement, when it became effective,
         did not contain and, as amended or supplemented, if applicable, 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 the
         statements therein not misleading, (ii) the Registration Statement and
         the Prospectus comply and, as amended or supplemented, if applicable,
         will comply in all material

                                       -8-





         respects with the Securities Act and the applicable rules and
         regulations of the Commission thereunder and (iii) the Prospectus does
         not contain and, as amended or supplemented, if applicable, will not
         contain 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, except
         that the representations and warranties set forth in this paragraph
         2(f) do not apply to statements or omissions in the Registration
         Statement or the Prospectus based upon information relating to any
         Underwriter furnished to the Company in writing by such Underwriter
         through you expressly for use therein.

                  (g) For each Selling Shareholder other than those making a
         representation and warranty pursuant to paragraph 2(f) above, all
         information relating to such Selling Shareholder furnished to the
         Company in writing by or on behalf of such Selling Shareholder for use
         in the Registration Statement and the Prospectus is, and on the Closing
         Date will be, true, correct, and complete, and does not, and on the
         Closing Date will not, contain any untrue statement of a material fact
         or omit to state any material fact necessary to make such information
         not misleading.

         3. Agreements to Sell and Purchase. Each Seller, severally and not
jointly, hereby agrees to sell to the several Underwriters, and each
Underwriter, upon the basis of the representations and warranties herein
contained, but subject to the conditions hereinafter stated, agrees, severally
and not jointly, to purchase from such Seller at $__________ per share (the
"Purchase Price") the number of Firm Shares (subject to such adjustments to
eliminate fractional shares as you may determine) that bears the same proportion
to the number of Firm Shares to be sold by such Seller as the number of Firm
Shares set forth in Schedule II hereto opposite the name of such Underwriter
bears to the total number of Firm Shares.

         On the basis of the representations and warranties contained in this
Agreement, and subject to its terms and conditions, the Company agrees to sell
to the Underwriters the Additional Shares, and the Underwriters shall have a
one-time right to purchase, severally and not jointly, up to __________
Additional Shares at the Purchase Price. [Note that the apportionment of the
Additional Shares among the Company and the Selling Shareholders has yet to be
determined] If you, on behalf of the Underwriters, elect to exercise such
option, you shall so notify the Company in writing not later than 30 days after
the date of this Agreement, which notice shall specify the number of Additional
Shares to be purchased by the Underwriters and the date on which such shares are
to be purchased. Such date may be the same as the Closing Date (as defined
below) but not earlier than the Closing Date nor later than ten business days
after the date of such notice. Additional Shares may be purchased as provided in
Section 5 hereof solely for the purpose of covering over-allotments made in
connection with the offering of the Firm Shares. If any Additional Shares are to
be purchased, each Underwriter agrees, severally and not jointly, to purchase
the number of Additional Shares (subject to such adjustments to eliminate
fractional shares as you may determine) that bears the same proportion to the
total number of Additional Shares to be purchased as the

                                       -9-





number of Firm Shares set forth in Schedule II hereto opposite the name of such
Underwriter bears to the total number of Firm Shares.

         Each Seller hereby agrees that, without the prior written consent of
Morgan Stanley on behalf of the Underwriters, it will not, during the period
ending 90 days after the date of the Prospectus, (i) offer, pledge, sell,
contract to sell, sell any option or contract to purchase, purchase any option
or contract to sell, grant any option, right or warrant to purchase, lend, or
otherwise transfer or dispose of, directly or indirectly, any shares of Common
Stock or any securities convertible into or exercisable or exchangeable for
Common Stock or (ii) enter into any swap or other arrangement that transfers to
another, in whole or in part, any of the economic consequences of ownership of
the Common Stock, whether any such transaction described in clause (i) or (ii)
above is to be settled by delivery of Common Stock or such other securities, in
cash or otherwise. The foregoing sentence shall not apply to (A) the Shares to
be sold hereunder, (B) the issuance by the Company of shares of Common Stock
upon the exercise of an option or warrant or the conversion of a security
outstanding on the date hereof of which the Underwriters have been advised in
writing or (C) transactions by any person other than the Company relating to
shares of Common Stock or other securities acquired in open market transactions
after the completion of the offering of the Shares or (D) grants of options to
purchase shares of Common Stock pursuant to the Company's equity-based
compensation plan described in the Prospectus, provided that such options are
not exercisable within such 90 day period. In addition, each Selling Shareholder
agrees that, without the prior written consent of Morgan Stanley on behalf of
the Underwriters, it will not, during the period ending 90 days after the date
of the Prospectus, make any demand for, or exercise any right with respect to,
the registration of any shares of Common Stock or any security convertible into
or exercisable or exchangeable for Common Stock.

         4. Terms of Public Offering. The Sellers are advised by you that the
Underwriters propose to make a public offering of their respective portions of
the Shares as soon after the Registration Statement and this Agreement have
become effective as in your judgment is advisable. The Sellers are further
advised by you that the Shares are to be offered to the public initially at
$__________ a share (the "Public Offering Price") and to certain dealers
selected by you at a price that represents a concession not in excess of
$_________ a share under the Public Offering Price, and that any Underwriter may
allow, and such dealers may reallow, a concession, not in excess of $__________
a share, to any Underwriter or to certain other dealers.

         5. Payment and Delivery. Payment for the Firm Shares to be sold by each
Seller shall be made to such Seller in Federal or other funds immediately
available in New York City against delivery of such Firm Shares for the
respective accounts of the several Underwriters at 10:00 a.m., New York City
time, on November __, 1999, or at such other time on the same or such other
date, not later than November __, 1999, as shall be designated in writing by
you. The time and date of such payment are hereinafter referred to as the
"Closing Date". The

                                      -10-





Closing of the offering and sale of the Firm Shares will be held at the Offices
of Ropes & Gray, 885 Third Avenue, New York, NY 10022.

         Payment for any Additional Shares shall be made [to the Company] in
Federal or other funds immediately available in New York City against delivery
of such Additional Shares for the respective accounts of the several
Underwriters at 10:00 a.m., New York City time, on the date specified in the
notice described in Section 3 or at such other time on the same or on such other
date, in any event not later than December __, 1999, as shall be designated in
writing by you. The time and date of such payment are hereinafter referred to as
the "Option Closing Date." The Closing of the offering and sale of the
Additional Shares will be held at the Offices of Ropes & Gray, 885 Third Avenue,
New York, NY 10022.

         Certificates for the Firm Shares and Additional Shares shall be in
definitive form and registered in such names and in such denominations as you
shall request in writing not later than one full business day prior to the
Closing Date or the Option Closing Date, as the case may be. The certificates
evidencing the Firm Shares and Additional Shares shall be delivered to you on
the Closing Date or the Option Closing Date, as the case may be, for the
respective accounts of the several Underwriters, with any transfer taxes payable
in connection with the transfer of the Shares to the Underwriters duly paid,
against payment of the Purchase Price therefor.

         6. Conditions to the Underwriters' Obligations. The obligations of the
Sellers to sell the Shares to the Underwriters and the several obligations of
the Underwriters to purchase and pay for the Shares on the Closing Date are
subject to the condition that the Registration Statement shall have become
effective not later than [__________] (New York City time) on the date hereof.

         The several obligations of the Underwriters are subject to the
following further conditions:

                  (a) Subsequent to the execution and delivery of this Agreement
         and prior to the Closing Date:

                           (i) there shall not have occurred any downgrading,
                  nor shall any notice have been given of any intended or
                  potential downgrading or of any review for a possible change
                  that does not indicate the direction of the possible change,
                  in the rating accorded any of the Company's securities by any
                  "nationally recognized statistical rating organization," as
                  such term is defined for purposes of Rule 436(g)(2) under the
                  Securities Act; and

                           (ii) there shall not have occurred any change, or any
                  development involving a prospective change, in the condition,
                  financial or otherwise, or in the earnings, business or
                  operations of the Company and its subsidiaries, taken

                                      -11-





                  as a whole, from that set forth in the Prospectus (exclusive
                  of any amendments or supplements thereto subsequent to the
                  date of this Agreement) that, in your judgment, is material
                  and adverse and that makes it, in your judgment, impracticable
                  to market the Shares on the terms and in the manner
                  contemplated in the Prospectus.

                  (b) The Underwriters shall have received on the Closing Date a
         certificate, dated the Closing Date and signed by an executive officer
         of the Company, to the effect set forth in Section 6(a)(i) above and to
         the effect that the representations and warranties of the Company
         contained in this Agreement are true and correct as of the Closing Date
         and that the Company has complied with all of the agreements and
         satisfied all of the conditions on its part to be performed or
         satisfied hereunder on or before the Closing Date.

         The officer signing and delivering such certificate may rely upon the
best of his or her knowledge as to proceedings threatened.

                  (c) The Underwriters shall have received on the Closing Date
         an opinion of Morse, Zelnick, Rose & Lander, L.L.P., outside counsel
         for the Company, dated the Closing Date, to the effect that:

                           (i) the Company has been duly incorporated, is
                  validly existing as a corporation in good standing under the
                  laws of the jurisdiction of its incorporation, has the
                  corporate power and authority to own its property and to
                  conduct its business as described in the Prospectus and is
                  duly qualified to transact business and is in good standing in
                  each jurisdiction in which the conduct of its business or its
                  ownership or leasing of property requires such qualification,
                  except to the extent that the failure to be so qualified or be
                  in good standing would not have a material adverse effect on
                  the Company and its subsidiaries, taken as a whole;

                           (ii) each subsidiary of the Company has been duly
                  incorporated, is validly existing as a corporation in good
                  standing under the laws of the jurisdiction of its
                  incorporation, has the corporate power and authority to own
                  its property and to conduct its business as described in the
                  Prospectus and is duly qualified to transact business and is
                  in good standing in each jurisdiction in which the conduct of
                  its business or its ownership or leasing of property requires
                  such qualification, except to the extent that the failure to
                  be so qualified or be in good standing would not have a
                  material adverse effect on the Company and its subsidiaries,
                  taken as a whole;

                           (iii) the authorized capital stock of the Company
                  conforms as to legal matters to the description thereof
                  contained in the Prospectus;

                                      -12-






                           (iv) the shares of Common Stock outstanding prior to
                  the issuance of the Shares to be sold by the Company have been
                  duly authorized and are validly issued, fully paid and
                  non-assessable;

                           (v) all of the issued shares of capital stock of each
                  subsidiary of the Company have been duly and validly
                  authorized and issued, are fully paid and non-assessable and
                  are owned directly by the Company, and, to such counsel's
                  knowledge, are free and clear of all liens, encumbrances,
                  equities or claims;

                           (vi) the Shares to be sold by the Company have been
                  duly authorized and, when issued and delivered in accordance
                  with the terms of this Agreement, will be validly issued,
                  fully paid and non-assessable, and the issuance of such Shares
                  will not be subject to any preemptive or similar rights;

                           (vii) this Agreement has been duly authorized,
                  executed and delivered by the Company;

                           (viii) the execution and delivery by the Company of,
                  and the performance by the Company of its obligations under,
                  this Agreement will not contravene the certificate of
                  incorporation or by-laws of the Company or, to the best of
                  such counsel's knowledge, any provision of applicable law, any
                  agreement or other instrument binding upon the Company or any
                  of its subsidiaries that is material to the Company and its
                  subsidiaries, taken as a whole, or, to the best of such
                  counsel's knowledge, any judgment, order or decree of any
                  governmental body, agency or court having jurisdiction over
                  the Company or any subsidiary, and no consent, approval,
                  authorization or order of, or qualification with, any
                  governmental body or agency is required for the performance by
                  the Company of its obligations under this Agreement, except
                  such as may be required by the securities or Blue Sky laws of
                  the various states in connection with the offer and sale of
                  the Shares by the Underwriters as to which such counsel need
                  express no opinion;

                           (ix) the statements (A) in the Prospectus under the
                  captions "Business Contracts and Clients," "Description of
                  Capital Stock" and "Underwriters" and (B) in the Registration
                  Statement in Item 15, in each case insofar as such statements
                  constitute summaries of the legal matters, documents or
                  proceedings referred to therein, fairly present the
                  information called for with respect to such legal matters,
                  documents and proceedings and fairly summarize the matters
                  referred to therein;

                           (x) after due inquiry, such counsel does not know of
                  any legal or governmental proceedings pending or threatened to
                  which the Company or any

                                      -13-





                  of its subsidiaries is a party or to which any of the
                  properties of the Company or any of its subsidiaries is
                  subject that are required to be described in the Registration
                  Statement or the Prospectus and are not so described or of any
                  statutes, regulations, contracts or other documents that are
                  required to be described in the Registration Statement or the
                  Prospectus or to be filed as exhibits to the Registration
                  Statement that are not described or filed as required;

                           (xi) the Company is not and, after giving effect to
                  the offering and sale of the Shares and the application of the
                  proceeds thereof as described in the Prospectus, will not be
                  required to register as an "investment company" as such term
                  is defined in the Investment Company Act of 1940, as amended;

                           (xii) to the best of such counsel's knowledge, the
                  Company and its subsidiaries (A) are in compliance with any
                  and all applicable Environmental Laws, (B) have received all
                  permits, licenses or other approvals required of it under
                  applicable Environmental Laws to conduct their respective
                  business and (C) are in compliance with all terms and
                  conditions of any such permit, license or approval, except
                  where such noncompliance with Environmental Laws, failure to
                  receive required permits, licenses or other approvals or
                  failure to comply with the terms and conditions of such
                  permits, licenses or approvals would not, singly or in the
                  aggregate, have a material adverse effect on the Company and
                  its subsidiaries, taken as a whole; and

                           (xiii) such counsel (A) is of the opinion that each
                  document filed pursuant to the Exchange Act and incorporated
                  by reference in the Registration Statement and the Prospectus
                  (except for financial statements and schedules as to which
                  such counsel need not express any opinion) complied when so
                  filed as to form in all material respects with the Exchange
                  Act and the applicable rules and regulations of the Commission
                  thereunder, (B) is of the opinion that the Registration
                  Statement and Prospectus (except for financial statements and
                  schedules and other financial and statistical data included
                  therein as to which such counsel need not express any opinion)
                  comply as to form in all material respects with the Securities
                  Act and the applicable rules and regulations of the Commission
                  thereunder, (C) has no reason to believe that (except for
                  financial statements and schedules and other financial and
                  statistical data as to which such counsel need not express any
                  belief) the Registration Statement and the prospectus included
                  therein at the time the Registration Statement became
                  effective 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 and
                  (D) has no reason to believe that (except for financial
                  statements and schedules and other financial and statistical
                  data as to which such

                                      -14-





                  counsel need not express any belief) the Prospectus contains
                  any untrue statement of a material fact or omits to state a
                  material fact necessary in order to make the statements
                  therein, in the light of the circumstances under which they
                  were made, not misleading.

                  (d) The Underwriters shall have received on the Closing Date
         an opinion of Morse, Zelnick, Rose & Lander, L.L.P., counsel for the
         Selling Shareholders, dated the Closing Date, to the effect that:

                           (i) this Agreement has been duly executed and
                  delivered by or on behalf of each of the Selling Shareholders;

                           (ii) the execution and delivery by each Selling
                  Shareholder of, and the performance by such Selling
                  Shareholder of its obligations under, this Agreement and the
                  Custody Agreement and Power of Attorney of such Selling
                  Shareholder will not contravene any provision of applicable
                  law, or, to the best of such counsel's knowledge, any
                  agreement or other instrument binding upon such Selling
                  Shareholder or, to the best of such counsel's knowledge, any
                  judgment, order or decree of any governmental body, agency or
                  court having jurisdiction over such Selling Shareholder of its
                  obligations under this Agreement or the Custody Agreement or
                  Power of Attorney of such Selling Shareholder, and no consent,
                  approval, authorization or order of, or qualification with,
                  any governmental body or agency is required for the
                  performance by such Selling Shareholder of its obligations
                  under this Agreement or the Custody Agreement or Power of
                  Attorney of such Selling Shareholder, except such as may be
                  required by the securities or Blue Sky laws of the various
                  states in connection with offer and sale of the Shares;

                           (iii) each of the Selling Shareholders is the record
                  owner and, to such counsel's knowledge, the beneficial owner,
                  of the Shares to be sold by such Selling Shareholder and the
                  legal right and power, and all authorization and approval
                  required by law, to enter into this Agreement and the Custody
                  Agreement and Power of Attorney of such Selling Shareholder
                  and to sell, transfer and deliver the Shares to be sold by
                  such Selling Shareholder;

                           (iv) the Custody Agreement and the Power of Attorney
                  of each Selling Shareholder have been executed and delivered
                  by such Selling Shareholder and are valid and binding
                  agreements of such Selling Shareholder;

                           (v) delivery of the Shares to be sold by each Selling
                  Shareholder pursuant to this Agreement will pass title to such
                  Shares free and clear of any security interests, claims,
                  liens, equities and other encumbrances; and


                                      -15-





                           (vi) such counsel (A) is of the opinion that the
                  Registration Statement and Prospectus (except for financial
                  statements and schedules and other financial and statistical
                  data included therein as to which such counsel need not
                  express any opinion) comply as to form in all material
                  respects with the Securities Act and the applicable rules and
                  regulations of the Commission thereunder, (B) has no reason to
                  believe that (except for financial statements and schedules
                  and other financial and statistical data as to which such
                  counsel need not express any belief) the Registration
                  Statement and the prospectus included therein at the time the
                  Registration Statement became effective 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 and (C) has no reason to
                  believe that (except for financial statements and schedules
                  and other financial and statistical data as to which such
                  counsel need not express any belief) the Prospectus contains
                  any untrue statement of a material fact or omits to state a
                  material fact necessary in order to make the statements
                  therein, in the light of the circumstances under which they
                  were made, not misleading.

                  (e) The Underwriters shall have received on the Closing Date
         an opinion of Farkas & Manelli, P.L.L.C., regulatory counsel to the
         Company, dated the Closing Date to the effect that:

                           (i) The statements under the captions ["Risk
                  Factors-The Healthcare Industry ..." and "Business--Government
                  and Industry Regulation"] in the Prospectus, insofar as such
                  statements constitute a summary of documents referred to
                  therein or matters of law, fairly summarize in all material
                  respects the information called for with respect to such
                  documents and matters.

                  (f) The Underwriters shall have received on the Closing Date
         an opinion of Ropes & Gray, counsel for the Underwriters, dated the
         Closing Date, covering the matters referred to in Sections 6(c)(vi),
         6(c)(vii), 6(c)(ix) (but only as to the statements in the Prospectus
         under "Description of Capital Stock" and "Underwriters") and clauses
         (B), (C) and (D) of Section 6(c)(xiii).

         With respect to subparagraph (xiii) of paragraph 6(c) above, Morse,
Zelnick, Rose & Lander, L.L.P. and Ropes & Gray may state that their opinion and
belief are based upon their participation in the preparation of the Registration
Statement and Prospectus and any amendments or supplements thereto and documents
incorporated therein by reference and review and discussion of the contents
thereof, but are without independent check or verification, except as specified.
With respect to clauses (B), (C) and (D) of subparagraph (xii) of paragraph (c)
above, Ropes & Gray may state that their opinion and belief are based upon their
participation in the preparation of the Registration Statement and Prospectus
and any amendments or supplements thereto (other than the documents incorporated
by reference) and

                                      -16-





review and discussion of the contents thereof (including documents incorporated
by reference), but are without independent check or verification except as
specified.

         The opinion of Morse, Zelnick, Rose & Lander, L.L.P. and Farkas &
Manelli, P.L.L.C. described in paragraphs 6(c) and 6(d), respectively, shall be
rendered to the Underwriters at the request of the Company or one or more of the
Selling Shareholders, as the case may be, and shall so state therein.

                  (g) The Underwriters shall have received, on each of the date
         hereof and the Closing Date, a letter dated the date hereof or the
         Closing Date, as the case may be, in form and substance satisfactory to
         the Underwriters, from Coopers & Lybrand, L.L.P. independent public
         accountants, containing statements and information of the type
         ordinarily included in accountants' "comfort letters" to underwriters
         with respect to the financial statements and certain financial
         information contained in or incorporated by reference into the
         Registration Statement and the Prospectus; provided that the letter
         delivered on the Closing Date shall use a "cut-off date" not earlier
         than the date hereof.

                  (h) The "lock-up" agreements, each substantially in the form
         of Exhibit A hereto, between you and certain shareholders, officers and
         directors of the Company relating to sales and certain other
         dispositions of shares of Common Stock or certain other securities,
         delivered to you on or before the date hereof, shall be in full force
         and effect on the Closing Date.

                  (i) The several obligations of the Underwriters to purchase
         Additional Shares hereunder are subject to the delivery to you on the
         Option Closing Date of such documents as you may reasonably request
         with respect to the good standing of the Company, the due authorization
         and issuance of the Additional Shares and other matters related to the
         issuance of the Additional Shares.

                  (j) The Shares shall have been approved for quotation through
         the Nasdaq National Market.

         7. Covenants of the Company. In further consideration of the agreements
of the Underwriters herein contained, the Company covenants with each
Underwriter as follows:

                  (a) To furnish you, without charge, [_____] signed copies of
         the Registration Statement (including exhibits thereto and documents
         incorporated by reference) and for delivery to each other Underwriter a
         copy of the Registration Statement (without exhibits thereto but
         including document incorporated by reference) and to furnish to you in
         New York City, without charge, prior to 10:00 A.M. local time on the
         business day next succeeding the date of this Agreement and during the
         period mentioned in paragraph 7(c) below, as many copies of the
         Prospectus, and documents incorporated therein by reference, and any
         supplements and amendments thereto as you may

                                      -17-





         reasonably request. The terms "supplement" and "amendment" or "amend"
         as used in this Agreement shall include all documents subsequently
         filed by the Company with the Commission pursuant to the Exchange Act
         that are deemed to be incorporated by reference in the Prospectus.

                  (b) Before amending or supplementing the Registration
         Statement or the Prospectus, to furnish to you a copy of each such
         proposed amendment or supplement and not to file any such proposed
         amendment or supplement to which you reasonably object, and to file
         with the Commission within the applicable period specified in Rule
         424(b) under the Securities Act any prospectus required to be filed
         pursuant to such Rule.

                  (c) If, during such period after the first date of the public
         offering of the Shares as in the opinion of counsel for the
         Underwriters the Prospectus is required by law to be delivered in
         connection with sales by an Underwriter or dealer, any event shall
         occur or condition exist as a result of which it is necessary to amend
         or supplement the Prospectus in order to make the statements therein,
         in the light of the circumstances when the Prospectus is delivered to a
         purchaser, not misleading, or if, in the opinion of counsel for the
         Underwriters, it is necessary to amend or supplement the Prospectus to
         comply with applicable law, forthwith to prepare, file with the
         Commission and furnish, at its own expense, to the Underwriters and to
         the dealers (whose names and addresses you will furnish to the Company)
         to which Shares may have been sold by you on behalf of the Underwriters
         and to any other dealers upon request, either amendments or supplements
         to the Prospectus so that the statements in the Prospectus as so
         amended or supplemented will not, in the light of the circumstances
         when the Prospectus is delivered to a purchaser, be misleading or so
         that the Prospectus, as amended or supplemented, will comply with law.

                  (d) To endeavor to qualify the Shares for offer and sale under
         the securities or Blue Sky laws of such jurisdictions as you shall
         reasonably request.

                  (e) To make generally available to the Company's security
         holders and to you as soon as practicable an earning statement covering
         the twelve-month period ending December 31, 2000 that satisfies the
         provisions of Section 11(a) of the Securities Act and the rules and
         regulations of the Commission thereunder.

         8.  Expenses.

                  (a) Whether or not the transactions contemplated in this
         Agreement are consummated or this Agreement is terminated, the Sellers
         agree to pay or cause to be paid all expenses incident to the
         performance of obligations under this Agreement, including: (i) the
         fees, disbursements and expenses of the Company's counsel, the
         Company's accountants and counsel for the Selling Shareholders in
         connection with the

                                      -18-





         registration and delivery of the Shares under the Securities Act and
         all other fees or expenses in connection with the preparation and
         filing of the Registration Statement, any preliminary prospectus, the
         Prospectus and amendments and supplements to any of the foregoing,
         including all printing costs associated therewith, and the mailing and
         delivering of copies thereof to the Underwriters and dealers, in the
         quantities hereinabove specified, (ii) all costs and expenses related
         to the transfer and delivery of the Shares to the Underwriters,
         including any transfer or other taxes payable thereon, (iii) the cost
         of printing or producing any Blue Sky or Legal Investment memorandum in
         connection with the offer and sale of the Shares under state securities
         laws and all expenses in connection with the qualification of the
         Shares for offer and sale under state securities laws as provided in
         paragraph 7(d) hereof, including filing fees and the reasonable fees
         and disbursements of counsel for the Underwriters in connection with
         such qualification and in connection with the Blue Sky or Legal
         Investment memorandum, (iv) all filing fees and the reasonable fees and
         disbursements of counsel to the Underwriters incurred in connection
         with the review and qualification of the offering of the Shares by the
         National Association of Securities Dealers, Inc., (v) the cost of
         printing certificates representing the Shares, (vi) the costs and
         charges of any transfer agent, registrar or depositary, (vii) the costs
         and expenses of the Company relating to investor presentations on any
         "road show" undertaken in connection with the marketing of the offering
         of the Shares, including, without limitation, expenses associated with
         the production of road show slides and graphics, fees and expenses of
         any consultants engaged in connection with the road show presentations
         with the prior approval of the Company, travel and lodging expenses of
         the representatives and officers of the Company and any such
         consultants, and the cost of any aircraft chartered in connection with
         the road show, and (viii) all other costs and expenses incident to the
         performance of the obligations of the Company hereunder for which
         provision is not otherwise made in this Section. It is understood,
         however, that except as provided in this Section, Section 9 entitled
         "Indemnity and Contribution", and the last paragraph of Section 11
         below, the Underwriters will pay all of their costs and expenses,
         including fees and disbursements of their counsel, stock transfer taxes
         payable on resale of any of the Shares by them and any advertising
         expenses connected with any offers they may make.

         The provisions of this Section shall not supersede or otherwise affect
any agreement that the Sellers may otherwise have for the allocation of such
expenses among themselves.

         9.  Indemnity and Contribution.

                  (a) The Company and each Selling Shareholder who is a director
         or officer of the Company (as designated with an asterisk "*" on
         Schedule I) on the date of this Agreement, jointly and severally, agree
         to indemnify and hold harmless each Underwriter and each person, if
         any, who controls any Underwriter within the meaning of either Section
         15 of the Securities Act or Section 20 of the Exchange Act, from and

                                      -19-





         against any and all losses, claims, damages and liabilities (including,
         without limitation, any legal or other expenses reasonably incurred in
         connection with defending or investigating any such action or claim)
         caused by any untrue statement or alleged untrue statement of a
         material fact contained in the Registration Statement or any amendment
         thereof, any preliminary prospectus or the Prospectus (as amended or
         supplemented if the Company shall have furnished any amendments or
         supplements thereto), or caused by any omission or alleged omission to
         state therein a material fact required to be stated therein or
         necessary to make the statements therein not misleading, except insofar
         as such losses, claims, damages or liabilities are caused by any such
         untrue statement or omission or alleged untrue statement or omission
         based upon information relating to any Underwriter furnished to the
         Company in writing by such Underwriter through you expressly for use
         therein;

                  (b) Each Selling Shareholder severally agrees to indemnify and
         hold harmless (i) each Underwriter and each person, if any, who
         controls any Underwriter within the meaning of either Section 15 of the
         Securities Act or Section 20 of the Exchange Act, and (ii) the Company,
         its directors, its officers who sign the Registration Statement, and
         each person, if any, who controls the Company within the meaning of
         either Section 15 of the Securities Act or Section 20 of the Exchange
         Act, from and against any and all losses, claims, damages and
         liabilities (including, without limitation, any legal or other expenses
         reasonably incurred in connection with defending or investigating any
         such action or claim) (i) caused by any untrue statement or alleged
         untrue statement of a material fact contained in the Registration
         Statement or any amendment thereof, any preliminary prospectus or the
         Prospectus (as amended or supplemented if the Company shall have
         furnished any amendments or supplement thereto), or caused by any
         omission or alleged omission to state therein a material fact required
         to be stated therein or necessary to make the statements therein not
         misleading, but only with reference to information relating to such
         Selling Shareholder furnished in writing by or on behalf of such
         Selling Shareholder expressly for use in the Registration Statement,
         any preliminary prospectus, the Prospectus or any amendments or
         supplements thereto.

                  (c) Each Underwriter agrees, severally and not jointly, to
         indemnify and hold harmless the Company, the Selling Shareholders, the
         directors of the Company, the officers of the Company who sign the
         Registration Statement and each person, if any, who controls the
         Company or any Selling Shareholder within the meaning of either Section
         15 of the Securities Act or Section 20 of the Exchange Act from and
         against any and all losses, claims, damages and liabilities (including,
         without limitation, any legal or other expenses reasonably incurred in
         connection with defending or investigating any such action or claim)
         caused by any untrue statement or alleged untrue statement of a
         material fact contained in the Registration Statement or any amendment
         thereof, any preliminary prospectus or the Prospectus (as amended or
         supplemented if the Company shall have furnished any amendments or
         supplements thereto), or caused

                                      -20-





         by any omission or alleged omission to state therein a material fact
         required to be stated therein or necessary to make the statements
         therein not misleading, but only with reference to information relating
         to such Underwriter furnished to the Company in writing by such
         Underwriter through you expressly for use in the Registration
         Statement, any preliminary prospectus, the Prospectus or any amendments
         or supplements thereto.

                  (d) The aggregate liability of any Selling Shareholder under
         the representations and warranties contained in Section 2(g) hereof and
         for indemnification under Section 9 shall in no event exceed the net
         proceeds received by such Selling Shareholder from the Underwriters in
         the offering of the Shares.

                  (e) In case any proceeding (including any governmental
         investigation) shall be instituted involving any person in respect of
         which indemnity may be sought pursuant to Section 9(a), 9(b) or 9(c),
         such person (the "indemnified party") shall promptly notify the person
         against whom such indemnity may be sought (the "indemnifying party") in
         writing and the indemnifying party, upon request of the indemnified
         party, shall retain counsel reasonably satisfactory to the indemnified
         party to represent the indemnified party and any others the
         indemnifying party may designate in such proceeding and shall pay the
         fees and disbursements of such counsel related to such proceeding. In
         any such proceeding, any indemnified party shall have the right to
         retain its own counsel, but the fees and expenses of such counsel shall
         be at the expense of such indemnified party unless (i) the indemnifying
         party and the indemnified party shall have mutually agreed to the
         retention of such counsel or (ii) the named parties to any such
         proceeding (including any impleaded parties) include both the
         indemnifying party and the indemnified party and representation of both
         parties by the same counsel would be inappropriate due to actual or
         potential differing interests between them. It is understood that the
         indemnifying party shall not, in respect of the legal expenses of any
         indemnified party in connection with any proceeding or related
         proceedings in the same jurisdiction, be liable for (i) the fees and
         expenses of more than one separate firm (in addition to any local
         counsel) for all Underwriters and all persons, if any, who control any
         Underwriter within the meaning of either Section 15 of the Securities
         Act or Section 20 of the Exchange Act, (ii) the fees and expenses of
         more than one separate firm (in addition to any local counsel) for the
         Company, its directors, its officers who sign the Registration
         Statement and each person, if any, who controls the Company within the
         meaning of either such Section and (iii) the fees and expenses of more
         than one separate firm (in addition to any local counsel) for all
         Selling Shareholders and all persons, if any, who control any Selling
         Shareholder within the meaning of either such Section, and that all
         such fees and expenses shall be reimbursed as they are incurred. In the
         case of any such separate firm for the Underwriters and such control
         persons of any Underwriters, such firm shall be designated in writing
         by Morgan Stanley. In the case of any such separate firm for the
         Company, and such directors, officers and control persons of the
         Company, such firm shall be designated in writing by the

                                      -21-





         Company. In the case of any such separate firm for the Selling
         Shareholders and such control persons of any Selling Shareholders, such
         firm shall be designated in writing by the persons named as
         attorneys-in-fact for the Selling Shareholders under the Powers of
         Attorney. The indemnifying party shall not be liable for any settlement
         of any proceeding effected without its written consent, but if settled
         with such consent or if there be a final judgment for the plaintiff,
         the indemnifying party agrees to indemnify the indemnified party from
         and against any loss or liability by reason of such settlement or
         judgment. Notwithstanding the foregoing sentence, if at any time an
         indemnified party shall have requested an indemnifying party to
         reimburse the indemnified party for fees and expenses of counsel as
         contemplated by the second and third sentences of this paragraph, the
         indemnifying party agrees that it shall be liable for any settlement of
         any proceeding effected without its written consent if (i) such
         settlement is entered into more than 30 days after receipt by such
         indemnifying party of the aforesaid request and (ii) such indemnifying
         party shall not have reimbursed the indemnified party in accordance
         with such request prior to the date of such settlement. 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 indemnity could have been sought hereunder by such indemnified
         party, unless such settlement includes an unconditional release of such
         indemnified party from all liability on claims that are the subject
         matter of such proceeding.

                  (f) To the extent the indemnification provided for in Section
         9(a), 9(b) or 9(c) is unavailable to an indemnified party or
         insufficient in respect of any losses, claims, damages or liabilities
         referred to therein, then each indemnifying party under such paragraph,
         in lieu of indemnifying such indemnified party thereunder, shall
         contribute to the amount paid or payable by such indemnified party as a
         result of such losses, claims, damages or liabilities (i) in such
         proportion as is appropriate to reflect the relative benefits received
         by the indemnifying party or parties on the one hand and the
         indemnified party or parties on the other hand from the offering of the
         Shares or (ii) if the allocation provided by clause 9(f)(i) above is
         not permitted by applicable law, in such proportion as is appropriate
         to reflect not only the relative benefits referred to in clause 9(f)(i)
         above but also the relative fault of the indemnifying party or parties
         on the one hand and of the indemnified party or parties on the other
         hand in connection with the statements or omissions that resulted in
         such losses, claims, damages or liabilities, as well as any other
         relevant equitable considerations. The relative benefits received by
         the Sellers on the one hand and the Underwriters on the other hand in
         connection with the offering of the Shares shall be deemed to be in the
         same respective proportions as the net proceeds from the offering of
         the Shares (before deducting expenses) received by each Seller and the
         total underwriting discounts and commissions received by the
         Underwriters, in each case as set forth in the table on the cover of
         the Prospectus, bear to the aggregate Public Offering Price of the
         Shares. The relative fault of the Sellers on the one hand and the
         Underwriters on the other hand shall be determined by reference

                                      -22-





         to, among other things, whether the untrue or alleged untrue statement
         of a material fact or the omission or alleged omission to state a
         material fact relates to information supplied by the Sellers or by the
         Underwriters and the parties' relative intent, knowledge, access to
         information and opportunity to correct or prevent such statement or
         omission. The Underwriters' respective obligations to contribute
         pursuant to this Section 9 are several in proportion to the respective
         number of Shares they have purchased hereunder, and not joint.

                  (g) The Sellers and the Underwriters agree that it would not
         be just or equitable if contribution pursuant to this Section 9 were
         determined by pro rata allocation (even if the Underwriters were
         treated as one entity for such purpose) or by any other method of
         allocation that does not take account of the equitable considerations
         referred to in Section 9(f). The amount paid or payable by an
         indemnified party as a result of the losses, claims, damages and
         liabilities referred to in the immediately preceding paragraph shall be
         deemed to include, subject to the limitations set forth above, any
         legal or other expenses reasonably incurred by such indemnified party
         in connection with investigating or defending any such action or claim.
         Notwithstanding the provisions of this Section 9, no Underwriter shall
         be required to contribute any amount in excess of the amount by which
         the total price at which the Shares underwritten by it and distributed
         to the public were offered to the public exceeds the amount of any
         damages that such Underwriter has otherwise been required to pay by
         reason of such untrue or alleged untrue statement or omission or
         alleged omission. No person guilty of fraudulent misrepresentation
         (within the meaning of Section 11(f) of the Securities Act) shall be
         entitled to contribution from any person who was not guilty of such
         fraudulent misrepresentation. The remedies provided for in this Section
         9 are not exclusive and shall not limit any rights or remedies which
         may otherwise be available to any indemnified party at law or in
         equity.

                  (h) The indemnity and contribution provisions contained in
         this Section 9 and the representations, warranties and other statements
         of the Company and the Selling Shareholders contained in this Agreement
         shall remain operative and in full force and effect regardless of (i)
         any termination of this Agreement, (ii) any investigation made by or on
         behalf of any Underwriter or any person controlling any Underwriter,
         any Selling Shareholder or any person controlling any Selling
         Shareholder, or the Company, its officers or directors or any person
         controlling the Company and (iii) acceptance of and payment for any of
         the Shares.

         10. Termination. This Agreement shall be subject to termination by
notice given by you to the Company, if (a) after the execution and delivery of
this Agreement and prior to the Closing Date (i) trading generally shall have
been suspended or materially limited on or by, as the case may be, any of the
New York Stock Exchange, the American Stock Exchange, the National Association
of Securities Dealers, Inc., the Chicago Board of Options Exchange, the Chicago
Mercantile Exchange or the Chicago Board of Trade, (ii) trading of any
securities of

                                      -23-





the Company shall have been suspended on any exchange or in any over-the-counter
market, (iii) a general moratorium on commercial banking activities in New York
shall have been declared by either Federal or New York State authorities or (iv)
there shall have occurred any outbreak or escalation of hostilities or any
change in financial markets or any calamity or crisis that, in your judgment, is
material and adverse and (b) in the case of any of the events specified in
clauses 10(a)(i) through 10(a)(iv), such event, singly or together with any
other such event, makes it, in your judgment, impracticable to market the Shares
on the terms and in the manner contemplated in the Prospectus.

         11. Effectiveness; Defaulting Underwriters. This Agreement shall become
effective upon the execution and delivery hereof by the parties hereto.

         If, on the Closing Date or the Option Closing Date, as the case may be,
any one or more of the Underwriters shall fail or refuse to purchase Shares that
it has or they have agreed to purchase hereunder on such date, and the aggregate
number of Shares which such defaulting Underwriter or Underwriters agreed but
failed or refused to purchase is not more than one-tenth of the aggregate number
of the Shares to be purchased on such date, the other Underwriters shall be
obligated severally in the proportions that the number of Firm Shares set forth
opposite their respective names in Schedule II bears to the aggregate number of
Firm Shares set forth opposite the names of all such non-defaulting
Underwriters, or in such other proportions as you may specify, to purchase the
Shares which such defaulting Underwriter or Underwriters agreed but failed or
refused to purchase on such date; provided that in no event shall the number of
Shares that any Underwriter has agreed to purchase pursuant to this Agreement be
increased pursuant to this Section 11 by an amount in excess of one-ninth of
such number of Shares without the written consent of such Underwriter. If, on
the Closing Date, any Underwriter or Underwriters shall fail or refuse to
purchase Firm Shares and the aggregate number of Firm Shares with respect to
which such default occurs is more than one-tenth of the aggregate number of Firm
Shares to be purchased, and arrangements satisfactory to you and the Company and
the Selling Shareholders for the purchase of such Firm Shares are not made
within 36 hours after such default, this Agreement shall terminate without
liability on the part of any non-defaulting Underwriter, the Company or the
Selling Shareholders. In any such case either you or the relevant Sellers shall
have the right to postpone the Closing Date, but in no event for longer than
seven days, in order that the required changes, if any, in the Registration
Statement and in the Prospectus or in any other documents or arrangements may be
effected. If, on the Option Closing Date, any Underwriter or Underwriters shall
fail or refuse to purchase Additional Shares and the aggregate number of
Additional Shares with respect to which such default occurs is more than
one-tenth of the aggregate number of Additional Shares to be purchased, the
non-defaulting Underwriters shall have the option to (i) terminate their
obligation hereunder to purchase Additional Shares or (ii) purchase not less
than the number of Additional Shares that such non-defaulting Underwriters would
have been obligated to purchase in the absence of such default. Any action taken
under this paragraph shall not relieve any defaulting Underwriter from liability
in respect of any default of such Underwriter under this Agreement.

         If this Agreement shall be terminated by the Underwriters, or any of
them, because of any failure or refusal on the part of any Seller to comply with
the terms or to fulfill any of the conditions of this Agreement, or if for any
reason any Seller shall be unable to perform its obligations under this
Agreement, the Sellers will reimburse the Underwriters or such Underwriters as
have so terminated this Agreement with respect to themselves, severally, for all
out-of-pocket expenses (including the fees and disbursements of their counsel)
reasonably

                                      -24-





incurred by such Underwriters in connection with this Agreement or the offering
contemplated hereunder.

         12. Counterparts. This Agreement may be signed in two or more
counterparts, each of which shall be an original, with the same effect as if the
signatures thereto and hereto were upon the same instrument.

         13. Applicable Law. This Agreement shall be governed by and construed
in accordance with the internal laws of the State of New York.


                                      -25-





         14. Headings. The headings of the sections of this Agreement have been
inserted for convenience of reference only and shall not be deemed a part of
this Agreement.

                                         Very truly yours,

                                         PROFESSIONAL DETAILING, INC.


                                         By:_______________________
                                              Name:
                                              Title:



                                         The Selling Shareholders named in
                                           Schedule I hereto, acting severally


                                         By:_______________________
                                             Attorney-in-Fact





Accepted as of the date hereof
MORGAN STANLEY & CO. INCORPORATED
[Other Managers]

Acting severally on behalf of themselves and the several Underwriters named in
  Schedule II hereto.

By:  Morgan Stanley & Co. Incorporated


By:_______________________________
     Name:
     Title:








                                                                      SCHEDULE I



                              SELLING SHAREHOLDERS



                                                                    Number of
                                                                   Firm Shares
                                Selling Shareholder                To Be Sold
                                -------------------                ----------
John P. Dugan
Charles T. Saldarini
[Others]


Total
                                                                 ---------------





                                      -27-





                                                                     SCHEDULE II


                                  UNDERWRITERS


                                                                   Number of
                                                                  Firm Shares
                       Underwriter                              To Be Purchased
                       -----------                              ---------------

Morgan Stanley & Co. Incorporated


                                                                   ---------
Total Firm Shares






                                      -28-




                                                                       EXHIBIT A


                             FORM OF LOCK-UP LETTER

                                   [attached]







                                      -29-