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                                                                 EXHIBIT 10.5(C)
                              COMMERCIAL GUARANTY


PRINCIPAL    LOAN DATE      MATURITY       LOAN NO.  CALL     COLLATERAL        ACCOUNT    OFFICER      INITIALS 
                                                                                0839426        714

REFERENCES IN THE SHADED AREA ARE FOR LENDER'S USE ONLY AND DO NOT LIMIT THE APPLICABILITY OF THIS DOCUMENT TO 
ANY PARTICULAR LOAN OR ITEM.


Borrower:        SURREY, INC. (TIN: 74-2138564)
                 13110 TRAILS END RD.
                 LEANDER, TX 78641-9669

Lender:          NORWEST BANK TEXAS, SOUTH CENTRAL
                 DOWNTOWN OFFICE
                 900 CONGRESS AVENUE
                 AUSTIN, TX 78701

Guarantor:       JAMES OLSON
                 9703 VISTA VIEW DRIVE
                 AUSTIN, TX

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AMOUNT OF GUARANTY.  The amount of this Guaranty is Unlimited.

CONTINUING UNLIMITED GUARANTY.  For good and valuable consideration, JAMES
OLSON ("Guarantor") absolutely and unconditionally guarantees and promises to
pay to NORWEST BANK TEXAS, SOUTH CENTRAL ("Lender") or its order, in legal
tender of the United States of America, the indebtedness (as that term is
defined below) of SURREY, INC. ("Borrower") to Lender on the terms and
conditions set forth in this Guaranty.  Under this Guaranty, the liability of
Guarantor is unlimited and the obligations of Guarantor are continuing.

DEFINITIONS.  The following words shall have the following meanings when used
in this Guaranty:

         Borrower.  The word "Borrower" means SURREY, INC.

         Guarantor.  The word "Guarantor" means JAMES OLSON.

         Guaranty.  The word "Guaranty" means this Guaranty made by Guarantor
         for the benefit of Lender dated May 31, 1997.

         Indebtedness.  The word "Indebtedness" is used in its most
         comprehensive sense and means and includes any and all of Borrower's
         liabilities, obligations, debts, and Indebtedness to Lender, now
         existing or hereinafter incurred or created, including, without
         limitation, all loans, advances, interest, costs, attorneys' fees,
         debts, overdraft Indebtedness, credit card Indebtedness, lease
         obligations, other obligations, and
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05-31-1997                     COMMERCIAL GUARANTY
Loan No. 9006                       (continued)


         liabilities of Borrower, or any of them, and any present or future
         judgments against Borrower, or any of them; and whether any such
         Indebtedness is voluntarily or involuntarily incurred, due or not due,
         absolute or contingent, liquidated or unliquidated, determined or
         undetermined; whether Borrower may be liable individually or jointly
         with others, or primarily or secondarily, or as guarantor or surety;
         whether recovery on the Indebtedness may be or may become barred or
         unenforceable against Borrower for any reason whatsoever; and whether
         the Indebtedness arises from transactions which may be voidable on
         account of infancy, insanity, ultra vires, or otherwise.

         Lender.  The word "Lender" means NORWEST BANK TEXAS, SOUTH CENTRAL, its
         successors and assigns.

         Related Documents.  The words "Related Documents" mean and include
         without limitation all promissory notes, credit agreements, loan
         agreements, environmental agreements, guaranties, security agreements,
         mortgages, deeds of trust, and all other instruments, agreements and
         documents, whether now or hereafter existing, executed in connection
         with the Indebtedness.

NATURE OF GUARANTY.  Guarantor's liability under this Guaranty shall be open
and continuous for so long as this Guaranty remains in force.  Guarantor
intends to guarantee at all times the performance and prompt payment when due,
whether at maturity or earlier by reason of acceleration or otherwise, of all
Indebtedness.  Accordingly, no payments made upon the Indebtedness will
discharge or diminish the continuing liability of Guarantor in connection with
any remaining portions of the Indebtedness or any of the Indebtedness which
subsequently arises or is thereafter incurred or contracted.

DURATION OF GUARANTY.  This Guaranty will take effect when received by Lender
without the necessity of any acceptance by Lender, or any notice to Guarantor
or to Borrower, and will continue in full force until all Indebtedness incurred
or contracted before receipt by Lender of any notice of revocation shall have
been fully and finally paid and satisfied and all other obligations of
Guarantor under this Guaranty shall have been performed in full.  If Guarantor
elects to revoke this Guaranty, Guarantor may only do so in writing.
Guarantor's written notice of revocation must be mailed to Lender, by certified
mail, at the address of Lender listed above or such other place as Lender may
designate in writing.  Written revocation of this Guaranty will apply only to
advances or new Indebtedness created after actual receipt by Lender of
Guarantor's written revocation and Lender's written acknowledgment of receipt.
For this purpose and without limitation, the term "new Indebtedness" does not
include Indebtedness which at the time of notice of





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05-31-1997                     COMMERCIAL GUARANTY
Loan No. 9006                       (continued)

revocation is contingent, unliquidated, undetermined or not due and which later
becomes absolute, liquidated, determined or due.  This Guaranty will continue
to bind Guarantor for all Indebtedness incurred by Borrower or committed by
Lender prior to receipt of Guarantor's written notice of revocation, including
any extensions, renewals, substitutions or modifications of the Indebtedness.
All renewals, extensions, substitutions, and modifications of the Indebtedness
granted after Guarantor's revocation, are contemplated under this Guaranty and,
specifically will not be considered to be new Indebtedness.  This Guaranty
shall bind the estate of Guarantor as to Indebtedness created both before and
after the death or incapacity of Guarantor, regardless of Lender's actual
notice of Guarantor's death.  Subject to the foregoing, Guarantor's executor or
administrator or other legal representative may terminate this Guaranty in the
same manner in which Guarantor might have terminated it and with the same
effect.  Release of any other guarantor or termination of any other guaranty of
the Indebtedness shall not affect the liability of Guarantor under this
Guaranty.  A revocation received by Lender from any one or more Guarantors
shall not affect the liability of any remaining Guarantors under this Guaranty.
It is anticipated that fluctuations may occur in the aggregate amount of
Indebtedness covered by this Guaranty, and it is specifically acknowledged and
agreed by Guarantor that reductions in the amount of Indebtedness, even to zero
dollars ($0.00), prior to written revocation of this Guaranty by Guarantor
shall not constitute a termination of this Guaranty.  This Guaranty is binding
upon Guarantor and Guarantor's heirs, successors and assigns so long as any of
the guaranteed Indebtedness remains unpaid and even though the Indebtedness
guaranteed may from time to time be zero dollars ($0.00).

GUARANTOR'S AUTHORIZATION TO LENDER.  Guarantor authorizes Lender, either
before or after any revocation hereof, without notice or demand and without
lessening or otherwise affecting Guarantor's liability under this Guaranty,
from time to time:  (a) prior to revocation as set forth above, to make one or
more additional secured or unsecured loans to Borrower, to lease equipment or
other goods to Borrower, or otherwise to extend additional credit to Borrower;
(b) to alter, compromise, renew, extend, accelerate, or otherwise change one or
more times the time for payment or other terms of the Indebtedness or any part
of the Indebtedness, including increases and decreases of the rate of interest
on the Indebtedness; extensions may be repeated and may be for longer than the
original loan term; (c) to take and hold security for the payment of this
Guaranty or the Indebtedness, and exchange, enforce, waive, subordinate, fail
or decide not to perfect, and release any such security with or without the
substitution of new collateral; (d) to release, substitute, agree not to sue,
or deal with any one or more of Borrower's sureties, endorsers, or other
guarantors on any terms or in any manner Lender may choose; (e) to determine
how, when and what application of payments and credits shall be made on the
Indebtedness; (f) to apply such security and direct the order or manner of sale
thereof, including without limitation, any nonjudicial sale





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05-31-1997                     COMMERCIAL GUARANTY
Loan No. 9006                       (continued)

permitted by the terms of the controlling security agreement or deed of trust,
as Lender in its discretion may determine; (g) to sell, transfer, assign, or
grant participations in all or part of the Indebtedness; and (h) to assign or
transfer this Guaranty in whole or in part.

GUARANTOR'S REPRESENTATIONS AND WARRANTIES.  Guarantor represents and warrants
to Lender that (a) no representations or agreements of any kind have been made
to Guarantor which would limit or qualify in any way the terms of this
Guaranty; (b) this Guaranty is executed at Borrower's request and not at the
request of Lender; (c) Guarantor has full power, right and authority to enter
into this Guaranty; (d) the provisions of this Guaranty do not conflict with or
result in a default under any agreement or other instrument binding upon
Guarantor and do not result in a violation of any law, regulation, court decree
or order applicable to Guarantor; (e) Guarantor has not and will not, without
the prior written consent of Lender, sell, lease, assign, encumber,
hypothecate, transfer, or otherwise dispose of all or substantially all of
Guarantor's assets, or any interest therein; (f) upon Lender's request,
Guarantor will provide to Lender financial and credit information in form
acceptable to Lender, and all such financial information which currently has
been, and all future financial information which will be provided to Lender is
and will be true and correct in all material respects and fairly present the
financial condition of Guarantor as of the dates the financial information is
provided; (g) no material adverse change has occurred in Guarantor's financial
condition since the date of the most recent financial statements provided to
lender and no event has occurred which may materially adversely affect
Guarantor's financial condition; (h) no litigation, claim, investigation,
administrative proceeding or similar action (including those for unpaid taxes)
against Guarantor is pending or threatened; (i) Lender has made no
representation to Guarantor as to the creditworthiness of Borrower; and (j)
Guarantor has established adequate means of obtaining from Borrower on a
continuing basis information regarding Borrower's financial condition.
Guarantor agrees to keep adequately informed from such means of any facts,
events or circumstances which might in any way affect Guarantor's risks under
this Guaranty, and Guarantor further agrees that, absent a request for
information, Lender shall have no obligation to disclose to Guarantor any
information or documents acquired by Lender in the course of its relationship
with Borrower.

GUARANTOR'S WAIVERS.  Except as prohibited by applicable law, Guarantor waives
any right to require Lender (a) to continue lending money or to extend other
credit to Borrower; (b) to make any presentment, protest, demand or notice of
any kind, including notice of any nonpayment of the Indebtedness or of any
nonpayment related to any collateral, or notice of any action or nonaction on
the part of Borrower, Lender, any surety, endorser, or other guarantor in
connection with the Indebtedness or in connection with the creation of new or
additional loans or obligations; (c) to resort for payment or to proceed
directly or at once





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05-31-1997                     COMMERCIAL GUARANTY
Loan No. 9006                       (continued)

against any person, including Borrower or any other guarantor; (d) to proceed
directly against or exhaust any collateral held by Lender from Borrower, any
other guarantor, or any other person; (e) to give notice of the terms, time,
and place of any public or private sale of personal property security held by
Lender from Borrower or to comply with any other applicable provisions of the
Uniform Commercial Code; (f) to pursue any other remedy within Lender's power;
or (g) to commit any act or omission of any kind, or at any time, with respect
to any matter whatsoever.

If now or hereafter (a) Borrower shall be or become insolvent, and (b) the
Indebtedness shall not at all times until paid by fully secured by collateral
pledged by Borrower, Guarantor hereby forever waives and relinquishes in favor
of Lender and Borrower, and their respective successors, any claim or right to
payment Guarantor may now have or hereafter have or acquire against Borrower,
by subrogation or otherwise, so that at no time shall Guarantor be or become a
"creditor" or Borrower within the meaning of 11 U.S.C. section 547(b), or any
successor provision of the Federal bankruptcy laws.

Guarantor waives all rights of Guarantor under Chapter 34 of the Texas Business
and Commerce Code.  Guarantor also waives any and all rights or defenses
arising by reason of (a) any "one action" or "anti-deficiency" law or any other
law which may prevent Lender from bringing any action, including a claim for
deficiency against Guarantor, before or after Lender's commencement or
completion of any foreclosure action, either judicially or by exercise of power
of sale; (b) any election of remedies by Lender which destroys or otherwise
adversely affects Guarantor's subrogation rights or Guarantor's rights to
proceed against Borrower for reimbursement, including without limitation, any
loss of rights Guarantor may suffer by reason of any law limiting, qualifying,
or discharging the Indebtedness; (c) any disability or other defense of
Borrower, of any other guarantor, or of any other person, or by reason of the
cessation of Borrower's liability from any cause whatsoever, other than payment
in full in legal tender, of the Indebtedness; (d) any right to claim discharge
of the Indebtedness on the basis of unjustified impairment of any collateral
for the Indebtedness; (e) any statute of limitations, if at any time any action
or suit brought by Lender against Guarantor is commenced there is outstanding
Indebtedness of Borrower to Lender which is not barred by any applicable
statute of limitations; or (f) any defenses given to guarantors at law or in
equity other than actual payment and performance of the Indebtedness.  If
payment is made by Borrower, whether voluntarily or otherwise, or by any third
party, on the Indebtedness and thereafter Lender is forced to remit the amount
of that payment to Borrower's trustee in bankruptcy or to any similar person
under any federal or state bankruptcy law or law for the relief of debtors, the
Indebtedness shall be considered unpaid for the purpose of enforcement of this
Guaranty.





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05-31-1997                     COMMERCIAL GUARANTY
Loan No. 9006                       (continued)

Guarantor further waives and agrees not to assert or claim at any time any
deductions to the amount guaranteed under this Guaranty for any claim of
setoff, counterclaim, counter demand, recoupment or similar right, whether such
claim, demand or right may be asserted by the Borrower, the Guarantor, or both.

GUARANTOR'S UNDERSTANDING WITH RESPECT TO WAIVERS.  Guarantor warrants and
agrees that each of the waivers set forth above is made with Guarantor's full
knowledge of its significance and consequences and that, under the
circumstances, the waivers are reasonable and not contrary to public policy or
law.  If any such waiver is determined to be contrary to any applicable law or
public policy, such waiver shall be effective only to the extent permitted by
law or public policy.

LENDER'S RIGHT OF SETOFF.  In addition to all liens upon and rights of setoff
against the moneys, securities or other property of Guarantor given to Lender
by law, Lender shall have, with respect to Guarantor's obligations to Lender
under this Guaranty and to the extent permitted by law, a contractual
possessory security interest in and a right of setoff against, and Guarantor
hereby assigns, conveys, delivers, pledges, and transfers to Lender all of
Guarantor's right, title and interest in and to, all deposits, moneys,
securities and other property of Guarantor now or hereafter in the possession
of or on deposit with Lender, whether held in a general or special account or
deposit, whether held jointly with someone else, or whether held for
safekeeping or otherwise, excluding however all IRA, Keogh, and trust accounts.
Every such security interest and right of setoff may be exercised without
demand upon or notice to Guarantor.  No security interest or right of setoff
shall be deemed to have been waived by any act or conduct on the part of Lender
or by any neglect to exercise such right of setoff or to enforce such security
interest or by any delay in so doing.  Every right of setoff and security
interest shall continue in full force and effect until such right of setoff or
security interest is specifically waived or released by an instrument in
writing executed by Lender.

SUBORDINATION OF BORROWER'S DEBTS TO GUARANTOR.  Guarantor agrees that the
Indebtedness of Borrower to Lender, whether now existing or hereafter created,
shall be prior to any claim that Guarantor may now have or hereafter acquire
against Borrower, whether or not Borrower becomes insolvent.  Guarantor hereby
expressly subordinates any claim Guarantor may have against Borrower, upon any
account  whatsoever, to any claim that Lender may now or hereafter have against
Borrower.  In the event of insolvency and consequent liquidation of assets of
Borrower, through bankruptcy, by an assignment for the benefit of creditors, by
voluntary liquidation, or otherwise, the assets of Borrower applicable to the
payment of the claims of both Lender and Guarantor shall be paid to Lender and
shall be first applied by Lender and shall be first applied by Lender to the
Indebtedness of





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05-31-1997                     COMMERCIAL GUARANTY
Loan No. 9006                       (continued)

Borrower to Lender.  Guarantor does hereby assign to Lender all claims which it
may have or acquire against Borrower or against any assignee or trustee in
bankruptcy of Borrower; provided however, that such assignment shall be
effective only for the purpose of assuring to Lender full payment in legal
tender of the Indebtedness.  If Lender so requests, any notes or credit
agreements now or hereafter evidencing any debts or obligations of Borrower to
Guarantor shall be marked with a legend that the same are subject to this
Guaranty and shall be delivered to Lender.  Guarantor agrees, and Lender hereby
is authorized, in the name of Guarantor, from time to time to execute and file
financing statements and continuation statements and to execute such other
documents and to take such other actions as Lender deems necessary or
appropriate to perfect, preserve and enforce its rights under this Guaranty.

MISCELLANEOUS PROVISIONS.  The following miscellaneous provisions are a part of
this Guaranty:

         AMENDMENTS.  This Guaranty, together with any Related Documents
         constitutes the entire understanding and agreement of the parties as
         to the matters set forth in this Guaranty.  No alteration of or
         amendment to this Guaranty shall be effective unless given in writing
         and signed by the party or parties sought to be charged or bound by
         the alteration or amendment.

         APPLICABLE LAW.  This Guaranty has been delivered to Lender and
         accepted by Lender in the State of Texas.  If there is a lawsuit, and
         if the transaction evidenced by this Guaranty occurred in TRAVIS
         County, Guarantor agrees upon Lender's request to submit to the
         jurisdiction of the courts of TRAVIS County, State of Texas.  This
         Guaranty shall be governed by and construed in accordance with the
         laws of the State of Texas and applicable Federal laws.

         ATTORNEYS' FEES.  In addition to the amount of this Guaranty set forth
         above, Lender may hire an attorney to help enforce this Guaranty if
         Guarantor does not pay, and Guarantor will pay Lender's reasonable
         attorneys' fees.  Guarantor also will pay Lender all other amounts
         actually incurred by Lender as court costs, lawful fees for filing,
         recording, or releasing to any public office any instrument securing
         this Guaranty; the reasonable cost actually expended for repossessing,
         storing, preparing for sale, and selling any security; and fees for
         noting a lien on or transferring a certificate of title to any motor
         vehicle offered as security for this Guaranty.

         NOTICES.  All notices required to be given by either party to the
         other under this Guaranty shall be in writing, may be sent by
         telefacsimile, and, except for revocation





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05-31-1997                     COMMERCIAL GUARANTY
Loan No. 9006                       (continued)

         notices by Guarantor, shall be effective when actually delivered or
         when deposited with a nationally recognized overnight courier, or when
         deposited in the United States mail, first class postage prepared,
         addressed to the party to whom the notice is to be given at the
         address shown above or to such other addresses as either party may
         designate to the other in writing.  All revocation notices by
         Guarantor shall be in writing and shall be effective only upon
         delivery to Lender as provided above in the section title "DURATION OF
         GUARANTY."  If there is more than one Guarantor, notice to any
         Guarantor will constitute notice to all Guarantors.  For notice
         purposes, Guarantor agrees to keep Lender informed at all times of
         Guarantor's current address.

         INTERPRETATION.  In all cases where there is more than one Borrower or
         Guarantor, then all words used in this Guaranty in the singular shall
         be deemed to have been used in the plural where the context and
         construction so require; and where there is more than one Borrower
         named in this Guaranty or when this Guaranty is executed by more than
         one Guarantor, the words "Borrower" and "Guarantor" respectively shall
         mean all and any one or more of them.  The words "Guarantor,"
         "Borrower," and "Lender" include the heirs, successors, assigns, and
         transferees of each of them.  Caption headings in this Guaranty are
         for convenience purposes only and are not to be used to interpret or
         define the provisions of this Guaranty.  If a court of competent
         jurisdiction finds any provision of this Guaranty to be invalid or
         unenforceable as to any person or circumstance, such finding shall not
         render that provision invalid or unenforceable as to any other persons
         or circumstances, and all provisions of this Guaranty in all other
         respects shall remain valid and enforceable.  If any one or more of
         Borrower or Guarantor are corporations or partnerships, it is not
         necessary for Lender to inquire into the powers of Borrower or
         Guarantor or of the officers, directors, partners, or agents acting or
         purporting to act on their behalf, and any Indebtedness made or
         created in reliance upon the professed exercise of such powers shall
         be guaranteed under this Guaranty.

         WAIVER.  Lender shall not be deemed to have waived any rights under
         this Guaranty unless such waiver is given in writing and signed by
         Lender.  No delay or omission on the part of Lender in exercising any
         right shall operate as a waiver of such right or any other right.  A
         waiver by Lender of a provision of this Guaranty shall not prejudice
         or constitute a waiver of Lender's right otherwise to demand strict
         compliance with that provision or any other provision of this
         Guaranty.  No prior waiver by Lender, nor any course of dealing
         between Lender and Guarantor, shall constitute a waiver of any of
         Lender's rights or of any of Guarantor's obligations as to any future
         transactions.  Whenever the consent of Lender is required under this
         Guaranty, the granting of such consent by Lender in any instance shall
         not constitute





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05-31-1997                     COMMERCIAL GUARANTY
Loan No. 9006                       (continued)

         continuing consent to subsequent instances where such consent is
         required and in all cases such consent may be granted or withheld in
         the sole discretion of Lender.

EACH UNDERSIGNED GUARANTOR ACKNOWLEDGES HAVING READ ALL THE PROVISIONS OF THIS
GUARANTY AND AGREES TO ITS TERMS.  IN ADDITION, EACH GUARANTOR UNDERSTANDS THAT
THIS GUARANTY IS EFFECTIVE UPON GUARANTOR'S EXECUTION AND DELIVERY OF THIS
GUARANTY TO LENDER AND THAT THE GUARANTY WILL CONTINUE UNTIL TERMINATED IN THE
MANNER SET FORTH IN THE SECTION TITLED "DURATION AND GUARANTY."  NO FORMAL
ACCEPTANCE BY LENDER IS NECESSARY TO MAKE THIS GUARANTY EFFECTIVE.  THIS
GUARANTY IS DATED MAY 31, 1997.

GUARANTOR:


  /s/James Olson
- --------------------
JAMES OLSON





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