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                        SUPPORT AGREEMENT


    This SUPPORT AGREEMENT ("Agreement") is made as of the 3rd day of 
January, 1997, among Richard S. Simms (hereinafter referred to as the 
"undersigned"), Service Business Systems, Inc., a Colorado corporation 
(the "Borrower"), and Norwest Business Credit, Inc. (hereinafter
referred to as "NBCI").


                           WITNESSETH:

    WHEREAS, NBCI and Borrower have entered into that certain Credit and 
Security Agreement ("Credit Agreement") dated as of January 3, 1997, pursuant
to which NBCI may, from time to time, at its discretion, make advances to or 
for the benefit of Borrower;

      WHEREAS, the undersigned is the duly elected, qualified and acting 
Chief Financial Officer of the Borrower and is fully familiar with all of 
the Borrower's business and financial affairs;

      NOW, THEREFORE, to induce NBCI to make advances to or for the account 
of the Borrower under the Credit Agreement and for other good and valuable 
consideration, the receipt and sufficiency of which are hereby acknowledged, 
the undersigned, the Borrower and NBCI agree as follows:

     1.    The undersigned agrees that in the event (i) NBCI comes into 
possession of any or all of the tangible Collateral (as such term is defined 
in the Credit Agreement) or is collecting the Borrower's accounts receivable 
or otherwise disposing of Collateral by reason of the occurrence of an Event 
of Default under the Security Documents (as defined in Credit Agreement), 
(ii) NBCI has given notice of an acceleration of all of the obligations under
and an defined in the Security Agreement, and (iii) he is then in the employ 
of the Borrower, he will, if and at such time as he ceases to be employed by 
the Borrower, at NBCI's option and upon NBCI's request, and until this
Agreement shall have terminated as provided herein, enter NBCI's employ for 
a period not to exceed six months, for the sole purpose of disposing of such 
Collateral and collecting such accounts, or assisting NBCI in disposing of 
such Collateral and collecting such accounts.  During the period of such 
employment the undersigned shall exert his best efforts and devote 
approximately the same number of  hours as he devoted to the business of the 
Borrower prior to the commencement of such period to obtain sales of such 
Collateral at the best obtainable prices and terms and to collect such
accounts at their full face value.  If the events described in clauses (i) 
and (ii) occur at a time when the undersigned is employed by the Borrower, 
then, if requested by NBCI, Borrower shall cause the undersigned, so long as 
he is in its employ, to exert his best efforts and devote all of his regular
working hours to obtain sales of such Collateral at the best obtainable 
prices and terms and to collect such accounts at their full face value.

    2.   NBCI shall have the right to terminate the undersigned's employment 
or other assistance described in Paragraph 1 above at any time on five 
business days' notice, for any cause or without cause.

    3.   The sole compensation and remuneration of the undersigned for any 
employment or assistance rendered pursuant to Paragraph 1 above shall be a 
weekly salary paid at the same rate as the average salary (on a weekly basis)
paid to such person by Borrower in the twelve (12) months immediately 
preceding the commencement of such employment or activities.  Such 
compensation shall be prorated for partial weeks of service.

    4.   In connection with such employment, the undersigned shall not have 
any authority to bind NBCI, except such specific authority as NBCI may grant 
in writing.

    5.   In the event that the undersigned fails to comply with the 
provisions of Paragraph 1 above, unless such failure occurs as a result of 
death, mental or physical incapacity, or NBCI's termination of employment of 
the undersigned, the undersigned shall pay NBCI an amount equal to $25,000 
as liquidated damages, but not as a penalty, because of the difficulty of 
proving actual damages for the breach of premium of the type contained 
herein.  Such liquidated damages shall be immediately due and payable upon 
the failure by the undersigned to comply with the provisions of Paragraph 1 
above.  In addition, the undersigned shall be liable for NBCI's costs and 
expenses (including reasonable attorneys, fees and legal costs) incurred in 
enforcing this liquidated damages provision.  In no event, however, shall the
undersigned be liable for more than NBCI's actual damages, plus NBCI's costs 
of enforcement of this Agreement.  Notwithstanding the foregoing, the 
undersigned shall not have any obligation under this Paragraph 5 if he shall 
have ceased to be employed by the Borrower more than thirty (30) business 
days prior to the occurrence of the events described in clauses (i) add (ii) 
of Paragraph 1 hereof, and shall have given notice of such cessation
of employment to NBCI at least thirty (30) business days prior to the 
occurrence of such events.

    6.   In the event of the death, mental or physical incapacity, or 
termination by NBCI of employment of the undersigned, Borrower shall be 
responsible for obtaining a replacement for such person and Borrower shall 
use its best efforts to cause such replacement to execute a support
agreement substantially in the form of this Agreement.

    7.   This agreement shall remain in full force and effect so long as the 
Credit Agreement is outstanding or until otherwise agreed by an amendment 
hereto signed by NBCI and the undersigned.

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    8.    The provisions of this Agreement are declared to be severable.  If 
any provision of this Agreement shall be held to be invalid, illegal or 
unenforceable, such invalidity, illegality or unenforceability shall not 
affect any other provisions of this Agreement.

    9.    The undersigned and the Borrower waive notice of NBCI's acceptance 
hereof.



                                         SERVICE BUSINESS SYSTEMS, INC.


BY(Signature)                            /s/Donald V. Warriner
(Name and Title)                         Donald V. Warriner,
                                         President and CEO




                                         NORWEST BUSINESS CREDIT, INC.


BY(Signature)                            /s/Greg Glessman
(Name and Title)                         Greg Glessman,
                                         Vice President


                                         DATA NATIONAL CORPORATION


BY(Signature)                            /s/Richard S. Simms
(Name and Title)                         Richard S. Simms,
                                         Vice President














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