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                                                                    EXHIBIT 10.7

                        International Network Services
                  Addendum to the Credit Terms and Conditions
                              Dated as of 6/26/97


1.   CREDIT FACILITY
     ---------------

     A $10,000,000 Revolving Line of Credit for working capital purposes and for
     the purchase of capital equipment.

2.   MATURITY
     --------

     June 25, 1998.

3.   TERMS
     -----

     Interest payable monthly, principal at maturity.

     Upon maturity, at Borrower's option, outstandings under the Credit Facility
     related to capital equipment purchases, up to a maximum of $5,000,000 may
     be termed out in 36 equal monthly principal payments, plus interest. The
     equipment financed must have been purchased after 12/31/96.

4.   COLLATERAL
     ----------

     Bank to have a blanket first priority security interest perfected by a UCC
     filing on all assets of Borrower including all present and future
     inventory, chattel paper, accounts, contract rights, unencumbered
     equipment, general intangibles, and fixtures and the product thereof.

5.   BORROWING FORMULA
     -----------------

     Revolving Credit Advances:     None.
     -------------------------           

     Equipment-related advances:    100% of the cost of equipment, excluding
     --------------------------                                             
     taxes, freight, other taxes, and other soft costs. Equipment to include
     business & office machinery & equipment and other personal property which
     is resalable and removable. Advances must be supported by documentation
     evidencing purchase of equipment, in form and content satisfactory to the
     Bank.
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International Network Services
Addendum to the Credit Terms and Conditions
Dated as of  June 26, 1997
Page 2 of 4
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6.   PRICING
     -------

     Interest Rate:
     Revolving Credit:                              Bank's Prime Rate per annum.
     Equipment-related outstandings after 6/25/98:  Bank's Prime Rate +
                                                    annum.
     Facility Fee:  None.

7.   COVENANTS
     ---------

     A.  Borrower to maintain on a quarterly basis, beginning with the fiscal
         quarter ending 6/30/97:

         1)    Minimum Quick Ratio/1/ of 1.50 to 1.00.

         2)    Minimum Tangible Net Worth/2/ of $50,000,000.

         3)    Maximum Total Liabilities/3/ to Tangible Net Worth/2/ of 1.00  to
               1.00.

         Definitions:
         /1/ Quick Ratio is cash plus accounts receivable divided by current
         liabilities.
         /2/ Tangible Net Worth is the financial statement net worth of the
         Borrower prepared according to generally accepted accounting
         principles less intangible assets, plus indebtedness fully
         subordinated to the debt due to the Bank.
         /3/ Total Liabilities are all the Borrower's liabilities except
         for indebtedness fully subordinated to the debt due to the Bank.

     B.  Borrower to provide to Bank:

         1)   Unqualified audited financial statements within 120 days after
              each fiscal year end.

         2)   Quarterly financial statements (10Q) and Compliance Certificate
              within 45 days after quarter end.


         3)   Budgets, sales projections, operating plan, or other financial
              exhibits which Bank may reasonably request.

     C.  Other Covenants:

         1)   Borrower's primary operating banking accounts to be maintained at
              Bank.

 
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International Network Services
Addendum to the Credit Terms and Conditions
Dated as of June 26, 1997
Page 3 of 4
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          2)   Without Bank's prior approval, Borrower shall not:

               a.   Enter into any mergers or acquisitions or major debt
                    agreements, except for equipment leases.
               b.   Pay cash dividends or repurchase stock.
               c.   Hypothecate assets.
               d.   Loan money or guarantee loans of others.
               e.   Incur outside indebtedness.
     
          3)   Borrower shall notify Bank in writing of any legal action
               commenced against it which may result in damages over
               $500,000.  Borrower shall provide Bank with such notice
               immediately upon Borrower's receipt of notice of such legal
               action.

          4)   Borrower shall provide Bank proof of insurance on all tangible
               corporate assets and a Lender's Loss Payable Clause with Bank as
               loss payee.

8.   OTHER CONDITIONS
     ----------------

     A.   Initial collateral audit waived. However, Bank may at its discretion
          conduct annual collateral audits by Bank's designated agent at
          Borrower's expense, with results satisfactory to Bank.

     B.   Prior the closing of the Credit Facility, Borrower shall execute and
          deliver to Bank any and all documents required by Bank. Borrower to
          pay to Bank $250.00 for loan documentation preparation, due at
          closing,



Accepted and agreed to:

INTERNATIONAL NETWORK SERVICES

By:
   -------------------------------

Title:
      ----------------------------

Date:
     -----------------------------