Document:

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                                                                   EXHIBIT 10.15

                                  LEASE RENEWAL

This LEASE RENEWAL ("Renewal") is entered into as of August 17, 2000 by and
between BISYS, INC. ("Tenant") and DAVIS ENTERPRISES ("Landlord").

Whereas Tenant and Landlord have entered into that certain AGREEMENT OF LEASE
("Lease") dated November 29, 1990 with respect to the Springdale Business
Center, Units 6 through 14 consisting of 35,625 square feet as shown
cross-hatched on Exhibit "A", and desire to modify certain terms and provisions
of the Lease as set forth herein.

NOW THEREFORE, intending to be legally bound, the parties hereto agree:

1.   Any term not defined herein shall have the definition specified in the
     Lease.

2.   Under the terms of Section 1 of the Lease, Tenant agrees to incorporate
     into the Demised Premises Unit #6. The Demised Premises shall now consist
     of a total of 35,625 useable square feet at the Springdale Business Center
     in Cherry Hill, New Jersey.

3.   Completion of Tenant Fit-Up Work.

     (a)  Landlord shall have the reasonable right to approve Tenant's plans
          (the "plans") and specifications (the "Specifications") for the
          Tenant's fit-up work. Said Plans and Specifications shall be provided
          to Landlord within a reasonable time after the execution of this Lease
          Renewal, and with Landlord's reasonable approval, shall be attached
          hereto as Exhibits "B" (Plans) and "C" (Specifications). Tenant's
          construction will not materially deviate from the Plans or
          Specifications without Landlord's consent, such consent not to be
          unreasonably withheld, delayed or conditioned. If Landlord has not
          responded to Tenant's request for approval of the Plans within 10 days
          of submission of the same, all Plans shall be deemed to be approved as
          of the date of submission.

     (b)  Tenant shall perform the fit-up work at Tenant's expense; however,
          Landlord shall pay to Tenant the amount of Five Hundred Thirty Four
          Thousand Three Hundred Seventy Five Dollars ($534,375) in the
          following manner: Tenant shall submit three (3) "Requests for Draw",
          each in the amount of One Hundred Seventy Eight Thousand One Hundred
          Twenty Five Dollars ($178,125), to be submitted on the following
          dates:

          (1)  August 1, 2000

          (2)  The date when Tenant provides proof to Landlord that all ROUGH
               inspections (plumbing, electrical, fire, and building) have taken
               place and have been approved by the building inspector, and that
               all contractors have been paid in full and have released all
               claims.

          (3)  The date when Tenant provides proof to Landlord that all FINAL
               inspections (plumbing, electrical, fire, and building) have taken
               place and have been approved by the building inspector, proof
               that Tenant has received its Certificate of Occupancy, and proof
               that all contractors have been paid in full and have released all
               claims.
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         In no event are these reimbursed tenant fit-up expenses to be used as
         a credit toward rent.

         If there is any money remaining after the completion of the initial
         Tenant fit-up, Landlord will retain those funds until such time as
         Tenant wishes to use them for any capital improvement (carpet, interior
         walls, paint, electrical work, or plumbing), up until August 1, 2005.
         If tenant has not used these funds by August 1, 2005, they may be added
         to the $178,125.00 allocated for Tenant's additional fit-up work to be
         performed after Year 5 (see below). If Tenant does not use these funds
         for additional fit-up work, these funds shall be retained by Landlord.

         If after Year 5 (August 1, 2005) Tenant performs additional fit-up work
         at Tenant's expense, providing there is no Event of Default, Landlord
         shall pay to tenant up to the amount of One Hundred Seventy Eight
         Thousand One Hundred Twenty Five Dollars ($178,125), plus any unused
         amount from the initial Tenant fit-up work, in the following manner:
         Tenant shall submit three (3) "Requests for Draw", each in the amount
         of Fifty Nine Thousand Three Hundred Seventy Five Dollars ($59,375).
         This amount will be paid in three (3) equal installments as follows:

         (1) Between August 1, 2005 and November 1, 2005

         (2) The date any time after the payment described in (1) has been made,
             and Tenant provides proof to Landlord that all ROUGH inspections
             (plumbing, electrical, fire, and building) have occurred and have
             been approved by the building inspector, and that all contractors
             have been paid in full and have released all claims.

         (3) The date when Tenant provides proof to Landlord that all FINAL
             inspections (plumbing, electrical, fire and building) have taken
             place and have been approved by the building inspector, proof that
             Tenant has received its Certificate of Occupancy, and proof that
             all contractors have been paid in full and have released all
             claims.

         In no event are these reimbursed tenant fit-up expenses to be used as a
         credit toward rent.

         (c) Landlord's payment of each of the three installments of $178,125
             and each of the three installments of $178,125 and each of the
             three installments of $59,375 shall be due within (30) days after
             Landlord's receipt of Tenant's Request for Draw accompanied by such
             proof.

         (d) If Landlord fails to timely pay any installment of the fit-up
             allowance to Tenant, then such installment shall be applied as a
             credit against the next Rent(s) due.

         (e) Tenant's fit-up work shall not be of lesser quality then as may be
             described on Landlord's base building Specifications attached as
             Exhibit "C" hereto.

         (f) In connection with Tenant's work, Landlord shall reasonably
             cooperate with Tenant (for example, and without limitation:
             executing and delivering such documents and applications as Tenant
             may reasonably request for permits, consents and other approvals;
             scheduling of contractors; providing access).

         (g) Tenant must fulfill the following requirements:
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             (i)   Landlord reserves the right to approve the Tenant's general
                   contractor, such approval no to be unreasonably withheld.

             (ii)  Tenant must provide Landlord with Builder's Risk Insurance.

             (iii) Before the commencement of work, Tenant's general contractor
                   must provide Landlord with a Certificate of General Liability
                   Insurance in the amount of three million dollars
                   ($3,000,000), naming Landlord as Additional Insured.

             (iv)  Tenant's work must not unreasonably interfere with the quiet
                   enjoyment of the other tenants of the building.

             (v)   Tenant must provide Landlord with 24 hours notice prior to
                   shutting down electrical, fire protection, or any other
                   service to the building;

             (vi)  Prior to taking occupancy of the space, Tenant must provide
                   Landlord with a Certificate of Occupancy from the township.

4.   The first paragraph of Section 4 of the Lease shall be changed to read:

         (4)      Term. The term of this lease shall commence on August 1, 2000
                  and terminate on July 31, 2011 (eleven years).

                  Notwithstanding the foregoing provisions of Article 4 to the
                  contrary, tenant shall have the option to renew the term of
                  this Lease for 1 (one) additional period of 5 (five) years,
                  providing tenant gives notice of renewal 180 days prior to the
                  termination date of this Lease, and only if Tenant is not then
                  in default, or, but for the giving of notice or passage of
                  time, would be in default, and further providing that during
                  the Term of the Lease, there has been no default which has not
                  been cured.

                  The Minimum Annual Rent for each year of the renewal period
                  shall be increased (subject to increases in the "Additional
                  Rent") by 4% calculated annually, or the percentage of
                  increase, if any, in the Consumer Price Index for Urban Wage
                  Earners (CPI-W) U.S. City Average, whichever is higher.

5.   Landlord acknowledges that in accordance with Section 5 of the Lease,
     Tenant has already paid a security deposit and said security deposit shall
     not be adjusted under the terms of the Renewal.

6.   The first sentence of Section 6 (a) of the Lease shall be changed to read:

     (a)     Minimum Annual Rent. Tenant shall pay Minimum Annual Rent of
             $453,862.50 in equal monthly installments of $37,821.88 (per
             Exhibit "D" attached hereto), without notice or demand, and without
             set-off, in advance, made payable and delivered to Davis
             Enterprises on the first day of the calendar month during the term
             of this Lease.

7.   In the first sentence of Section 6 (b) (i) of the Lease ("Annual Operating
     Costs"), the number shall be changed to $0.86.

8.   In the first sentence of Section 6 (b) (ii) of the Lease ("Taxes"), the
     number shall be changed to $1.63.
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9.   Right of First Offer.

     (a)     Tenant shall have the Right of First Offer for any adjacent space
             in the Building, as such space becomes available for leasing by
             Landlord, provided that: (1) this Lease is then in full force and
             effect; (2) no Event of Default then exists hereunder; and (3)
             Tenant has given notice of its intention to exercise its Right of
             First Offer and to amend this Lease accordingly. The rental rate
             for the expansion space will be as per Exhibit "D" of this Lease.
             Tenant shall accept the expansion space "as is".

     The exercise of Tenant's Right of First Offer shall be further subject to
     the following:

                  (i)      Should Landlord receive an acceptable offer from a
                           third party for the leasing of all or part of the
                           adjacent space, Landlord will notify Tenant in
                           writing, and Tenant shall then have five (5) business
                           days to notify Landlord in writing that Tenant agrees
                           to lease the same space under the terms and
                           conditions set forth above.

                  (ii)     Landlord may accept the third party's offer if Tenant
                           declines or fails to reply in a timely manner within
                           the five (5) business day period specified above.
                           However, if Landlord does not enter into a lease with
                           such third party on the terms and conditions set
                           forth in the offer submitted for Tenant's review,
                           then Tenant's Right of First Offer shall continue to
                           apply to such space.

     (b)     Upon exercising its Right of First Offer in a timely manner, Tenant
             shall promptly enter into a modification of this Lease with
             Landlord to incorporate the subject space into this Lease, and to
             revise the Rent accordingly.

     (c)     Time is of the essence.

10.  Landlord shall use its best efforts to obtain and furnish to Tenant a
     non-disturbance agreement executed by the existing mortgagee and each
     future mortgagee of the Property during the term of this Lease.

11.  To the extent not revised by the provisions of this Renewal, all other
     terms and conditions of the Lease dated November 29, 1990 remain in full
     force and effect.

12.  Early Termination.

     Notwithstanding any provision in this Lease to the contrary, on or after
     the Commencement of Year 6 of this Lease (August 1, 2006), Tenant shall
     have the right to terminate this Lease (i) upon giving Landlord 6 months'
     written notice of its intent to terminate, and (ii) remitting to Landlord
     at the time of such notice the sum of $600,000.00. Said termination shall
     be effective 6 months from the date of Landlord's receipt of said written
     notice and payment.

13.  The term "fit-up work" shall refer to improvements made to the Premises
     such as telecommunications, carpet, interior walls, work stations,
     wallpaper, electricity, plumbing, etc. It shall not refer to improvements
     such as trade fixtures, shelving, artwork, or any other item of a
     nonpermanent nature.

14.  Satellite Antenna.
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     During the term of this Lease Renewal and any renewal thereof, Tenant shall
     have the right to install upon the roof a satellite earth station antenna
     in a location and size to be mutually agreed upon by both Landlord and
     Tenant, Landlord's consent not to be unreasonably withheld, conditioned, or
     delayed. The installation shall be made by Landlord's roofing contractor in
     a manner so as not to damage the building or roof, or void any applicable
     warranties, and further subject to Landlord's consent and approval, which
     shall not be unreasonably withheld, conditioned, or delayed. All costs of
     the installation and subsequent removal of the satellite antenna upon the
     termination of this Lease shall be borne exclusively by Tenant (including
     the cost of obtaining any required permits). Upon removing the satellite
     antenna, Tenant shall make all efforts to restore the roof to its original
     condition.

15.  This Lease Renewal, together with the Lease, constitutes the entire
     agreement between the parties with respect to the subject matter herein,
     and merges any prior or contemporaneous discussions and understandings.
     This Lease Renewal can only be modified by a written document executed by
     both parties.

IN WITNESS WHEREOF, the parties have caused this Lease Renewal to be executed as
of the date first set forth above.

ACKNOWLEDGED AND ACCEPTED FOR:

BISYS, INC.                                 DAVIS ENTERPRISES

By:      /s/ William W. Neville             By:      /s/ Mitchell R. Davis
         ----------------------                      ---------------------
                                                     Mitchell R. Davis

Print Name:  William W. Neville
             ------------------
Date:    August 15, 2000                    Date:    August 17, 2000
         ---------------                             ---------------<PAGE>   1
                                                                   EXHIBIT 10.17

                                 LEASE AMENDMENT

Execution of this Lease Amendment by Lessee and Lessor will amend that certain
lease dated May 29, 1990, amended June 10, 1993, and September 7, 1993,
(Collectively "the Lease"), wherein NBD Bank, as Successor Trustee to NDB Trust
Company of Illinois, not personally but as Trustee under trust agreement dated
April 25, 1990 and known as Trust No. 1153-CH, as subsequently assigned to SMII
OAK CREEK/LP, L.P., a Delaware limited partnership, is the Lessor, and Bisys, a
Delaware corporation, is the Lessee of the Premises located at 800 Parkview
Boulevard, Lombard, Illinois, as follows:

1. The Lease Term is hereby extended to October 31, 2010.

2. The monthly Base Rent schedule for the extended term for the Premises
   shall be as follows:

<TABLE>
<S>                                                   <C>
         November 1, 2000 - October 31, 2001          $32,812.00
         November 1, 2001 - October 31, 2002          $33,800.57
         November 1, 2002 - October 31, 2003          $34,810.17
         November 1, 2003 - October 31, 2004          $35,861.83
         November 1, 2004 - October 31, 2005          $36,934.53
         November 1, 2005 - October 31, 2006          $38,028.27
         November 1, 2006 - October 31, 2007          $39,185.10
         November 1, 2007 - October 31, 2008          $40,362.97
         November 1, 2008 - October 31, 2009          $41,561.87
         November 1, 2009 - October 31, 2010          $42,802.83
</TABLE>

3. It is understood that, other than the work described in Appendix "A", no
   promise to alter, remodel, decorate, clean, or improve the Premises or the
   Building, and no representation or warranty whatsoever, expressed or implied,
   regarding the condition of the Premises or the Building is being or has been
   made. Should Lessee elect to make additional Lessee improvements to the
   Premises other than the work described in Appendix "A", then it is understood
   that to the extent that any repairs, replacements or corrections are required
   to be made to the Premises and/or Building of any kind whatsoever, to cause
   same to comply with any applicable law, rule or regulation, whether federal,
   state or local, that the cost thereof shall be fully the responsibility of
   Lessee. Any work performed in the space by a contractor other than the
   Lessor's contractor is subject to Lessor's Facility Alteration Procedure
   attached herein to this amendment as Appendix "B" and made a part of this
   Lease.
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4. So long as Lessee is not in default Lessee shall have the option to cancel
   this Lease effective November 1, 2007, by giving Landlord no less than nine
   (9) months advance written notice accompanied by its payment of a termination
   fee of $167,687.00, half of which shall be due at time of notice, and the
   remaining half due on or before October 31, 2007.

5.    Except as specifically modified by the terms hereof, Lease shall remain in
      full force and effect.

      DATED this 28th day of March 2000.

      IN WITNESS HEREOF, Lessor and Lessee have executed this Lease Amendment by
day and year first above written.

LESSEE:                             LESSOR:

Bisys, a Delaware Corporation       SMII OAK CREEK/LP, L.P., a Delaware limited
                                    partnership
BY: /s/ James Guidici
    -------------------------

                                    BY:  Koll Bren Schreiber Realty Advisors,
Its: Executive Vice President       Inc., acting as Owner's Representative
    -------------------------

                                    BY: /s/ John P. Ehli
                                        ----------------------------------------
                                        John P. Ehli

                                    Its:  Asset Manager
                                        ----------------------------------------

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