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                                                          Exhibit 10(iii)A(1)(d)


                                   APPENDIX G


E.1      Eligible Individual        Joseph G. Parham, Jr.

E.2 Effective Date Pursuant to the Eligible  Individual's  employment  agreement
letter, dated May 3, 2000 ("Employment  Letter") and Section 2.1(b) of the Plan,
for purposes of the Plan the Eligible  Individual's date of participation  shall
be May 15, 2000.

E.3  Special  Provisions  The  following  special  provision  shall apply to the
Eligible Individual's participation in the Plan.

         (a) The Eligible  Individual  will  qualify as a Vested  Terminee if he
completes 5 years of  employment  with NSI from May 15, 2000 to his  Termination
Date.

         (b) The Eligible Individual will be eligible for Early Retirement under
Sections  1.1(a)(2) and 3.3 upon attainment of age 60 while actively employed by
NSI (at which time he will have more than 9 years of service), provided that his
Early  Retirement  Accrued  Pension shall be calculated  based upon his Credited
Service and Eligible Service at his date of Early Retirement.

         (C) In the event prior to the  Eligible  Individual's  completion  of 5
years of employment with NSI, James S. Balloun retires or terminates  employment
as Chairman,  President and Chief  Executive  Officer of NSI, and thereafter the
Eligible  Individual's  employment  is  terminated  for any  reason  other  than
voluntary  termination,  termination upon death or Disability (as defined in the
Employment Letter) or termination by NSI for Cause (as defined in the Employment
Letter),  the Eligible  Individual will be eligible to receive Early  Retirement
Benefits  commencing  at the time of  termination,  calculated  by treating  the
Eligible  Individual  as if he were  age 55 at the date of  termination  and had
completed  5 years of  Credited  Service  as of such date.  Except as  expressly
provided herein,  the Eligible  Individual's  Early Retirement  Pension shall be
calculated and payable in accordance with the usual provisions of the Plan.

Except as  otherwise  specifically  provided in this  Appendix  G, the  Eligible
Individual's  benefits  under the Plan shall be determined in the same manner as
for other participants.