Document:

<PAGE>   1
                                                                    EXHIBIT 4(i)

                                    CORRECTED
                              CERTIFICATE OF TRUST
                                       OF
                       ANADARKO PETROLEUM CAPITAL TRUST I

            This Corrected Certificate of Trust of Anadarko Petroleum Capital
Trust I (the "Trust") is being duly executed and filed on behalf of the Trust by
the undersigned, being all of the trustees of the Trust, pursuant to Section
3810(e) of the Delaware Business Trust Act (12 Del. C. Sections 3801 et seq.)
(the "Act") to correct the Certificate of Trust of the Trust (the "Certificate")
first filed with the Office of the Secretary of State of the State of Delaware
on February 9, 2001. The correction to be made is that not all of the trustees
executed the Certificate.

      The Corrected Certificate of Trust reads in its entirety as follows:

            1. Name. The name of the business trust is "Anadarko Petroleum
Capital Trust I."

            2. Delaware Trustee. The name and business address of the Delaware
resident trustee meeting the requirements of Section 3807 of the Act are as
follows:

                         The Bank of New York (Delaware)
                         White Clay Center, Route 273
                         Newark, Delaware 19711

            3. Effectiveness. This Certificate of Trust shall be effective
immediately upon filing in the Office of the Secretary of State of the State of
Delaware.

            IN WITNESS WHEREOF, the undersigned, being all of the trustees of
the Trust, have executed this Corrected Certificate of Trust as of this 26th day
of February, 2001.

                              THE BANK OF NEW YORK (DELAWARE)
                              not in its individual capacity but solely as
                              a Delaware Trustee of the Trust

                              By: /s/ John Nichols
                                  Name: John Nichols
                                  Title: President
<PAGE>   2

                              By: /s/ Albert L. Richey
                                  Albert L. Richey,
                                  as Administrative Trustee

                              By: /s/  R. W. Tonnesen
                                  R. W. Tonnesen,
                                  as Administrative Trustee

                              By: /s/ Suzanne Suter
                                  Suzanne Suter,
                                  as Administrative Trustee<PAGE>   1
                                                                    EXHIBIT 4(j)

                                    CORRECTED
                              CERTIFICATE OF TRUST
                                       OF
                       ANADARKO PETROLEUM CAPITAL TRUST II

                  This Corrected Certificate of Trust of Anadarko Petroleum
Capital Trust II (the "Trust") is being duly executed and filed on behalf of the
Trust by the undersigned, being all of the trustees of the Trust, pursuant to
Section 3810(e) of the Delaware Business Trust Act (12 Del. C. Section 3801 et
seq.) (the "Act") to correct the Certificate of Trust of the Trust (the
"Certificate") first filed with the Office of the Secretary of State of the
State of Delaware on February 9, 2001. The correction to be made is that not all
of the trustees executed the Certificate.

         The Corrected Certificate of Trust reads in its entirety as follows:

                  1. Name. The name of the business trust is "Anadarko Petroleum
Capital Trust II."

                  2. Delaware Trustee. The name and business address of the
Delaware resident trustee meeting the requirements of Section 3807 of the Act
are as follows:

                         The Bank of New York (Delaware)
                         White Clay Center, Route 273
                         Newark, Delaware 19711

                  3. Effectiveness. This Certificate of Trust shall be effective
immediately upon filing in the Office of the Secretary of State of the State of
Delaware.

                  IN WITNESS WHEREOF, the undersigned, being all of the trustees
of the Trust, have executed this Corrected Certificate of Trust as of this 26th
day of February, 2001.

                              THE BANK OF NEW YORK (DELAWARE)
                              not in its individual capacity but solely as a
                              Delaware Trustee of the Trust

                              By: /s/ John Nichols
                                  Name: John Nichols
                                  Title: President
<PAGE>   2

                              By: /s/ Albert L. Richey
                                  Albert L. Richey,
                                  as Administrative Trustee

                              By: /s/ R. W. Tonnesen
                                  R. W. Tonnesen,
                                  as Administrative Trustee

                              By: /s/ Suzanne Suter
                                  Suzanne Suter,
                                  as Administrative Trustee<PAGE>   1
                                                                    EXHIBIT 4(k)

                                    CORRECTED
                              CERTIFICATE OF TRUST
                                       OF
                      ANADARKO PETROLEUM CAPITAL TRUST III

            This Corrected Certificate of Trust of Anadarko Petroleum Capital
Trust III (the "Trust") is being duly executed and filed on behalf of the Trust
by the undersigned, being all of the trustees of the Trust, pursuant to Section
3810(e) of the Delaware Business Trust Act (12 Del. C. Sections 3801 et seq.)
(the "Act") to correct the Certificate of Trust of the Trust (the "Certificate")
first filed with the Office of the Secretary of State of the State of Delaware
on February 9, 2001. The correction to be made is that not all of the trustees
executed the Certificate.

      The Corrected Certificate of Trust reads in its entirety as follows:

            1. Name. The name of the business trust is "Anadarko Petroleum
Capital Trust III."

            2. Delaware Trustee. The name and business address of the Delaware
resident trustee meeting the requirements of Section 3807 of the Act are as
follows:

                        The Bank of New York (Delaware)
                        White Clay Center, Route 273
                        Newark, Delaware 19711

            3. Effectiveness. This Certificate of Trust shall be effective
immediately upon filing in the Office of the Secretary of State of the State of
Delaware.

            IN WITNESS WHEREOF, the undersigned, being all of the trustees of
the Trust, have executed this Corrected Certificate of Trust as of this 26th day
of February, 2001.

                              THE BANK OF NEW YORK (DELAWARE) not in its
                              individual capacity but solely as a Delaware
                              Trustee of the Trust

                              By: /s/ John Nichols
                                  Name: John Nichols
                                  Title: President

<PAGE>   2
                              By: /s/ Albert L. Richey
                                  Albert L. Richey,
                                  as Administrative Trustee

                              By: /s/ R. W. Tonnesen
                                  R. W. Tonnesen,
                                  as Administrative Trustee

                              By: /s/ Suzanne Suter
                                  Suzanne Suter,
                                  as Administrative Trustee<PAGE>

                                                                   EXHIBIT 10.19

                                AMENDMENT TO THE
                             DEAN WITTER START PLAN
                             ----------------------

     WHEREAS, Dean Witter Reynolds Inc. ("DWR"), a Delaware corporation,
maintains the Dean Witter START Plan, as amended (the "START Plan");

     WHEREAS, DWR desires that the START Plan be amended as set forth herein;

     NOW, THEREFORE, the START Plan is hereby amended as follows:

1.  Effective January 1, 2000, the definition of the term "Period of Service" in
Section 3(a) of the START Plan shall be amended by adding the following sentence
to the end thereof:

          "Effective January 1, 2000, Period of Service shall include such
     periods as the Company determines are required to be taken into account for
     eligibility and vesting purposes in order to comply with Code section
     414(n)(4)."

2.  Effective January 1, 2001, Subsection (i) of Section 5(a) of the START Plan
shall be amended by adding the following paragraph to the end thereof:

          "Notwithstanding the foregoing provisions of this Section 5(a)(i),
     effective January 1, 2001: each Participant who is an Eligible Employee or
     Immediately Eligible Employee may make Basic Pre-Tax Contributions to the
     Plan for any year equal to any whole percentage from 1% to 12% of the
     Participant's Earnings for such year, and no additional Supplemental Pre-
     Tax Contributions shall be permitted; the Plan Administrator may at any
     time and from time to time limit the amount of Basic Pre-Tax Contributions
     allowed to be made by some or all Eligible Employees or Immediately
     Eligible Employees to ensure compliance with applicable nondiscrimination
     or other rules, provided however, that in no event shall any such
     limitation restrict employees that are not Highly Compensated Employees to
     any greater extent than similarly situated individuals that are Highly
     Compensated Employees."

3.  Effective January 1, 2001, Section 5(e) of the START Plan shall be amended
by adding the following sentence to the end thereof:

          "In the event that a Participant's Elective Deferrals and his elective
     deferrals (as defined by Code section 402(g)) to all plans other than the
     START Plan exceed the limit set forth in Code section 402(g) and the Plan
     Administrator cannot reasonably distribute such Excess Elective Deferrals
     prior to the April 15th  next following the close of

                                       1
<PAGE>

     the taxable year in which the excess deferrals were made, then such
     Participant's Excess Elective Deferrals shall remain in the Trust on the
     same terms and subject to the same distribution rules as other Elective
     Deferrals."

4.   Effective January 1, 2000, Section 5(f)(1) of the START Plan shall be
amended by adding the following two sentences to the end thereof:

          "Effective for Plan Years beginning on or after January 1, 1997 and
     before January 1, 2001, the ADP test shall be applied using the current
     year testing method.  Effective for Plan Years beginning on or after
     January 1, 2001, the ADP test shall be applied using the prior year testing
     method."

5.   Effective January 1, 1997, with respect to Plan Years beginning on or after
such date, clause (iv) of Section 5(f)(2) of the START Plan shall be amended to
read as follows:

          "(iv)  all such Qualified Non-Elective Contributions and Qualified
     Matching Contributions are allocated to the accounts of Eligible Employees
     as of a date within the Plan Year (pursuant to Regulations section
     1.401(k)-(b)(4)(i)(A)) as if such contributions were Elective Deferrals and
     as if such contributions are made before the end of the 12-month period
     immediately following the Plan Year to which the contributions relate;
     and,"

6.   Effective January 1, 2000, with respect to Plan Years beginning on or after
such date, the third sentence of Section 5(g)(1) of the START Plan shall be
amended by inserting the phrase "Excess Contribution for the preceding Plan Year
allocated to the Participant" in lieu of the phrase "Excess Contribution on
behalf of the Participant for the preceding Plan Year".

7.  Effective January 1, 2000, Section 5(h)(1) of the START Plan shall be
amended by adding the following two sentences to the end thereof:

          "Effective for Plan Years beginning on or after January 1, 1997 and
     before January 1, 2001, the ACP test shall be applied using the current
     year testing method.  Effective for Plan Years beginning on or after
     January 1, 2001, the ACP test shall be applied using the prior year testing
     method."

8.   Effective January 1, 1997, Section 5(h)(2) of the START Plan shall be
amended to read as follows:

     "(2)  Contributions made by or on behalf of Highly Compensated Employees
     shall not exceed the limits imposed upon multiple use of the alternative
     limitation by Code section 401(m)(9).  For this purpose, Code section
     401(m)(9) and Regulations section 1.401(m)-2(b) are incorporated herein by
     reference.  For Plan Years beginning prior to

                                       2
<PAGE>

     January 1, 1997, if one or more Highly Compensated Employees' Contributions
     exceed the multiple use limit, then the Actual Contribution Ratio ("ACR")
     of Highly Compensated Employees shall be reduced (starting with such Highly
     Compensated Employee whose ACR is the highest) so that the limit is not
     exceeded, and the amount of any such reduction shall be treated as an
     Excess Aggregate Contribution. For Plan Years beginning on or after January
     1, 1997, if the sum of the ADP and the ACP of Highly Compensated Employees
     exceeds the multiple use limit, then the ACP of Highly Compensated
     Employees shall be reduced in the same manner as that used in determining
     Excess Aggregate Contributions, and the amount by which each Highly
     Compensated Employees' Contributions is thereby reduced shall be treated as
     an Excess Aggregate Contribution; and for these purposes, the ADP and ACP
     of Highly Compensated Employees are determined after any adjustments
     required to pass the tests described in Sections 5(f)(1) and 5(h)(1) and
     are deemed to be the maximum permitted under such tests for the Plan Year.
     Multiple use shall not occur if the ADP and ACP of Highly Compensated
     Employees is not greater than 125% of the ADP and ACP of non-Highly
     Compensated Employees."

9.   Effective January 1, 1997, clause (iv) of Section 5(h)(3) of the START Plan
shall be amended to read as follows:

          "(iv) the Qualified Non-Elective Contributions are allocated to the
     accounts of Eligible Employees as of a date within the Plan Year (pursuant
     to Regulations section 1.401(k)-(b)(4)(i)(A)) and the Elective Deferrals
     satisfy Regulations section 1.401(k)-1(b)(4)(i) for the Plan Year; and the
     Qualified Non-Elective Contributions are made before the end of the 12-
     month period immediately following the Plan Year to which the contributions
     relate, and,"

10.   Effective January 1, 1997, Section 5(i)(1) of the START Plan shall be
amended to read as follows:

          "Notwithstanding any other provision of this Plan, Excess Aggregate
     Contributions allocated to Highly Compensated Employees plus any income or
     minus any loss allocable thereto shall be forfeited, if forfeitable, or, if
     not forfeitable, distributed not later than the last day of each Plan Year
     on the basis of the respective portions of such Excess Aggregate
     Contributions allocated to Highly Compensated Employees whose Contributions
     for a Plan Year must be reduced under Section 5(h) and, effective January
     1, 1997, Code section 401(m)(6)(C), to enable the Plan to satisfy the ACP
     test."

11.   Effective January 1, 1997, Section 5(i)(2) of the START Plan shall be
amended by inserting the phrase "or, for Plan Years beginning on or after
January 1, 1997, Excess Aggregate Contribution for the preceding Plan Year
allocated to the Highly Compensated Employee"

                                       3
<PAGE>

immediately following the phrase "Excess Aggregate Contributions on behalf of
the Highly Compensated Employee for the preceding Plan Year".

12.  Effective March 1, 2001, Sections 6(a) through 6(c) of the START Plan shall
be amended to read as follows:

     "SECTION 6.  INVESTMENT OF EMPLOYEE CONTRIBUTIONS.
                  ------------------------------------

        "(a) Investment of Employee Contributions.  A Participant shall, in a
             ------------------------------------
     manner prescribed by the Plan Administrator, direct the investment of his
     or her Employee Contributions among the Investment Funds available under
     the Plan in whole one-percentage increments, all of which together shall
     equal 100%; provided that, prior to March 1, 2001, any such direction shall
     be limited to no more than five available Investment Funds and shall only
     be made in whole percentage increments that are multiples of 10%.

        "(b) Changing Investment Directions for Future Contributions. In
             -------------------------------------------------------
     accordance with procedures established by the Plan Administrator for this
     purpose, a Participant may elect to change the Investment Funds in which
     his or her future Employee Contributions will be invested and/or the
     percentage of such contributions that will be invested in any available
     Investment Fund; provided that such elections shall be made in whole one-
     percentage increments, all of which together shall equal 100% and that only
     one change may be effected in any day; and provided, further, that prior to
     March 1, 2001, Participants shall be limited to one such election per
     quarterly record provided to the Participant by the Plan Administrator (or
     as otherwise determined by the Plan Administrator on a uniform and
     nondiscriminatory basis), which election shall be limited to no more than
     five available Investment Funds per election and shall only be made in
     whole percentage increments that are multiples of 10%.

        "(c) Fund Balance Transfers.  In accordance with procedures established
             ----------------------
     by the Plan Administrator for this purpose, a Participant may elect to
     transfer all or any portion of his or her Employee Contribution Accounts
     among available Investment Funds (a "Fund Balance Transfer" or "FBT")
     subject to the provisions of this Section 6(c).  A Participant may make one
     FBT per business day, subject to Section 6(e), provided that prior to March
     1, 2001, a Participant may make one FBT per quarterly record provided to
     the Participant by the Plan Administrator (or as otherwise determined by
     the Plan Administrator on a uniform and nondiscriminatory basis)."

        "With respect to FBTs directed before March 1, 2001, FBTs shall only be
     made in whole percentage increments that are multiples of 10%, shall be
     directed in whole shares or percentages of shares credited from an
     Investment Fund to up to five other Investment Funds, and shall otherwise
     be subject to the provisions of the Plan in effect as of the date

                                       4
<PAGE>

of the direction. In transferring assets among Investment Funds prior to March
1, 2001, the Plan Administrator shall deduct the amount(s) to be transferred
from the Participant's Employee Contribution Accounts in the following order:

                (1) Supplemental After-Tax;
                (2) Basic After-Tax;
                (3) Basic After-Tax Adjustment;
                (4) Supplemental Pre-Tax; and,
                (5) Basic Pre-Tax."

        "In the case of an FBT on or after March 1, 2001, the Plan Administrator
     shall transfer assets among Investment Funds from the Participant's
     Accounts in the order determined by the Plan Administrator on a uniform and
     nondiscriminatory basis."

13.   Effective March 1, 2001, Section 6(d) of the START Plan shall be amended
by inserting the following language immediately following the title
"Diversification of Company Contribution Account":
------------------------------------------------

          "(i)  On or After March 1, 2001.  Each eligible Participant may make
                -------------------------
     an election to direct the investment of the eligible portion of his or her
     Company Contribution Account to such designated investment funds (as
     defined below) as he or she shall select.  For purposes of this Section
     6(d), "designated investment funds" shall be such alternative investment
     funds established within the Plan or in another defined contribution plan
     of the Company or one of its Affiliates that is intended to be qualified
     under Code section 401(a) to receive the transfers described in this
     Section 6(d) which the Plan Administrator shall designate from time to time
     as alternative investment funds (or in the absence of such a designation,
     all of the Investment Funds under this Plan that are available for
     investments of new Pre-Tax Contributions at the time the election under
     this Section 6(d) is made); provided that, for purposes of this Section
     6(d), an "eligible Participant" shall mean any Participant who has attained
     age 55.

          "(ii)  The portion of an eligible Participant's Company Contribution
     Account which is subject to an election to change investments is equal to
     the excess of (I) over (II) as follows:

                    (I) 50% of the total number of shares of MWD Stock that have
               ever been allocated to such Participant's Company Contribution
               Account as of the date of such Participant's election (adjusted
               appropriately to reflect subdivision or combinations of such
               shares or similar transactions); provided that "75%" shall be
               substituted for "50%" for any eligible Participant who has
               attained age 60; and

                                       5
<PAGE>

                    (II) the number of shares of MWD Stock that have ever been
               allocated to such Participant's Company Contribution Account
               (adjusted appropriately to reflect subdivisions or combinations
               of such shares or similar transactions) that have been
               alternatively invested or transferred to another plan by the
               Participant pursuant to his or her prior elections under this
               Section 6(d).

          "(iii)  An election to direct an investment transfer under this
     Section 6(d) will be given effect as soon as administratively practicable.
     An eligible Participant may make up to four such elections in any Plan
     Year.

          "(iv)  Prior to March 1, 2001."
                 ----------------------

14.  Effective March 1, 2001, the last sentence of Section 6(d) of the START
Plan shall be renumbered as clause (v) of Section 6(d).

15.  Effective March 1, 2001, Section 6(e) of the START Plan shall be amended by
adding the following to the end thereof:

        "The Plan Administrator shall adopt such rules and procedures as it
     deems advisable with respect to all matters relating to the election and
     use of the Investment Funds and the MSDW Stock Fund. The Plan Administrator
     shall have the right, without prior notice to any Participant, to suspend
     for a limited period of time daily transfers between and among Investment
     Funds or the MSDW Stock Fund or to delay effecting transfers between and
     among Investment Funds or the MSDW Stock Fund for one or more days if the
     Plan Administrator determines that such action is necessary or advisable
     (A) in light of unusual market conditions, (B) in response to technical or
     mechanical problems with the automated system or the Plan's third-party
     record keeper or (C) in connection with any suspension of normal trading
     activity on the New York Stock Exchange or other applicable exchange or
     automated trading system.

16.  Effective March 1, 2001, Section 7(b) of the START Plan shall be amended to
read as follows:

        "(b) Investment of Trust Fund.  Except as otherwise provided in
             ------------------------
     Section 6(d), all Company Contributions shall be invested entirely in the
     Morgan Stanley Dean Witter Stock Fund; prior to March 1, 2001, all Dean
     Witter Discover Stock, Sears Stock, Allstate Stock, and SPS Stock (prior to
     October 15, 1998) included in Rollover or Qualified Plan Transfer
     Contributions, or cash in lieu of fractional shares of Stock, shall be
     invested in the Dean Witter Discover Stock Fund, the Sears Stock Fund, the
     Allstate Stock Fund, or the SPS Fund as appropriate. All other
     contributions shall be invested in

                                       6
<PAGE>

     such Investment Funds as the Company shall specify in accordance with the
     investment directions of the appropriate Participant. Notwithstanding any
     provision of the Plan to the contrary, any amounts that are attributable to
     employer contributions and that are held in the SPS Stock Fund on October
     15, 1998, or the Sears or Allstate Stock Funds on March 1, 2001, shall be
     transferred to the Morgan Stanley Dean Witter Stock Fund as soon as
     practicable after such respective dates.

17.    Effective March 1, 2001, Section 7(c) of the START Plan shall be amended
to read as follows:

        "(c) Investment Funds.  The Trust Fund shall be composed of the Morgan
             ----------------
     Stanley Dean Witter Stock Fund, effective as of March 1, 2001, and such
     other Investment Funds as shall be designated by the Company pursuant to
     Section 7(c)(ii).  Prior to March 1, 2001,
     the Trust Fund also included the Sears Stock Fund and the Allstate Stock
     Fund, and prior to October 15, 1998, the SPS Stock Fund, and all references
     in the Plan to such Funds shall be construed in a manner consistent with
     the liquidation of such Funds effective as of March 1, 2001."

18.    Effective March 1, 2001, Subsections (iii) and (iv) of Section 7(c) of
the START Plan shall be amended by adding the phrase "Prior to March 1, 2000" at
the beginning of each such Subsection.

19.   Effective January 1, 2001, clause (iv) of Section 8(a) of the START Plan
shall be amended by adding the phrase "made before January 1, 2001" immediately
after the phrase "Supplemental Pre-Tax Contributions".

20.  Effective March 1, 2001, Section 9(b) of the START Plan shall be amended by
replacing the phrase "in a money market fund designated as an Investment Fund
under the Plan" with the phrase "in an Investment Fund designated from time to
time by the Plan Administrator on a uniform and nondiscriminatory basis".

21.  Effective March 1, 2001, Section 10(b) of the START Plan shall be amended
to read as follows:

     "(b)  Forfeitures. Effective March 1, 2001, the non-vested portion of the
           -----------
     Matching Contribution Account of a Participant shall be forfeited as of the
     end of the month in which occurs such Participant's Termination of
     Employment; provided that the non-vested portion of the Matching
     Contribution Account of any Participant whose Termination of Employment is
     prior to March 1, 2001 shall be forfeited as of the last day of the Plan
     Year in which such Participant terminates employment except that the non-
     vested portion of the Matching Contribution Account of any Participant who
     was an Employee before January 1, 1989 but did not have at least one Hour
     of Service on or after

                                       7
<PAGE>

     January 1, 1989 shall be forfeited in accordance with the rules applicable
     under the Plan immediately prior thereto. Notwithstanding the foregoing, if
     a Participant who terminates employment shall subsequently be credited with
     one Year of Service before incurring five consecutive One Year Breaks, the
     amount so forfeited shall be restored to such Participant's Matching
     Contribution Account without adjustment for income, gains or losses;
     provided that such restoration shall be made from forfeitures arising in
     the Plan Year in which the restoration occurs and, to the extent necessary,
     from a special Company contribution which shall be made for that purpose.
     The foregoing forfeiture provisions shall only apply to the extent
     permitted by applicable law."

22.   Effective March 1, 2001, Section 11(a) of the START Plan shall be amended
by adding the following to the end thereof:

     "With respect to distributions occurring on or after March 1, 2001, a
     Participant may request a distribution of all or any portion of his Plan
     Benefit, in accordance with procedures specified by the Plan Administrator;
     provided that a Participant may not receive more than two distributions in
     any calendar year and may not receive a single distribution which is less
     than $500 (or the amount of the Participant's remaining Plan Benefit, if
     less) under this Section 11(a). In the case of a distribution under this
     Section 11(a) which is less than the entire amount of a Participant's Plan
     Benefit, the Plan Administrator shall withdraw assets from the
     Participant's Accounts in the order determined by the Plan Administrator on
     a uniform and nondiscriminatory basis in accordance with applicable law."

23.   Effective March 1, 2001, the first sentence of Section 11(b) of the START
Plan shall be amended by adding the phrase "Prior to March 1, 2001," immediately
prior to the phrase "Subject to Section 11(c)," and a new sentence shall be
added immediately following the first sentence of Section 11(b) to read as
follows:

          "On or after March 1, 2001, subject to Section 11(c), a Participant's
     Plan Benefit shall be distributed as soon as practicable after the date as
     of which the Participant's employment with all members of the Affiliated
     Group terminates."

24.   Effective March 1, 2000, Section 11(d) of the START Plan shall be amended
by adding the following phrase to the end of the first sentence thereof:

          "; provided that, following the death of a Participant on or after
     March 1, 2000, any amount distributed pursuant to this Section 11(d) shall
     be distributed no later than December 31st of the calendar year which
     contains the fifth anniversary of the Participant's death."

                                       8
<PAGE>

25.   Effective March 1, 2000, the second sentence of Section 11(d) of the START
Plan shall be amended by adding the phrase "Subject to the provisions of the
foregoing sentence" immediately prior to the phrase "Upon the death of a
Participant".

26.   Effective January 1, 2000, Section 11(g) of the START Plan shall be
amended by adding the following sentence immediately after the end of the second
sentence thereof:

          "In addition, effective January 1, 2000, this election shall not apply
     to a hardship distribution under Section 12(g) except to the extent
     prescribed by rules and regulations issued by the Secretary of the
     Treasury."

27.   Effective March 1, 2001, Section 12(a) of the START Plan shall be amended
by adding the phrase "except as otherwise specifically provided in this Section
12," immediately prior to the phrase "a Participant may not withdraw".

28.   Effective March 1, 2001, the portion of Section 12(b) of the START Plan
following clause (i) shall be amended to read as follows:

          "(ii)  Prior to March 1, 2001, a Participant may not make more than
     one withdrawal for any quarterly record; on and after March 1, 2001, a
     Participant may not make more than two withdrawals (other than hardship
     withdrawals described in Section 12(g)) per calendar year."

          "(iii) A Participant may not make a withdrawal from the Participant's
     Pre-Tax Accounts except (A) after attaining age 59 1/2 or (B) upon
     suffering a hardship, as provided in Sections 12(d) and (g)."

29.  Effective January  1, 2001, Section 12(c) of the START Plan shall be
amended by adding the phrase, "prior to January 1, 2001," immediately after the
word "If".

30.  Effective March 1, 2001, the Section 12(d) of the START Plan shall be
amended to read as follows:

     Source and Amount of Withdrawal.  In making a withdrawal or hardship
     -------------------------------
     withdrawal under this Section 12, a Participant shall specify the
     Investment Fund (or Funds) from which the withdrawal or hardship withdrawal
     is to be made and the amount (a specified number of whole shares or the
     entire balance in a particular Investment Fund as of the Valuation Date of
     the Quarter preceding the Quarter in which the withdrawal or hardship
     withdrawal is made) in accordance with such procedures as the Plan
     Administrator shall provide.  In the case of a hardship withdrawal prior to
     March 1, 2001, the Plan Administrator shall, after determining that the
     Participant has taken any loan permitted under Section 12(g) and withdrawn
     all available assets from Employee After-Tax

                                       9
<PAGE>

     Accounts, withdraw assets from an Investment Fund (or Funds) first from the
     Participant's Supplemental Pre-Tax Account and then from the Participant's
     Basic Pre-Tax Account. In the case of a withdrawal prior to March 1, 2001
     (other than a hardship withdrawal), in withdrawing assets from an
     Investment Fund (or Funds) the Plan Administrator shall withdraw assets
     from the Participant's Employee Contribution Accounts in the following
     order:

                (1) Supplemental After-Tax;
                (2) Basic After-Tax;
                (3) Basic After-Tax Adjustment;
                (4) Supplemental Pre-Tax; and,
                (5) Basic Pre-Tax."

     "In the case of a withdrawal, including a hardship withdrawal, on or after
     March 1, 2001, the Plan Administrator shall withdraw assets from the
     Participant's Accounts in the order determined by the Plan Administrator on
     a uniform and nondiscriminatory basis in accordance with applicable law."

31.   Effective March 1, 2001, Section 12(e) of the START Plan shall be amended
to read as follows:

          "(e)  Time of Payment of Withdrawals.  Withdrawals, and hardship
                ------------------------------
     withdrawals described in this Section 12, will be paid as soon as
     administratively practicable following the approval of the Participant's
     request for a withdrawal (or prior to March 1, 2001, normally approximately
     eight weeks following the receipt of a Participant's request for a
     withdrawal)."

32.   Effective March 1, 2001, Section 12(f) of the START Plan shall be amended
by adding the phrase "Prior to March 1, 2001," immediately prior to the phrase
"All withdrawals from Employee Accounts" and by adding a new paragraph to the
end thereof to read as follows:

          "On and after March 1, 2001, all withdrawals under this Section 12
     shall be distributed in the form of a lump sum payment consisting of (i)
     cash equal to the value of the portion of the Participant's Accounts being
     withdrawn or (ii) at the election of the Participant and as permitted under
     this Section 12, whole shares of MWD Stock, Sears Stock and/or Allstate
     Stock (each as may be credited to the Participant's Accounts) and cash
     equal to the amount of any uninvested cash, plus the value of the portions
     of the Participant's Accounts that are invested in all Investment Funds
     other than the MWD, Sears and Allstate Stock Funds, in such proportions as
     the Participant may elect and in the aggregate equal to the value of the
     portion of the Participant's Accounts being withdrawn.  Unless the
     Participant elects otherwise, payment will be made in accordance with
     clause (i) of the preceding sentence.  If a distribution is made in the
     form of shares

                                       10
<PAGE>

     of stock, any unpaid dividends which may be due with respect to such stock
     and any portion to be distributed representing fractional shares of such
     stock shall be paid in cash."

33.   Effective March 1, 2001, clause (i) of Section 12(g) of the START Plan
shall be amended by adding the phrase "prior to March 1, 2001" to the beginning
thereof.

34.  Effective March 1, 2001, clause (i) of Section 12(g) of the START shall be
amended by adding the following paragraph to the end thereof:

          `"In the case of a hardship withdrawal on or after March 1, 2001, the
     Plan Administrator shall withdraw assets from the Participant's Accounts in
     the order determined by the Plan Administrator on a uniform and
     nondiscriminatory basis in accordance with applicable law."

35.  Effective March 1, 2001, the last sentence of Subsection (ii)(B) of Section
12(h) of the START Plan shall be amended to read as follows:

          "Notwithstanding the foregoing, no loan shall be granted under this
     Section 12(h) in an amount less than $500; provided that, prior to March 1,
     2001, no loan shall be granted in an amount less than $1,000."

36.   Effective January 1, 2000, a new Subsection (xii) shall be added to
Section 12(h) of the START Plan to read as follows:

          "(xii)  Loan Procedures.  The Plan Administrator shall promulgate loan
                  ---------------
     procedures consistent with this Section 12, which, as amended from time to
     time, are hereby incorporated into and which hereby form a part of this
     Plan."

37.   Effective January 1, 1998, the first sentence of Subsection (i) of Section
13(b) of the START Plan shall be amended to read as follows:

        "(i)   Definitions.  For purposes of this Section 13, compensation shall
               -----------
     be determined on the basis of compensation actually paid and includible in
     gross income during the year, plus, for limitation years beginning after
     December 31, 1997, any elective deferrals or contributions made with
     respect to a Participant as described in Code section 415(c)(3)(D); the
     limitation year shall be the Plan Year; and excess amount shall mean the
     difference between a Participant's annual additions and the maximum
     permissible amount of such annual additions."

                                       11
<PAGE>

38.  Effective January 1, 2000, with respect to Participants, including retired
and terminated Participants who are entitled to or receiving benefits under the
START Plan, Section 13(b) of the START Plan is amended by adding the following
sentence to the end thereof:

          "This Subsection (iv) shall apply only for limitation years beginning
     before January 1, 2000."

39.  Effective January 1, 2001, Section 14(a) of the START Plan shall be amended
by adding the following to the end thereof:

          "The Plan Administrator shall have the power and the duty to take all
     actions and to make all decisions necessary or proper to carry out its
     responsibilities under the Plan.  The Plan Administrator shall have full
     power and authority to interpret and construe the Plan under all applicable
     documents related thereto, to make all factual determinations under the
     Plan, to determine benefit eligibility, and to take all such actions and
     make all such interpretations as may be necessary or advisable for the
     operation and administration of the Plan.  The determination of the Plan
     Administrator (or the Hearing Panel as provided in Section 17) as to any
     question involving the administration and interpretation of the Plan shall
     be final, conclusive and binding on all persons claiming to have a right or
     interest in or with respect to the Plan.  Such determinations may only be
     reversed under administrative or judicial review upon a finding that the
     Plan Administrator acted in an arbitrary and capricious manner.  Benefits
     under this Plan will be paid only if the Plan Administrator (or for matters
     referred to the Hearing Panel, the Hearing Panel) decides in his discretion
     that the applicant is entitled to them."

40.  Effective January 1, 2001, Section 14(d) of the START Plan shall be amended
by adding the following to the end thereof:

       "The Company, in its sole discretion, may appoint officers, employees or
     the same as members of a committee which shall be responsible for
     administration of the Plan to the extent determined by the Company and
     which shall acknowledge their fiduciary status with respect to such Plan
     administration."

41.  Effective January 1, 2001, Section 14(e) of the START Plan shall be amended
by deleting the phrase "(except `trustee responsibilities' as defined in section
405(c)(3) of ERISA)."

42.   Effective January 1, 2000, Sections 16 and 17 of the START Plan shall be
amended and  restated to read as follows:

          "SECTION 16 Claims Procedure.
           ---------------------------

                                       12
<PAGE>

                "(a)  Claims and Inquiries.  Effective January 1, 2000,
                      --------------------
          Sections 16 and 17 shall provide the exclusive rules relating to
          claims for benefits under the Plan. All claims for benefits and all
          inquiries concerning the Plan shall be submitted to the Plan
          Administrator at such address as the Plan Administrator shall
          designate from time to time. Claims for benefits must be in writing on
          the form prescribed by the Plan Administrator and must be signed by
          the person or persons indicated on such form.

                "(b)  Denial of Claims.  In the event any claim for benefits is
                      ----------------
          denied, in whole or in part, the Plan Administrator shall notify the
          claimant of such denial in writing and shall advise the claimant of
          his right to a review thereof. Such written notice shall set forth, in
          a manner calculated to be understood by the claimant, the specific
          reason or reasons for the denial, specific reference to the pertinent
          Plan provisions upon which the denial is based, a description of any
          additional information or material that is necessary for the claimant
          to perfect his claim for benefits, an explanation of why such
          information or material is necessary and an explanation of the Plan's
          review procedure. Such written notice shall be furnished to the
          claimant within 90 days after the Plan Administrator receives the
          claim, unless special circumstances require an extension of time for
          processing the claim. In no event shall such an extension exceed a
          period of 90 days from the end of the initial 90-day period; if such
          an extension is required, written notice thereof shall be furnished to
          the claimant before the end of the initial 90-day period. Such notice
          shall indicate the special circumstances requiring an extension of
          time and the date by which the Plan Administrator expects to render a
          decision. If written notice of the denial of the claim for benefits is
          not furnished within the time specified in this Section, the claim
          shall be deemed denied and the claimant shall be permitted to appeal
          such denial in accordance with the review procedure described in
          paragraph 17(b) below.

          "SECTION 17  Hearing Panel.
           -------------------------

                (a)  Establishment of Hearing Panel.  The Board of Directors
                     ------------------------------
          shall appoint a "Hearing Panel," which shall consist of three or more
          individuals who may (but need not) be employees of the Company.  The
          Hearing Panel shall be the named fiduciary that shall have the
          authority to act with respect to any appeal from the denial of a claim
          for benefits under the Plan.  The Hearing Panel may adopt such rules
          and procedures, consistent with ERISA and the Plan, as it deems
          necessary or appropriate in carrying out its responsibilities under
          Section 16 and this Section.  The Hearing Panel may delegate some or
          all of its rights, privileges and duties to such person(s) as it may
          choose; to the extent of such a delegation all

                                       13
<PAGE>

          references in this Section to the Hearing Panel shall be deemed to be
          references to such person(s).

                "(b)  Appeals from Claim Denials.  Any person whose claim for
                      --------------------------
          benefits is denied, in whole or in part, or such person's duly
          authorized representative, may appeal from such denial by submitting a
          request for review of the claim to the Hearing Panel within six months
          after receiving the written notice of denial from the Plan
          Administrator (or, in the case of a deemed denial, within six months
          after the claim is deemed denied). The Plan Administrator shall give
          the claimant (or his representative) an opportunity to review
          pertinent documents (except legally privileged materials) and to
          submit issues and comments in writing. A request for review shall be
          in writing and shall be submitted to the Hearing Panel at such address
          as the Plan Administrator shall designate from time to time. The
          request for review shall set forth all of the grounds on which it is
          based, all facts in support thereof and any other matters that the
          claimant deems pertinent. The Hearing Panel may require the claimant
          (or his representative) to submit such additional facts, documents or
          other material as it deems necessary or appropriate in making its
          review.

                "(c)  Decision on Review.  The Hearing Panel shall act upon a
                      ------------------
          request for review within 60 days after receipt thereof, unless
          special circumstances require an extension of time for processing, in
          which event a decision shall be rendered not more than 120 days after
          the receipt of the request for review. If such an extension is
          required, written notice thereof shall be furnished to the claimant
          (or his representative) before the end of the initial 60-day period.
          The Hearing Panel shall give written notice of its decision to the
          claimant (or his representative) and to the Plan Administrator. In the
          event that the Hearing Panel confirms the denial of the claim for
          benefits in whole or in part, such notice shall set forth, in a manner
          calculated to be understood by the claimant, the specific reason or
          reasons for the denial and specific reference to the pertinent Plan
          provisions upon which such denial is based. If written notice of the
          Hearing Panel's decision is not given to the claimant (or his
          representative) within the time prescribed in this Section 17(c), the
          claim shall be deemed denied on review.

                "(d)  Exhaustion of Administrative Remedies.  No legal or
                      -------------------------------------
          equitable action for benefits under the Plan shall be brought unless
          and until the claimant (i) has submitted a written claim for benefits
          in accordance with paragraph (a) of Section 16, (ii) has been notified
          that the claim has been denied (or the claim is deemed denied as
          provided in Section 16(b) above), (iii) has filed a written request
          for a review of the claim in accordance with paragraph (b) of this
          Section 17 and (iv) has been notified in writing that the Hearing
          Panel has affirmed the denial of the claim (or the claim is deemed
          denied on review as provided in

                                       14
<PAGE>

          Section 17(c) above). In addition, no legal or equitable action for
          benefits under the Plan may be brought after the earliest of (i) 120
          days after the Hearing Panel has affirmed the denial of the claim (or
          the claim is deemed denied on review as provided in Section 17(c)
          above), (ii) three years after the date the claimant's benefits under
          the Plan commenced, or (iii) the end of the otherwise applicable
          statute of limitations period.

                "(e)  Authority of Hearing Panel.  The Hearing Panel, in its
                      --------------------------
          capacity as "named fiduciary," as defined under section 402(a)(1) of
          ERISA, shall have the discretionary authority to interpret and
          construe the terms of the Plan and to determine eligibility for and
          entitlement to Plan benefits in accordance with the terms of the Plan.
          Any reasonable construction or interpretation of the Plan's terms or
          determination made by the Hearing Panel as to eligibility or
          entitlements, adopted in good faith, shall be final and binding upon
          the Company, all participating Employers, Employees, Participants,
          Spouses, Surviving Spouses, their affiliates and their heirs,
          successors and assigns."

43.   Effective August 5, 1997, the second sentence of Section 20(a) of the
START Plan shall be amended to read as follows:

          "Notwithstanding the foregoing, the following shall not constitute a
     violation of this Section 20(a):  (i) the creation, assignment or
     recognition of a right to all or any portion of a Participant's Plan
     Benefit made pursuant to a state domestic relations order, provided that
     such order is determined to be a "qualified domestic relations order" (as
     defined in Code section 414(p)) under written procedures adopted by the
     Plan Administrator or (ii) effective August 5, 1997, the required offset of
     a Participant's benefits pursuant to a judgment or settlement described in
     Code section 401(a)(13)(C)."

44.  Effective January 1, 2000, the definition of "Company Accounts" in Section
                                                   ----------------
21 of the START Plan is amended by adding the phrase "or Company Contribution
                                                         --------------------
Accounts" immediately following the term "Company Accounts".
--------                                  ----------------

45.  Effective January 1, 2000, the definition of "Credit Services Employee" in
                                                   ------------------------
Section 21 of the START Plan shall be amended by replacing the name "Novus
Credit Services Inc." with the name "Novus Financial Corporation" and all
references in the START Plan to "NCSI" shall be changed to "NFC".

46.   Effective April 10, 1997, all references in the START Plan to the name
"Dean Witter Discover Stock Fund" shall be replaced with the name "Morgan
--------------------------------
Stanley Dean Witter Stock Fund".

                                       15
<PAGE>

47.   Effective January 1, 2001, all references in the START Plan to the name
"Novus Financial Corporation" or "NFC" shall be replaced with the name "Morgan
Stanley Dean Witter Credit Corporation".

48.  Effective January 1, 1997, the last paragraph of the definition of
"Earnings" in Section 21 of the START Plan is amended to read as follows:
---------

          "For Plan Years beginning before January 1, 1997: (i) in determining
     the compensation of a Participant for purposes of this limitation, the
     rules of Code section 414(g)(6) shall apply, except that in applying such
     rules the term "family" shall include only the spouse of the Participant
     and the lineal descendants of the Participant who have not attained age 19
     before the close of the Plan Year and (ii) notwithstanding the foregoing,
     for purposes of determining whether an individual is a Highly Compensated
     Employee or a member of the Top Paid Group, Earnings shall be determined
     without regard to the limits imposed by Code section 401(a)(17)."

49.  Effective January 1, 1997, the definition of "Excess Aggregate
                                                   ----------------
Contributions" in Section 21 of the START Plan is amended to read as follows:
-------------

          " `Excess Aggregate Contributions' means:
             -------------------------------

          (i)   with respect to Plan Years beginning before January 1, 1997, the
          amount by which Contributions made by or on behalf of Highly
          Compensated Employees exceed the limits described in Code section
          401(m)(2).  The amount of Excess Aggregate Contributions shall be
          determined by first reducing the Actual Contribution Ratio ("ACR"), as
          defined by Code section 401(m)(3) and regulations thereunder, of the
          Highly Compensated Employee with the highest ACR to the extent
          necessary to satisfy the ACP test described in Section 5(h) or to
          cause such ratio to equal the ACR of the Highly Compensated Employee
          with the next highest ACR and, second, repeating this process until
          the ACP test is satisfied.  The amount of Excess Aggregate
          Contributions for a Highly Compensated Employee is then equal to the
          total of the Highly Compensated Employee's contributions taken into
          account for purposes of the ACP test minus the product of the Highly
          Compensated Employee's reduced ACR as determined above and the Highly
          Compensated Employee's Earnings.  In the case of a Highly
          Compensated Employee whose ACR is determined under the family
          aggregation rules, the determination of the amount of Excess Aggregate
          Contributions shall be made by allocating the Excess Aggregate
          Contributions determined under the "leveling" method described herein
          among the Family members in proportion to the Contributions of each
          Family member taken into account for purposes of the ACP test."

                                       16
<PAGE>

          (ii)   with respect to Plan Years beginning on or after January 1,
          1997, the aggregate amount by which the amount of Contributions made
          by or on behalf of Highly Compensated Employees which are taken into
          account for purposes of the ACP test exceeds the maximum amount of
          such Contributions permitted in Section 5(h) and in Code section
          401(m)(2).  The maximum amount of such Contributions shall be
          determined by hypothetically reducing the Contributions made by or on
          behalf of Highly Compensated Employees in order of their Actual
          Contribution Ratios ("ACRs"), as defined by Code section 401(m)(3) and
          regulations thereunder, beginning with the highest of such ACRs.
          Excess Aggregate Contributions for a Plan Year shall be allocated to
          Highly Compensated Employees in accordance with Code section
          401(m)(6)(C), on the basis of the largest dollar amounts of such
          Contributions taken into account for purposes of the ACP test for the
          Plan Year, beginning with the highest such dollar amounts."

50.   Effective January 1, 1997, with respect to Plan Years beginning on or
after such date, the definition of "Excess Contributions" in Section 21 of the
                                    --------------------
START Plan shall be amended to read as follows:

       " `Excess Contributions' means:
          ---------------------

       (i) with respect to Plan Years beginning before January 1, 1997, the
       amount by which Contributions made by or on behalf of Highly Compensated
       Employees exceed the limits described in Code section 401(k)(3).  The
       amount of Excess Contributions shall be determined by first reducing the
       Actual Deferral Ratio ("ADR") as defined by Code section 401(k)(3)(B) and
       regulations thereunder of the Highly Compensated Employee with the
       highest ADR to the amount necessary to satisfy the ADP test described in
       Section 5(f) or cause such ratio to equal the ADR of the Highly
       Compensated Employee with the next highest ADR and, second, repeating
       this process until the ADP test is satisfied. The amount of Excess
       Contributions for a Highly Compensated Employee is then equal to the
       total of Elective Deferrals and other Contributions taken into account
       for the ADP test minus the product of the Highly Compensated Employee's
       reduced ADR as determined above and the Highly Compensated Employee's
       Earnings. In the case of a Highly Compensated Employee whose ADR is
       determined under the family aggregation rules, the determination of the
       amount of Excess Contributions shall be made by allocating the Excess
       Contributions determined under the "leveling" method described herein
       among the Family members in proportion to the Contributions of each
       Family member taken into account for purposes of the ADP test, and

       "(ii)   with respect to Plan Years beginning on or after January 1, 1997,
       the aggregate amount by which the amount of Contributions made by or on
       behalf of Highly
                                       17
<PAGE>

       Compensated Employees which are taken into account for purposes of the
       ADP test exceeds the maximum amount of such Contributions permitted in
       Section 5(f) and in Code section 401(k)(3). The maximum amount of such
       Contributions shall be determined by hypothetically reducing the
       Contributions made by or on behalf of Highly Compensated Employees in
       order of their Actual Deferral Ratios ("ADRs"), as defined by Code
       section 401(k)(3)(B) and regulations thereunder, beginning with the
       highest of such ADRs. Excess Contributions for a Plan Year shall be
       allocated to Highly Compensated Employees in accordance with Code section
       401(k)(8)(C), on the basis of the largest dollar amounts of such
       Contributions taken into account for purposes of the ADP test for the
       Plan Year, beginning with the highest such dollar amounts."

51.   Effective January 1, 1997, the definition of "Highly Compensated Active
                                                    -------------------------
Employee" in Section 21 of the START Plan is amended to read as follows:
--------

          "`Highly Compensated Active Employee' means for Plan Years beginning
            ----------------------------------
       before December 31, 1996, a "Highly Compensated Active Employee" as
       defined under the Plan as in effect for such Plan Year. For Plan Years
       beginning after December 31, 1996 and on or prior to December 31, 1999,
       "Highly Compensated Active Employee" shall mean any Employee who (i) was
       a 5% owner (as defined in Code section 416(i)(1)) during the Plan Year or
       the preceding Plan Year or (ii) for the preceding Plan Year had
       compensation (within the meaning of Code section 414(q) as in effect for
       the Plan Year of determination) from the Company or an Affiliated Group
       member in excess of $80,000, as adjusted by the Secretary of the Treasury
       or a delegate thereof in accordance with Code section 414(q). For Plan
       Years beginning after December 31, 1999, a "Highly Compensated Active
       Employee" shall mean any Employee who (i) was a 5% owner (as defined in
       Code section 416(i)(1)) during the Plan Year or the preceding Plan Year
       or (ii) for the preceding Plan Year had compensation (within the meaning
       of Code section 414(q) as in effect for the Plan Year of determination)
       from the Employer or an Affiliated Group member in excess of $80,000, as
       adjusted by the Secretary of the Treasury or a delegate thereof in
       accordance with Code section 414(q), and was in the Top Paid Group of
       Employees for such preceding Plan Year. Notwithstanding anything
       contained herein to the contrary, solely for the purpose of determining
       the Employees who are Highly Compensated Active Employees for the 1997
       Plan Year, the definition of Highly Compensated Active Employee in effect
       for the 1997 Plan Year will be treated as having been in effect for the
       1996 Plan Year. For purposes of the definition of "Highly Compensated
       Active Employee," Employee shall not include a non-resident alien who
       receives no earned income from sources within the United States."

52.  Effective January 1, 1997, the definition of "Highly Compensated Former
                                                   -------------------------
Employee" in Section 21 of the START Plan shall be amended to read as follows:
--------

                                       18
<PAGE>

             "`Highly Compensated Former Employee' means a former Employee who
               ----------------------------------
     was a Highly Compensated Active Employee at the time of his Severance Date
     or was a Highly Compensated Active Employee at any time after attaining age
     55.  For these purposes, the "Severance Date" means the date the Employee
     separates from service within the meaning of Code section 414(q)(6)(A).
     For Plan Years beginning prior to January 1, 1997, the definition of Highly
     Compensated Former Employee shall be determined under the terms of the Plan
     as in effect at the time of determination."

53.   Effective January 1, 2001, the definition of "Immediately Eligible
                                                    --------------------
Employee" shall be amended by adding the phrase "prior to March 1, 2001, and at
--------
least 20 Hours of Service a week on or after March 1, 2001" immediately
following the phrase "at least 30 Hours of Service a week" in the first sentence
thereof.

54.   Effective January 1, 1997, the first sentence in the definition of "Leased
                                                                          ------
Employee" in Section 21 of the START Plan shall be amended to read as follows:
--------

             " `Leased Employee' means, for Plan Years beginning before January
                ---------------
     1, 1997, a Leased Employee as defined under the Plan as in effect for such
     Plan Year, and for Plan Years beginning on or after January 1, 1997, any
     person (other than an employee of the recipient) who pursuant to an
     agreement between the recipient and any other person has performed services
     for the recipient (or for the recipient and related persons determined in
     accordance with Code section 414(n)(6)) on a substantially full time basis
     for a period of at least one year, and whose services are performed under
     the primary direction and control of the recipient within the meaning of
     Code section 414(n)(2)(C)."

55.   Effective January 1, 1997, the definition of "Top Paid Group" in Section
                                                    --------------
21 of the START Plan shall be amended by adding the phrase "for Plan Years
beginning prior to January 1, 1997," immediately prior to the phrase "the top
twenty percent of employees who performed services for the Affiliated Group" and
by adding the following paragraph to the end thereof to read as follows:

             "For Plan Years beginning on or after January 1, 1997, the
     "Top Paid Group" means those Employees who are included in the group
     --------------
     consisting of the top 20% of the employees of the Company and its
     Affiliated Group members when ranked on the basis of compensation paid
     during the Plan Year, as determined in accordance with Code section
     414(q)(3). For these purposes, (i) employees of an Affiliated Group member
     shall include employees of any entity that would be taken into account
     pursuant to Code section 414(q)(7); and (ii) the number of employees in the
     Top Paid Group of Employees shall be determined by excluding a person who
     has not completed at least six months of service, normally works less than
     17 1/2 hours each week, normally works less than six months during a Plan
     Year, has not attained age 21, is a non-resident alien and receives

                                       19
<PAGE>
     no earned income from sources within the United States, or, except to the
     extent required to be included by Code section 414(q), who is included in a
     unit of employees covered by a collective bargaining agreement."

56.   Effective January 1, 2001, the definition of "Participating Company" in
                                                    ---------------------
Section 21 of the START Plan shall be amended by adding the following sentence
to the end thereof:

"A list of Participating Companies, and the respective dates of their
     participation in the START Plan, is attached hereto as Appendix A."

57.   Effective January 1, 1997, Section 21 of the START Plan is amended by
adding the definition of "Pre-Tax Contributions" as follows:
                          ---------------------

          " `Pre-Tax Contributions' means Basic Pre-Tax Contributions and
             ---------------------
     Supplemental Pre-Tax Contributions."

58.   Effective March 1, 2001, the definition of "Valuation Date" in Section 21
                                                  --------------
of the START Plan shall be amended to read as follows:

          " `Valuation Date' means (i) before March 1, 2001, the last day of any
             --------------
     Quarter on which the New York Stock Exchange was open and Stock was traded
     and such other dates as the Plan Administrator shall determine, and (ii) on
     and after March 1, 2001, each day on which the New York Stock Exchange is
     open and such other dates as the Plan Administrator shall determine."

59.  Effective January 1, 2001, the START Plan shall be amended by adding a new
Appendix A to read as follows:

                                  "APPENDIX A
                            "PARTICIPATING COMPANIES
                            ------------------------

       "Participating Companies
        -----------------------

       "Dean Witter Futures and Currency Management ("FCM") Inc.

       "Morgan Stanley Dean Witter Advisors Inc., fka Dean Witter Intercapital
        Inc.

       "Dean Witter Realty Inc.

       "Dean Witter Reynolds Inc.

       "Morgan Stanley Dean Witter Bank, fka Mountainwest Financial Corp.

       "Morgan Stanley Dean Witter Distributors Inc., fka Dean Witter
       Distributors Inc.

                                       20
<PAGE>

       "Morgan Stanley Dean Witter Services Company Inc., fka Dean Witter
       Services Co. Inc.

       "Morgan Stanley Dean Witter Trust FSB, fka Dean Witter Trust FSB

       "Morgan Stanley Dean Witter Commercial Financial Services, Inc.,
       effective January 1, 2001

       "Morgan Stanley Dean Witter Online Inc., effective May 1, 2000 through
       October 31, 2000

       "Morgan Stanley Dean Witter Credit Corporation, fka Novus Financial
       Corporation, effective January 1, 2000 through December 31, 2000

       "Discover Financial Services, Inc., fka Novus Services, Inc.
       "Discover Bank, fka Greenwood Trust Company
       "Morgan Stanley Dean Witter Bank, formerly Mountain West Financial
       Corporation

       "Novus Credit Services Inc.'

60.   Effective January 1, 2000, Section 1(5) of Supplement C of the START Plan
shall be amended by adding the following sentence to the end thereof:

          "This Section 1(5) shall apply only for limitation years beginning
     before January 1, 2000."

61.   Effective January 1, 1998, Section 3(b) of Supplement C of the START Plan
shall be amended by adding the following phrase at the end of the sentence:

     "plus, for Plan Years beginning after December 31, 1997, any elective
        deferrals or contributions made with respect to a Participant as
        described in Code section 415(c)(3)(D)".

62.   Effective January 1, 1998, Section 3(d) of Supplement C of the START Plan
shall be amended by modifying the third-to-the-last sentence thereof to read as
follows:

          `Annual Compensation' means Compensation as defined in Code section
     415(c)(3), including, for Plan Years beginning before January 1, 1998,
     amounts contributed by the Company or a Participating Company pursuant to a
     salary reduction

                                       21
<PAGE>

     agreement which are excludable from the Employee's gross income under Code
     sections 125, 402(a)(8), 402(h) or 403(b).

63.   Effective January 1, 2001, Supplement D of the START Plan shall be
restated in its entirety as set forth on "Restated Supplement D" attached hereto
as Exhibit A.

64.   Effective January 1, 2001, the START Plan shall be amended by adding a new
Supplement F to the end thereof to read as follows:

                   "SUPPLEMENT F:  RULES RELATING TO CERTAIN
                              GROUPS OF EMPLOYEES

       "MSDW Online:  With respect to employees of MSDW Online and its
     subsidiaries (collectively, "MSDW Online"), the following rules shall
     apply:  As of May 1, 2000, employees of MSDW Online who otherwise meet the
     eligibility rules of the Plan (taking into account the provisions of this
     Supplement F), shall be Employees, Eligible Employees or Immediately
     Eligible Employees, as the case may be, under the terms of this Plan, and
     MSDW Online (including each of its subsidiaries) shall be a Participating
     Company in the Plan.  Effective May 1, 2000, in the case of an employee who
     was an employee of MSDW Online prior to such date, Years of Service for
     periods prior to May 1, 2000, shall be determined by applying the rules of
     Section 3 to that period of employment.  Notwithstanding the foregoing,
     Employees who were participants in the Discover Brokerage Direct 401(k)
     Profit Sharing Plan (the "MSDW Online Plan") as of April 30, 2000 will
     automatically become Participants in the Plan on May 1, 2000, and shall be
     subject to the following transition rules:  such Employees' deferral
     elections under the MSDW Online Plan on April 30, 2000, shall be given
     effect under the Plan on and after May 1, 2000, subject to the provisions
     of Section 5(c) of the Plan;  the vested portion of each such Employee's
     Matching Contribution Account shall be determined solely in accordance with
     the otherwise applicable provisions of the Plan, taking into account his or
     her service rendered to MSDW Online prior to May 1, 2000 to the extent
     provided above;  for purposes of determining the amount of Matching
     Contributions and forfeitures, if any, to be allocated to such Employees
     for the Plan Year ending December 31, 2000, such Employee's elective
     deferrals to the MSDW Online Plan during the period beginning January 1,
     2000 and ending December 31, 2000 (in addition to deferrals under the START
     Plan during such period), shall be taken into account as Basic and
     Supplemental Pre-Tax Contributions, subject to the limitations set forth in
     the Plan.

       "In addition, for purposes of determining the amount of Matching
     Contributions and forfeitures, if any, to be allocated for Plan Years
     ending on or after December 31, 2000, with respect to Participants who are
     employees of MSDW Online, MSDW Online shall be considered a member of the
     "Securities" Business Segment.

                                       22
<PAGE>

       "Effective as of the end of February 28, 2001, contingent on the receipt
     of a favorable determination from the Internal Revenue Service, the MSDW
     Online Plan shall be merged with and into the Plan.  Prior to such merger
     on February 28, 2001, the contributions, benefits, and other rights of
     Participants who were participants in the MSDW Online Plan are determined
     under the terms of the MSDW Online Plan as in effect prior to its merger
     into the Plan. Any person who was covered under the MSDW Online Plan prior
     to its merger into the Plan and who was entitled to benefits under the
     provisions of such plans as in effect on February 28, 2001 shall continue
     to be entitled to the same amount of accrued benefits without change under
     this Plan; provided, however, that the forms of distribution (including for
     these purposes the time, manner and medium of distribution) available with
     respect to such accrued benefits shall be the forms of distribution
     available under the otherwise applicable provisions of the Plan plus such
     forms of distribution as may be required to be provided under Code section
     411(d)(6)."

     "MSDW Commercial Financial Services, Inc.: With respect to employees of
     MSDW Commercial Financial Services, Inc. ("CFS"), the following rules shall
     apply:  As of January 1, 2001, employees of CFS who otherwise meet the
     eligibility rules of the Plan (taking into account the provisions of this
     Supplement F), shall be Employees, Eligible Employees or Immediately
     Eligible Employees, as the case may be, under the terms of this Plan, and
     CFS shall be a Participating Company in the Plan.  Effective January 1,
     2001, in the case of an employee who was an employee of a member of the
     Affiliated Group prior to such date, Years of Service shall include, for
     vesting and eligibility purposes, service  performed for such member of the
     Affiliated Group, determined with respect to the rules for crediting
     service under this Plan.

       "In addition, for purposes of determining the amount of Matching
     Contributions and forfeitures, if any, to be allocated for Plan Years
     ending on or after December 31, 2001, with respect to Participants who are
     employees of CFS, CFS shall be considered a member of the "Securities"
     Business Segment."

                              *******************

     IN WITNESS WHEREOF, the undersigned has hereunder set his hand as of the
     1st day of January, 2001.

                                    DEAN WITTER REYNOLDS INC.

                                    By:   /s/ Michael T. Cunningham
                                          -------------------------

                                       23
<PAGE>

                                                                       Exhibit A
                             DEAN WITTER START PLAN
                             ----------------------

                   (Saving Today Affords Retirement Tomorrow)
                                  SUPPLEMENT D

                                  ------------
                      (Restated effective January 1, 2001)
                      -

                      PARTICIPANTS RESIDING IN PUERTO RICO
                      ------------------------------------

     1.  Establishment and Purpose. This Supplement D is established effective
         -------------------------
July 1, 1990  and amended and restated effective as of January 1, 2001 to
provide for the inclusion of Puerto Rico resident employees of Dean Witter
Reynolds, Inc. (in Puerto Rico) and of Dean Witter Puerto Rico, Inc. in the Plan
and to provide for compliance with the provisions of the Puerto Rico Code.  Such
employees will be subject to the provisions of the Plan to which this Supplement
D is attached, in addition to the provisions of this Supplement D.  Except as
otherwise provided herein, the terms of  Supplement D as in effect prior to
January 1, 2001 shall apply to determinations made prior to January 1, 2001.

     2.   New Definitions. For the purposes of this Supplement, certain terms
          ---------------
are defined and added to Section 21 of the Plan document to which this
Supplement is attached.  Except as provided in paragraph 3 of this Supplement D,
any other capitalized term has the meaning assigned to it in Section 21 of the
Plan document.

                                       24
<PAGE>

     "Puerto Rico Code" means the Puerto Rico Internal Revenue Code of 1994, as
      ----------------
amended from time to time.

     "Puerto Rico Eligible Employee" means any Eligible Employee who is a
      -----------------------------
resident of Puerto Rico.

     "Puerto Rico Highly Compensated Employee" means any Employee residing in
      ---------------------------------------
Puerto Rico who is "highly compensated" within the meaning of Section
1165(e)(3)(E)(iii) of the Puerto Rico Code.

     "Puerto Rico Participant" means an individual described in Section 2 of the
      -----------------------
Plan document and who is a resident of Puerto Rico.

     3.   Altered Definitions. For the purposes of this Supplement only, certain
          -------------------
definitions contained in Section 21 of the Plan document are altered as follows:

          (a)  "Earnings" for a Puerto Rico Participant means the sum of: (i)
                --------
total compensation paid to the Employee by any Participating Company which is
subject to tax under the Puerto Rico Code and excludes any such compensation
paid to the Employee for any period prior to the date he or she becomes a
Participant or for any period during which he or she is not an Eligible
Employee; plus (ii) any amounts contributed to the Plan by such Employee as
Basic Pre-Tax and Supplemental Pre-Tax Contributions.  Effective January l,
1994, the annual total compensation of a Participant that may be taken into
account under the Plan as Earnings for any Plan Year shall not exceed $150,000,
on such other amounts required under Code Section 401(a)(17) as adjusted by the
Commissioner of Internal Revenue for increases in the cost-of-

                                       25
<PAGE>

living in accordance with Code Section 401(a)(17). For Plan Years beginning
before January 1, 1997, in determining the compensation of a Participant for
purposes of this limitation the rules of Section 414(q)(6) of the Code shall
apply, except that in applying such rules the term "family" shall include only
the spouse of the Participant and the lineal descendants of the Participant who
have not attained age 19 before the close of the Plan Year.

          (b)  "Elective Deferrals" means elective deferrals within the meaning
                ------------------
of Section 402(g)(3) of the Code and Article 1165-8(g)(2) of the Regulation
issued under Section 1165(e) of the Puerto Rico Code.

          (c)  "Employee" means any individual employed by any member of the
                --------
Affiliated Group or any other employer required to be aggregated with any member
of the Affiliated Group under Sections 414(b), (c), (m) or (o) of the Code.  The
term "Employee" shall also include any Leased Employee deemed to be an employee
of such employer as provided in Section 414(n) or (o) of the Code.  The term
"Employee" shall also include any employee of Dean Witter Reynolds, Inc.
resident in Puerto Rico or any employee of Dean Witter Puerto Rico, Inc.

          (d)  "Excess Contributions" for a Puerto Rico Participant shall be
                --------------------
determined by substituting the phrase "Puerto Rico Highly Compensated Employee"
for the phrase "Highly Compensated Employee"; by substituting the corresponding
Section of the Puerto Rico Code for each Section of the Code and without regard
to the family aggregation rule included in the last sentence of the definition
of "Excess Contributions" in Section 21 of the Plan document.

                                       26
<PAGE>

          (e) "Excess Elective Deferrals" means those Elective Deferrals that
               -------------------------
are includible in the Puerto Rico Participant's gross income under Section
402(g) of the Code or under Section 1165(e)(7) of the Puerto Rico Code to the
extent that such Puerto Rico Participant's Elective Deferrals for a taxable year
exceed the dollar limitation under such respective section.

          (f) "Participant" means an individual so described in Section 2 of the
               -----------
Plan including any such individual who resides in Puerto Rico.

     4.   Revised Section 4(c) Payment of Company Contributions. For the
          -----------------------------------------------------
purposes of this Supplement only, Section 4(c) will read as follows:

          (c) Payment of Company Contributions. The portion of the Company
              --------------------------------
Contribution to be made by each Participating Company in Puerto Rico for each
Plan Year shall be determined by the Company and shall be paid to the Trustee at
such time or times as the Participating Company in Puerto Rico shall determine,
but in any event before the date for filing such Participating Company's Puerto
Rico income tax return for the Plan Year, including any extension of such date.

     5. Revised Section 5 Employee Contributions. For the purposes of this
        -----------------------------------------
Supplement only, Sections 5(a), (b), (c), (d), (e), (f), (g), (j), (k) and (l)
of the Plan document will read as follows and Sections 5(h) and (i) will not be
applicable (for purposes of compliance with the Puerto Rico Code):

     SECTION 5:  Employee Contributions.
                 ----------------------

                                       27
<PAGE>

          (a)  Basic Contributions and Supplemental Pre-Tax Contributions. Each
               ----------------------------------------------------------
Puerto Rico Participant who is an Eligible Employee may make Basic Contributions
to the Plan equal to 2%, 4% or 6% of Earnings for the Plan Year. Except to the
extent provided in Section 5(b) below, each Puerto Rico Participant's Basic
Contributions shall constitute Basic Pre-Tax Contributions. A Puerto Rico
Participant who is not a Puerto Rico Highly Compensated Employee and who is
making Basic Pre-Tax Contributions equal to 6% of Earnings may also elect to
make Supplemental Pre-Tax Contributions to the Plan equal to any whole
percentage, from 1% to 4% of Earnings.

          Notwithstanding the foregoing provisions of this Section 5(a),
effective January 1, 2001: each Puerto Rico Participant who is an Eligible
Employee may make Basic Pre-Tax Contributions to the Plan for any year equal to
any whole percentage from 1% to 10% of the Puerto Rico Participant's Earnings
for such year and no additional Supplemental Pre-Tax Contributions shall be
permitted; a Puerto Rico Participant may make After-Tax Contributions equal to
any whole percentage from 1% - 10% of the Puerto Rico Participant's Earnings;
provided that a Puerto Rico Participant's combined Pre-Tax Contributions and
After-Tax Contributions do not exceed 17% of the Puerto Rico Participant's
Earnings; the Plan Administrator may at any time and from time to time limit the
amount of Basic Pre-Tax Contributions allowed to be made by some or all Eligible
Employees to ensure compliance with applicable nondiscrimination or other rules,
provided, however, that in no event shall any such limitation restrict employees
that are not Puerto Rico Highly Compensated Employees to any

                                       28
<PAGE>

greater extent than similarly situated individuals that are Puerto Rico Highly
Compensated Employees.
          (b)  Basic After-Tax Adjustment Contributions. In order that the Plan
               ----------------------------------------
may comply with the requirements of Sections 401(k) and 415 of the Code and the
regulations thereunder and with the requirements of Section 1165(e) of the
Puerto Rico Code and the regulations thereunder, at any time during the Plan
Year the Plan Administrator (at its sole discretion) may reduce the rate at
which any Puerto Rico Participant who is a Puerto Rico Highly Compensated
Employee may contribute Basic Pre-Tax Contributions, or discontinue all such
contributions, for the remainder of such Plan Year. Such a reduction or
discontinuance may be applied selectively to individual Puerto Rico Participants
who are Puerto Rico Highly Compensated Employees or to Particular classes of
Puerto Rico Participants who are Puerto Rico Highly Compensated Employees, as
the Plan Administrator may determine. Any Puerto Rico Participant whose Basic
Pre-Tax Contributions are reduced or discontinued under this Section 5(b) shall
make Basic After-Tax Adjustment Contributions to the Plan during the remainder
of the Plan Year equal to the Percentage of the Puerto Rico Participant's
Earnings that the Plan Administrator has determined cannot be made as Basic Pre-
Tax Contributions; provided, that in order that the Plan may comply with the
requirements of Section 401(m) of the Code and the regulations thereunder, at
any time during the Plan Year the Plan Administrator (at its sole discretion)
may reduce the rate at which a Puerto Rico Participant may contribute Basic
After-Tax Adjustment Contributions, or discontinue all such contributions, for
the remainder of such Plan Year. Any reduction or discontinuance of Basic Pre-
Tax or Basic After-Tax Adjustment

                                      29

<PAGE>

Contributions made pursuant to this Section 5(b) shall automatically cease to
apply upon the close of the Plan Year in which it is made, or on such earlier
date in such Plan Year as the Plan Administrator may determine.

          (c)  Changing the Rate and Suspension of Basic Contributions and/or
               --------------------------------------------------------------
Supplemental Pre-Tax Contributions. As of the beginning of any Quarter, a Puerto
----------------------------------
Rico Participant may elect to change the rate of Basic Pre-Tax Contributions
and/or any Supplemental Pre-Tax Contributions to any other rate that is within
the limitations described in Sections 5(a) and 5(b) provided, however, that the
Plan Administrator shall have the discretion to permit Puerto Rico Participant's
to make one or more additional elections, provided, further, that the right to
make such additional elections are made available to all Puerto Rico
Participants on a nondiscriminatory basis. If a Puerto Rico Participant elects
to reduce the rate of his or her Basic Pre-Tax Contributions to a rate that is
below 6%, any Supplemental Pre-Tax Contributions being made by the Puerto Rico
Participant shall automatically cease on the effective date of such election. If
a Puerto Rico Participant is making Basic After-Tax Adjustment Contributions,
and he or she elects to reduce the rate of his or her Basic Contributions, and
if, as a result of such election, the Plan Administrator determines that it is
no longer necessary for the Puerto Rico Participant to make some or all of such
Basic After-Tax Adjustment Contributions, the appropriate amount of the Puerto
Rico Participant's Basic After-Tax Adjustment Contributions shall automatically
cease, effective as of the effective date of his or her election to change the
rate of his or her Basic Contributions. As of any pay period, the Puerto Rico
Participant may elect to discontinue all Supplemental Pre-Tax Contributions
and/or Basic Pre-Tax Contributions,

                                       30
<PAGE>

provided however, that an election to discontinue Basic Pre-Tax Contributions
shall automatically discontinue any Supplemental Pre-Tax Contributions.

          (d)  Maximum Amount of Elective Deferrals. Notwithstanding anything to
               ------------------------------------
the contrary herein, the amount of Elective Deferrals made with respect to any
individual during a calendar year under the Plan and all other plans, contracts
or arrangements of any member of the Affiliated Group may not exceed the amount
of the limitation in effect under Section 402(g)(1) of the Code and Section
1165(e) (7) of the Puerto Rico Code for taxable years beginning in such calendar
year.

          (e)  Distribution of Excess Elective Deferrals. A Puerto Rico
               -----------------------------------------
Participant may assign to the Plan any Excess Elective Deferrals made during a
taxable year of the Puerto Rico Participant by notifying the Plan Administrator
on or before March 1 following the close of such taxable year of the amount of
the Excess Elective Deferrals to be assigned to the Plan. Notwithstanding any
other provision of the Plan, Excess Elective Deferrals, plus any income and
minus any loss allocable thereto, shall be distributed no later than April 15
following such taxable year to any Puerto Rico Participant to whose account
Excess Elective Deferrals were assigned for the preceding year and who claims
Excess Elective Deferrals for such taxable year.

          (f)  Actual Deferral Percentage Test.
               -------------------------------

               (1) Elective Deferrals for Puerto Rico Participants shall not
exceed the limits set forth in Section 1165(e)(3) of the Puerto Rico Code. For
purposes of applying such limits, Section 1165(e)(3) of the PR Code and the
regulations thereunder are incorporated by reference and are hereinafter
referred to as the "PR ADP Test".

                                       31
<PAGE>

               (2) All or part of the Qualified Matching Contributions and
Qualified Non-Elective Contributions made with respect to any or all Puerto Rico
Eligible Employees may be treated as Elective Deferrals for purposes of the PR
ADP Test provided that each of the following requirements is met:

                   (i) the nonelective contributions, including Qualified Non-
Elective Contributions treated as Elective Deferrals for purposes of the PR ADP
Test, satisfy the requirements of PR Code section 1165(a)(4);

                   (ii)   the nonelective contributions, excluding Qualified
Non-Elective Contributions treated as Elective Deferrals for purposes of the PR
ADP Test, satisfy the requirements of PR Code section 1165(a)(4);

                   (iii)  the matching contributions, including Qualified
Matching Contributions treated as Elective Deferrals for purposes of the PR ADP
Test, satisfy the requirements of PR Code section 1165(a)(4);

                   (iv)   the matching contributions, excluding Qualified
Matching Contributions treated as Elective Deferrals for purposes of the PR ADP
Test, satisfy the requirements of PR Code section 1165(a)(4) ;

                   (v)    all such Qualified Non-Elective Contributions and
Qualified Matching Contributions are nonforfeitable when made and subject to the
same distribution restrictions that apply to Elective Deferrals, without regard
to whether such Qualified

                                       32
<PAGE>

Non-Elective Contributions and Qualified Matching Contributions are actually
taken into account as Elective Deferrals;

                   (vi)   all such Qualified Non-Elective Contributions and
Qualified Matching Contributions are allocated to the accounts of Puerto Rico
Eligible Employees as of a date within the Plan Year (pursuant to Regulations
section 1.401(k)-1(B)(4)(i)(A)) as if such contributions were Elective
Deferrals; and

                   (vii)  for Plan Years beginning after December 31, 1988, if
the Plan uses the provisions of subsection 5(f)(2) of this Supplement D for
purposes of the PR ADP Test, then, for purposes of PR Code section 1165(a)(3)
(other than the average benefit percentage test), the Plan may be aggregated
with other plans of the Affiliated Group (determined with reference to PR Code
section 1028) to which the qualified nonelective contributions and qualified
matching contributions are made.

          (g)  Distribution of Excess Contributions.
               ------------------------------------

               (1)  Notwithstanding any other provision of the Plan, Excess
Contributions, plus any income and minus any loss allocable thereto, shall be
distributed no later than the last day of any Plan Year beginning after December
31, 1987 to Puerto Rico Participants to whose accounts Basic Pre-Tax, Qualified
Matching and Qualified Non-Elective Contributions were allocated for the
preceding Plan Year. The Excess Contributions shall be adjusted for income or
loss up to the date of distribution. The income or loss allocable to Excess
Contributions shall be determined by multiplying the income or loss allocable to
the Puerto Rico Participant's Basic Pre-Tax, Supplemental Pre-Tax, Qualified
Matching and Qualified Non-

                                       33
<PAGE>

Elective Contributions for the Plan Year allocated to the Puerto Rico
Participant by a fraction, the numerator of which is the Excess Contribution for
the Preceding Plan Year and the denominator of which is the sum of the Puerto
Rico Participant's account balances attributable to Basic Pre-Tax, Supplemental
Pre-Tax, Qualified Matching and Qualified Non-Elective Contributions on the last
day of the preceding Plan Year. Amounts distributed under this Section 5(g)
shall be made from the Puerto Rico Participant's Basic Pre-Tax, Qualified-
Matching and Qualified Non-Elective Contribution Accounts in proportion to the
Participant's Basic Pre-Tax, Qualified Matching and Qualified Non-Elective
Contributions for the Plan Year.

               (2)  A Puerto Rico Participant may treat Excess Contributions as
an amount distributed to the Puerto Rico Participant and then contributed by the
Puerto Rico Participant to the Plan as Basic After-Tax Adjustment Contributions.
Such re-characterized
amounts will remain nonforfeitable and subject to the same distribution
requirements as Supplemental Pre-Tax Contributions. Amounts may not be re-
characterized by a Puerto Rico Highly Compensated Employee to the extent that
such amount in combination with other Basic After-Tax Adjustment would exceed
10% of the Puerto Rico Highly Compensated Employee's Earnings for the Plan Year.
Re-characterization must occur no later than two and one-half months after the
last day of the Plan Year in which the Excess Contributions arose and is deemed
to occur no earlier than the date the last Puerto Rico Highly Compensated
Employee is informed in writing of the amount which may be recharacterized and
the consequences thereof.

               (3) The amount of Excess Contributions to be distributed under
Subsection 5(g)(1) or recharacterized under Subsection 5(g)(2) shall be reduced
by Excess
                                       34
<PAGE>

Elective Deferrals previously distributed under Section 5(e) for the
Puerto Rico Participant's taxable year ending with or within the Plan Year for
which such Excess Contributions were made.

          (j) Payroll Deductions. All Basic Contributions and Supplemental Pre-
              ------------------
Tax Contributions shall be made solely through periodic payroll deductions,
unless the Plan Administrator consents to another method of payment. All Basic
Contributions and Supplemental Pre-Tax Contributions withheld during any
calendar month shall be paid to the Trustee not later than the last day of the
next following month and shall be credited to the appropriate Employee Accounts
as soon as practicable thereafter.

          (k)  Salary Reduction and Tax Status of Pre-Tax Contributions. For
               --------------------------------------------------------
Federal and Puerto Rico tax purposes, Basic Pre-Tax Contributions and
Supplemental Pre-Tax Contributions shall be deemed to be Company Contributions
to the Plan, and a Puerto Rico Participant's election to make such contributions
shall constitute an election to have the amount of his or her compensation that
otherwise would have been reported as taxable compensation on Form W-2/PR
reduced by the amount of such contributions.

          (l)  Administrative Procedures. The Plan Administrator may require
               -------------------------
Puerto Rico Participants to complete and file such forms, within such time
periods as it shall determine, before any election under this Section 5 may take
effect.

     6. Revised Section 6 Amendment and Termination of This Supplement. For the
        ---------------------------------------------------------------
purposes of this Supplement only, Section 6 of the Plan document will read as
follows:

                                       35
<PAGE>

     SECTION 6.   Amendment and Termination of This Supplement.
                  --------------------------------------------

          (a)  Amendment Required for Qualification. All provisions of this
               ------------------------------------
Supplement, and all benefits and rights granted hereunder, are subject to any
amendments, modifications or alterations which are necessary from time to time
to qualify the Plan and Supplement under Section 401(a) or 501(a) of the Code or
under Section 1165(a) of the Puerto Rico Code, to continue the Plan as so
qualified, or to comply with any other provision of law. Accordingly,
notwithstanding Section 19(a) of the Plan or any other provision of this Plan,
the Company may amend, modify or alter the Plan, with or without retroactive
effect, in any respect or manner necessary to qualify the Plan and Supplement
under Section 401(a) of the Code or under Section 1165(a) of the Puerto Rico
Code.

          (b)   Reversion of Funds.
                ------------------

                (i)  All employer contributions are expressly conditioned on
their deductibility under Section 404 of the Code and Section 1023(n) of the
Puerto Rico Code. To the extent permissible under ERISA, any employer
contribution shall be returned to the appropriate Participating Company, upon
its written request, to the extent that the contribution is disallowed as a
deduction, within one year after such disallowance;

          (ii)  In the event that, due solely to the inclusion of this
Supplement D, the Commissioner of Internal Revenue determines that the Plan
would cease to be qualified under the Code or the Secretary of the Puerto Rico
Treasury determines that the Plan is not initially qualified under the Puerto
Rico Code, to the extent permissible under ERISA, any contributions made by or
on behalf of a Puerto Rico Participant must be returned to the

                                       36
<PAGE>

appropriate Puerto Rico Participant and to the appropriate Participating Company
within one year after the date of such determination. The return of
contributions to a Participating Company is further conditioned upon the
Company's having made the application for the qualification by the time
Prescribed by law for filing the Company's return for the taxable year in which
Supplement D is adopted, or such later dates as the Secretary of the Treasury or
the Secretary of the Puerto Rico Treasury may prescribe.

                                 *******************

          IN WITNESS WHEREOF, the undersigned has hereunder set his hand as of
this 1st day of January, 2001.

                              DEAN WITTER REYNOLDS INC.

                              By: /s/ Michael T. Cunningham
                                  -------------------------

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