WITTER DEAN S&P 500 INDEX FUND
485BPOS, 1998-03-31
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<PAGE>
    AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON MARCH 31, 1998

                                                  REGISTRATION NOS.: 333-29721
                                                                     811-08265

                      SECURITIES AND EXCHANGE COMMISSION

                            WASHINGTON, D.C. 20549

                                  FORM N-1A

                            REGISTRATION STATEMENT

                        UNDER THE SECURITIES ACT OF 1933                    [X] 

                           PRE-EFFECTIVE AMENDMENT NO.                      [ ] 

                         POST-EFFECTIVE AMENDMENT NO. 1                     [X] 

                                    AND/OR

               REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY

                                   ACT OF 1940                              [X] 

                                 AMENDMENT NO. 2                            [X] 

                         DEAN WITTER S&P 500 Index Fund

                        (A MASSACHUSETTS BUSINESS TRUST)

               (EXACT NAME OF REGISTRANT AS SPECIFIED IN CHARTER)

                             TWO WORLD TRADE CENTER
                            NEW YORK, NEW YORK 10048

                     (ADDRESS OF PRINCIPAL EXECUTIVE OFFICE)

       REGISTRANT'S TELEPHONE NUMBER, INCLUDING AREA CODE: (212) 392-1600

                                BARRY FINK, ESQ.
                             TWO WORLD TRADE CENTER
                            NEW YORK, NEW YORK 10048

                     (NAME AND ADDRESS OF AGENT FOR SERVICE)

                                    COPY TO:

                             DAVID M. BUTOWSKY, ESQ.
                             GORDON ALTMAN BUTOWSKY
                              WEITZEN SHALOV & WEIN
                              114 WEST 47TH STREET
                            NEW YORK, NEW YORK 10036

                  APPROXIMATE DATE OF PROPOSED PUBLIC OFFERING:

 As soon as practicable after this Post-Effective Amendment becomes effective.

IT IS PROPOSED THAT THIS FILING WILL BECOME EFFECTIVE (CHECK APPROPRIATE
BOX)
              X  immediately upon filing pursuant to paragraph (b) 
             ___ on (date) pursuant to paragraph (b) 
             ___ 60 days after filing pursuant to
             ___ paragraph (a) on (date) pursuant to paragraph (a) of rule 485.
                                                                     

            AMENDING THE PROSPECTUS AND UPDATING FINANCIAL STATEMENTS

<PAGE>
                        DEAN WITTER S&P 500 INDEX FUND
                            CROSS-REFERENCE SHEET
                                  FORM N-1A

<TABLE>
<CAPTION>
 ITEM         CAPTION
- ------------- -----------------------------------------------------
PART A        PROSPECTUS
- ------------- -----------------------------------------------------
<S>          <C>
1. ...........Cover Page
2. ...........Summary of Fund Expenses; Prospectus Summary
3. ...........Financial Highlights; Performance Information
4. ...........Investment Objective and Policies; Risk
               Considerations and Investment Practices; The Fund
               and Its Management; Cover Page; Investment
               Restrictions; Prospectus Summary
5. ...........the Fund and Its Management; Back Cover; Investment
              Objective and Policies
6. ...........Dividends, Distributions and Taxes; Additional
               Information
7. ...........Purchase of Fund Shares; Shareholder Services;
               Redemptions and Repurchases
8. ...........Purchase of Fund Shares; Redemptions and Repurchases;
               Shareholder Services
9. ...........Not Applicable
</TABLE>

<TABLE>
<CAPTION>
   PART B         STATEMENT OF ADDITIONAL INFORMATION
- ----------        ------------------------------------------------------
<S>          <C>
10. ..........Cover Page
11. ..........Table of Contents
12. ..........The Fund and Its Management
13. ..........Investment Practices and Policies; Investment
               Restrictions; Portfolio Transactions and Brokerage
14. ..........The Fund and Its Management; Trustees and Officers
15. ..........Trustees and Officers
16. ..........The Fund and Its Management; Purchase of Fund Shares;
               Custodian and Transfer Agent; Independent Accountants
17. ..........Portfolio Transactions and Brokerage
18. ..........Description of Shares
19. ..........The Distributor; Purchase of Fund Shares; Redemptions
               and Repurchases; Statement of Assets and Liabilities;
               Shareholder Services
20. ..........Dividends, Distributions and Taxes
21. ..........The Distributor
22. ..........Performance Information
23. ..........Experts; Financial Statements
</TABLE>

PART C

   Information required to be included in Part C is set forth under the
appropriate item, so numbered, in Part C of this Registration Statement.

<PAGE>
   
DEAN WITTER
S&P 500 INDEX FUND

PROSPECTUS -- MARCH 31, 1998
- -----------------------------------------------------------------------------

     Dean  Witter S&P 500 Index Fund (the  "Fund") is an  open-end,  diversified
management   investment  company  whose  investment   objective  is  to  provide
investment results that, before expenses,  correspond to the total return (i.e.,
the   combination   of  capital   changes   and   income)  of  the   Standard  &
Poor's(Registered  Trademark)  500  Composite  Stock  Price  Index (the "S&P 500
Index").  The Fund seeks to meet its  investment  objective by investing,  under
normal  circumstances,  at least 80% of the value of its total  assets in common
stocks included in the S&P 500 Index in approximately the same weightings as the
Index. (See "Investment Objective and Policies.")

     The Fund  offers four  classes of shares  (each,  a  "Class"),  each with a
different  combination of sales charges,  ongoing fees and other  features.  The
different  distribution  arrangements permit an investor to choose the method of
purchasing shares that the investor believes is most beneficial given the amount
of the purchase,  the length of time the investor expects to hold the shares and
other  relevant  circumstances.   (See  "Purchase  of  Fund  Shares--Alternative
Purchase Arrangements.")

This Prospectus sets forth concisely the information you should know before
investing in the Fund. It should be read and retained for future reference.
Additional information about the Fund is contained in the Statement of
Additional Information, dated March 31, 1998, which has been filed with the
Securities and Exchange Commission, and which is available at no charge upon
request of the Fund at the address or telephone numbers listed on this page. The
Statement of Additional Information is incorporated herein by reference.
    

          DEAN  WITTER 
          S&P 500 INDEX FUND 
          TWO WORLD TRADE CENTER 
          NEW YORK,  NEW YORK 10048 
          (212) 392-2550 OR 
          (800) 869-NEWS (TOLL-FREE) 

                               TABLE OF CONTENTS

Prospectus Summary ....................................................      2

Summary of Fund Expenses ..............................................      4

   
Financial Highlights ..................................................      6

The Fund and its Management ...........................................      7

Investment Objective and Policies .....................................      7

 Risk Considerations and
  Investment Practices ................................................      9

Investment Restrictions ...............................................     12

Purchase of Fund Shares ...............................................     12

Shareholder Services ..................................................     23

Redemptions and Repurchases ...........................................     25

Dividends, Distributions and Taxes ....................................     27

Performance Information ...............................................     27

Additional Information ................................................     28

Financial Statements (unaudited)--
 February 28, 1998 ....................................................     30
    

Shares of the Fund are not deposits or obligations of, or guaranteed or endorsed
by, any bank, and the shares are not federally insured by the Federal Deposit
Insurance Corporation, the Federal Reserve Board, or any other agency.

THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE SECURITIES
AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION PASSED UPON THE
ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A
CRIMINAL OFFENSE.

       Dean Witter Distributors Inc.
       Distributor

<PAGE>
PROSPECTUS SUMMARY
- --------------------------------------------------------------------------------

   
<TABLE>
<CAPTION>
<S>                    <C>
 -------------------   ------------------------------------------------------------------
The                    The Fund is organized as a trust, commonly known as a
 Fund                  Massachusetts business trust, and is an open-end, diversified
                       management investment company. The Fund invests primarily
                       in common stocks included in the Standard &
                       Poor's(Registered Trademark) 500 Composite Stock Price
                       Index (the "S&P 500 Index").
- -------------------    ------------------------------------------------------------------
Shares Offered Shares  Of beneficial interest with $0.01 par value (see page 28).
                       The Fund offers four Classes of shares, each with a different
                       combination of sales charges, ongoing fees and other
                       features (see pages 12-22).
- -------------------    ------------------------------------------------------------------
Minimum Purchase       The minimum initial investment for each Class is $1,000 ($100 if
                       the account is opened through EasyInvest (Service Mark) ). Class D
                       shares are only available to persons investing $5 million ($25
                       million for certain qualified plans) or more and to certain other
                       limited categories of investors. For the purpose of meeting the
                       minimum $5 million (or $25 million) investment for Class D shares,
                       and subject to the $1,000 minimum initial investment for each
                       Class of the Fund, an investor's existing holdings of Class A
                       shares and shares of funds for which Dean Witter InterCapital Inc.
                       serves as investment manager ("Dean Witter Funds") that are sold
                       with a front-end sales charge, and concurrent investments in Class
                       D shares of the Fund and other Dean Witter Funds that are multiple
                       class funds, will be aggregated. The minimum subsequent investment
                       is $100 (see page 12).
- -------------------    ------------------------------------------------------------------
Investment             The investment objective of the Fund is to provide investment
 Objective             results that, before expenses, correspond to the total return
                       (i.e., the combination of capital changes and income) of
                       the S&P 500 Index (see page 7).
- -------------------    ------------------------------------------------------------------
Investment             Manager Dean Witter InterCapital Inc., the Investment
                       Manager of the Fund, and its wholly-owned subsidiary, Dean
                       Witter Services Company Inc., serve in various investment
                       management, advisory, management and administrative
                       capacities to 101 investment companies and other portfolios
                       with net assets under management of approximately $110
                       billion at February 28, 1998 (see page 7).
- -------------------    ------------------------------------------------------------------
Management Fee         The Investment Manager receives a monthly fee at the annual rate
                       of 0.40% of the Fund's average daily net assets. The Investment
                       Manager has agreed to assume all expenses (except for brokerage
                       and 12b-1 fees) and to waive the compensation provided for in its
                       Management Agreement to the extent that such expenses and
                       compensation on an annualized basis exceed 0.50% of the
                       daily net assets of the Fund (see page 7).
- -------------------    ------------------------------------------------------------------
Distributor and        Dean Witter Distributors Inc. (the "Distributor"). The Fund has
 Distribution Fee      adopted a distribution plan pursuant to Rule 12b-1 under the
                       Investment Company Act (the "12b-1 Plan") with respect to the
                       distribution fees paid by the Class A, Class B and Class C shares
                       of the Fund to the Distributor. The entire 12b-1 fee payable by
                       Class A and a portion of the 12b-1 fee payable by each of Class B
                       and Class C equal to 0.25% of the average daily net assets of the
                       Class are currently each characterized as a service fee within the
                       meaning of the National Association of Securities Dealers, Inc.
                       guidelines. The remaining portion of the 12b-1 fee, if any, is
                       characterized as an asset-based sales charge (see pages 12 and
                       21).

<PAGE>

- -------------------    ------------------------------------------------------------------
Alternative            Four classes of shares are offered: o Class A shares are offered
 Purchase              with a front-end sales charge, starting at 5.25% and reduced for
 Arrangements          larger purchases. Investments of $1 million or more (and
                       investments by certain other limited categories of
                       investors) are not subject to any sales charge at the time
                       of purchase but a contingent deferred sales charge ("CDSC")
                       of 1.0% may be imposed on redemptions within one year of
                       purchase. The Fund is authorized to reimburse the
                       Distributor for specific expenses incurred in promoting the
                       distribution of the Fund's Class A shares and servicing
                       shareholder accounts pursuant to the Fund's 12b-1 Plan.
                       Reimbursement may in no event exceed an amount equal to
                       payments at an annual rate of 0.25% of average daily net
                       assets of the Class (see pages 12, 15 and 21). o Class B
                       shares are offered without a front-end sales charge, but
                       will in most cases be subject to a CDSC (scaled down from
                       5.0% to 1.0%) if redeemed within six years after purchase.
                       The CDSC will be imposed on any redemption of shares if
                       after such redemption the aggregate current value of a
                       Class B account with the Fund falls below the aggregate
                       amount of the investor's purchase payments made during the
                       six years preceding the redemption. A different CDSC
                       schedule applies to investments by certain qualified plans.
                       Class B shares are also subject to a 12b-1 fee assessed at
                       the annual rate of 1.0% of the average daily net assets of
                       Class B. Class B shares convert to Class A shares
                       approximately ten years after the date of the original
                       purchase (see pages 12, 18 and 21).
</TABLE>               
                       
                       
                                  2
<PAGE>                 
- -----------------------------------------------------------------------------

   
<TABLE>
<CAPTION>
<S>                  <C>
 ------------------- ------------------------------------------------------------------
                     o Class C shares are offered without a front-end sales charge, but
                     will in most cases be subject to a CDSC of 1.0% if redeemed within
                     one year after purchase. The Fund is authorized to reimburse the
                     Distributor for specific expenses incurred in promoting the
                     distribution of the Fund's Class C shares and servicing
                     shareholder accounts pursuant to the Fund's 12b-1 Plan.
                     Reimbursement may in no event exceed an amount equal to payments
                     at an annual rate of 1.0% of average daily net assets of the Class
                     (see pages 12, 20 and 21). 

                     o Class D shares are offered only to investors meeting an initial 
                     investment minimum of $5 million ($25 million for certain qualified 
                     plans) and to certain other limited categories of investors. 
                     Class D shares are offered without a front-end sales charge or 
                     CDSC and are not subject to any 12b-1 fee (see pages 12 and 20).
- -------------------  ------------------------------------------------------------------
Dividends            Dividends from net investment income and distributions from net
and                  capital gains, if any, are paid at least once each year. The Fund
Capital Gains        however, determine to retain all or part of any net long-term
Distributions        capital gains in any year for reinvestment. Dividends and
                     capital gains distributions paid on shares of a Class are automatically 
                     reinvested in additional shares of the same Class at net asset value 
                     unless the shareholder elects to receive cash. Shares acquired by 
                     dividend and distribution reinvestment will not be subject to any 
                     sales charge or CDSC (see pages 23 and 27).
- -------------------  ------------------------------------------------------------------
Redemption           Shares are redeemable by the shareholder at net asset value
                     less any applicable CDSC on Class A, Class B or Class C
                     shares. An account may be involuntarily redeemed if the
                     total value of the account is less than $100 or, if the
                     account was opened through EasyInvest (Service Mark), if
                     after twelve months the shareholder has invested less than
                     $1,000 in the account (see page 25).
- -------------------  ------------------------------------------------------------------
Risk Considerations  An investment in the Fund should be considered a long-term holding
                     and subject to all the risks associated with investing in equity
                     securities. The market value of the Fund's portfolio securities
                     and, therefore, the Fund's net asset value per share, will
                     increase or decrease due to a variety of economic, market or
                     political factors which cannot be predicted. The Fund operates as
                     a "straight" index fund and will therefore not be actively
                     managed; as such, the adverse performance of a portfolio security
                     will ordinarily not result in the elimination of the security from
                     the Fund's portfolio. The Fund may enter into repurchase
                     agreements, may lend its portfolio securities and may utilize
                     transactions involving stock index futures which may be considered
                     speculative in nature and may involve greater risks than those
                     customarily assumed by other investment companies which do not
                     invest in such instruments. An investment in shares of the Fund
                     should not be considered a complete investment program and is not
                     appropriate for all investors. Investors should carefully consider
                     their ability to assume these risks and the risks outlined under
                     the heading "Risk Considerations and Investment Practices" (page
                     9) before making an investment in the Fund.
</TABLE>
    

   
 The above is qualified in its entirety by the detailed information appearing
  elsewhere in this Prospectus and in the Statement of Additional Information.
    

                                3
<PAGE>
SUMMARY OF FUND EXPENSES
- -----------------------------------------------------------------------------

   
The following table illustrates all expenses and fees that a shareholder of the
Fund will incur. The estimated annualized fees and expenses set forth in the
table below are based on the expenses and fees for the fiscal period ending
August 31, 1998.     

   
<TABLE>
<CAPTION>
                                                        CLASS A      CLASS B       CLASS C      CLASS D
                                                     ------------ ------------  ------------ -----------
<S>                                                  <C>          <C>           <C>          <C>
Shareholder Transaction Expenses
- ---------------------------------------------------
Maximum Sales Charge Imposed on Purchases (as a
 percentage of offering price) .....................     5.25%(1)      None         None         None
Sales Charge Imposed on Dividend Reinvestments  ....     None          None         None         None
Maximum Contingent Deferred Sales Charge
 (as a percentage of original purchase price or
 redemption proceeds)...............................     None(2)       5.00%(3)     1.00%(4)     None
Redemption Fees.....................................     None          None         None         None
Exchange Fee........................................     None          None         None         None
Annual Fund Operating Expenses (as a percentage of average net assets)
- ---------------------------------------------                                                  
Management Fees+ ...................................     0.23%         0.23%        0.23%        0.23%
12b-1 Fees (5)(6)...................................     0.24%         1.00%        1.00%        None
Other Expenses+ ....................................     0.27%         0.27%        0.27%        0.27%
Total Fund Operating Expenses+......................     0.74%         1.50%        1.50%        0.50%
</TABLE>
    

   
- ------------
+      The Investment Manager has agreed to assume all expenses (except for
       brokerage and 12b-1 fees) and to waive the compensation provided for in
       its Management Agreement to the extent that such expenses and
       compensation on an annualized basis exceed 0.50% of the daily net
       assets of the Fund. The fees and expenses disclosed above reflect the
       assumption of such expenses and waiver of compensation by the
       Investment Manager to the extent that such expenses and compensation on
       an annualized basis exceed 0.50% of the daily net assets of the Fund.

(1)    Reduced for purchases of $25,000 and over (see "Purchase of Fund
       Shares--Initial Sales Charge Alternative--Class A Shares").

(2)    Investments that are not subject to any sales charge at the time of
       purchase are subject to a CDSC of 1.00% that will be imposed on
       redemptions made within one year after purchase, except for certain
       specific circumstances (see "Purchase of Fund Shares--Initial Sales
       Charge Alternative--Class A Shares").

(3)    The CDSC is scaled down to 1.00% during the sixth year, reaching zero
       thereafter.

(4)    Only applicable to redemptions made within one year after purchase (see
       "Purchase of Fund Shares--Level Load Alternative--Class C Shares").

(5)    The 12b-1 fee is accrued daily and payable monthly. The entire 12b-1
       fee payable by Class A and a portion of the 12b-1 fee payable by each
       of Class B and Class C equal to 0.25% of the average daily net assets
       of the Class are currently each characterized as a service fee within
       the meaning of National Association of Securities Dealers, Inc.
       ("NASD") guidelines and are payments made for personal service and/or
       maintenance of shareholder accounts. The remainder of the 12b-1 fee, if
       any, is an asset-based sales charge, and is a distribution fee paid to
       the Distributor to compensate it for the services provided and the
       expenses borne by the Distributor and others in the distribution of the
       Fund's shares (see "Purchase of Fund Shares--Plan of Distribution").

(6)    Upon conversion of Class B shares to Class A shares, such shares will be
       subject to the lower 12b-1 fee applicable to Class A shares. No sales
       charge is imposed at the time of conversion of Class B shares to Class A
       shares. Class C shares do not have a conversion feature and, therefore,
       are subject to an ongoing 1.00% distribution fee (see "Purchase of Fund
       Shares--Alternative Purchase Arrangements").
    

                                4
<PAGE>
   
<TABLE>
<CAPTION>
EXAMPLES                                                                        1 YEAR    3 YEARS
- -----------------------------------------------------------------------------  -------- ---------
<S>                                                                            <C>      <C>
You would pay the following expenses on a $1,000 investment assuming (1) a 5%
annual return and (2) redemption at the end of each time period:
  Class A ....................................................................    $60       $75
  Class B ....................................................................    $65       $77
  Class C.....................................................................    $25       $47
  Class D ....................................................................    $ 5       $16

You would pay the following expenses on the same $1,000 investment assuming no
redemption at the end of the period:
  Class A ....................................................................    $60       $75
  Class B ....................................................................    $15       $47
  Class C ....................................................................    $15       $47
  Class D ....................................................................    $ 5       $16
</TABLE>
    

   THE ABOVE EXAMPLES SHOULD NOT BE CONSIDERED A REPRESENTATION OF FUTURE
EXPENSES OR PERFORMANCE. ACTUAL EXPENSES OF EACH CLASS MAY BE GREATER OR LESS
THAN THOSE SHOWN.

   The purpose of this table is to assist the investor in understanding the
various costs and expenses that an investor in the Fund will bear directly or
indirectly. For a more complete description of these costs and expenses, see
"The Fund and its Management," "Purchase of Fund Shares--Plan of Distribution"
and "Redemptions and Repurchases."

   Long-term shareholders of Class B and Class C may pay more in sales charges,
including distribution fees, than the economic equivalent of the maximum
front-end sales charges permitted by the NASD.

                                5
<PAGE>
   
FINANCIAL HIGHLIGHTS (unaudited)

The following ratios and per share data for a share of beneficial interest
outstanding throughout the period have been taken from the records of the Fund
without examination by the independent accountants. The financial highlights
should be read in conjunction with the unaudited financial statements and the
notes thereto which are contained in this Prospectus commencing on page 30. 

<TABLE>
<CAPTION>
                                        For the Period September 26, 1997* Through February 28, 1998++ 
                                        Class A      Class B           Class C            Class D 
                                        Shares       Shares           Shares              Shares 
                                        ------       ------           ------              ------ 
<S>                                     <C>          <C>               <C>                <C>    
PER SHARE OPERATING PERFORMANCE: 
Net asset value, beginning of period    $10.00       $10.00            $10.00             $10.00 
                                        ------       ------            ------             ------
Net investment income                     0.05         0.02              0.02               0.06 
Net realized and unrealized gain          1.10         1.09              1.09               1.09
                                        ------       ------            ------             ------
Total from investment operations          1.15         1.11              1.11               1.15 
                                        ------       ------            ------             ------
Less dividends from net 
  investment income                      (0.03)       (0.01)            (0.01)             (0.03) 
                                        ------       ------            ------             ------
Net asset value, end of period          $11.12        $11.10           $11.10             $11.12 
                                        ======        ======           ======             ====== 
TOTAL INVESTMENT RETURN+(1)              11.47%        11.09%           11.08%             11.53% 

RATIOS TO AVERAGE NET ASSETS(2)(3): 
Expenses                                  0.74%        1.50%             1.50%              0.50% 
Net investment income                     1.10%        0.36%             0.37%              1.29% 

SUPPLEMENTAL DATA: 
Net assets, end of period, 
 in thousands                          $19,089     $380,009           $24,126            $12,705
Portfolio turnover rate(1)                   1%           1%                1%                 1%
Average commission rate paid           $0.0157      $0.0157           $0.0157            $0.0157
</TABLE>

- ------------
 *      Commencement of operations.

 ++     The per share amounts were computed using an average number of shares
        outstanding during the period.

 +      Does not reflect the deduction of sales charge. Calculated based on
        the net asset value as of the last business day of the period.

(1)     Not annualized.

(2)     Annualized.

(3)     If the Fund had borne all of its expenses that were reimbursed or waived
        by the Investment Manager, the annualized expense and net investment
        income ratios would have been 0.91% and 0.93%, respectively, for Class A
        shares, 1.67% and 0.19%, respectively, for Class B shares, 1.67% and
        0.20%, respectively, for Class C shares and 0.67% and 1.12%,
        respectively, for Class D shares.

                         See Notes to Financial Statements.
    

                                        6
<PAGE>
THE FUND AND ITS MANAGEMENT
- -----------------------------------------------------------------------------

   Dean Witter S&P 500 Index Fund (the "Fund") is an open-end, diversified
management investment company. The Fund is a trust of the type commonly known as
a "Massachusetts business trust" and was organized under the laws of The
Commonwealth of Massachusetts on June 18, 1997.

   
   Dean Witter InterCapital Inc. ("InterCapital" or the "Investment Manager"),
whose address is Two World Trade Center, New York, New York 10048, is the Fund's
Investment Manager. The Investment Manager, which was incorporated in July,
1992, is a wholly-owned subsidiary of Morgan Stanley Dean Witter & Co., a
preeminent global financial services firm that maintains leading market
positions in each of its three primary businesses--securities, asset management
and credit services.

   InterCapital and its wholly-owned subsidiary, Dean Witter Services Company
Inc., serve in various investment management, advisory, management and
administrative capacities to 101 investment companies, 28 of which are listed on
the New York Stock Exchange, with combined assets of approximately $106 billion
at February 28, 1998. The Investment Manager also manages portfolios of pension
plans, other institutions and individuals which aggregated approximately $4.1
billion at such date. 
    

   The Fund has retained the Investment Manager to provide administrative
services, manage its business affairs and manage the investment of the Fund's
assets, including the placing of orders for the purchase and sale of portfolio
securities. InterCapital has retained Dean Witter Services Company Inc. to
perform the aforementioned administrative services for the Fund.

   The Fund's Trustees review the various services provided by the Investment
Manager to ensure that the Fund's general investment policies and programs are
being properly carried out and that administrative services are being provided
to the Fund in a satisfactory manner.

   
   As full compensation for the services and facilities furnished to the Fund
and for expenses of the Fund incurred by the Investment Manager, the Fund pays
the Investment Manager monthly compensation calculated daily by applying the
annual rate of 0.40% to the Fund's net assets. The Investment Manager has agreed
to assume all expenses (except for brokerage and 12b-1 fees) and to waive the
compensation provided for in its Management Agreement to the extent that such
expenses and compensation on an annualized basis exceed 0.50% of the daily net
assets of the Fund.

    The Fund's expenses include: the fee of the Investment Manager; the fee 
pursuant to the Plan of Distribution (see "Purchase of Fund Shares"); taxes; 
transfer agent, custodian, auditing fees; certain legal fees, and printing and 
other expenses relating to the Fund's operations which are not expressly 
assumed by the Investment Manager under its Investment Management Agreement 
with the Fund. 
    

INVESTMENT OBJECTIVE AND POLICIES
- -----------------------------------------------------------------------------

   The investment objective of the Fund is to provide investment results that,
before expenses, correspond to the total return (i.e., the combination of
capital changes and income) of the Standard & Poor's(Registered Trademark) 500
Composite Stock Price Index (the "S&P 500 Index"). The objective is a
fundamental policy of the Fund and may not be changed without a vote of a
majority of the outstanding voting securities of the

                                        7

<PAGE>

Fund. There is no assurance that the objective will be achieved. The
following policies may be changed by the Board of Trustees without
shareholder approval.

   The Fund seeks to achieve its objective by investing, under normal
circumstances, at least 80% of its total assets in common stocks included in the
S&P 500 Index in approximately the same weightings as the Index. The Fund
intends to invest in substantially all of the stocks that comprise the S&P 500
Index in approximately the same weightings as they are represented in the Index.
The Fund operates as a "straight" index fund and will not be actively managed;
as such, adverse performance of a security will ordinarily not result in the
elimination of the security from the Fund's portfolio. The Fund will remain
invested in common stocks even when stock prices are generally falling.
Ordinarily, portfolio securities will not be sold except to reflect additions or
deletions of the stocks that comprise the S&P 500 Index, including mergers,
reorganizations and similar transactions, or as may be necessary to satisfy
redemption requests.

   Over the long term, the Investment Manager seeks a correlation between the
performance of the Fund, before expenses, and that of the S&P 500 Index of 0.95
or better. A figure of 1.00 would indicate perfect correlation. The Fund's
ability to correlate its performance, before expenses, with the S&P 500 Index
may be affected by, among other things, changes in securities markets, the
manner in which the S&P 500 Index is calculated and the timing of purchases and
redemptions. The Fund's ability to correlate its performance to the Index also
depends to some extent on the size of the Fund's portfolio and the size of cash
flows into and out of the Fund. To accomodate these cash flows, investment
changes may be made to maintain the similarity of the Fund's portfolio to the
S&P 500 Index to the maximum practicable extent. The Investment Manager
regularly monitors the correlation and, in the event the desired correlation is
not achieved, the Investment Manager will determine what additional investment
changes may need to be made.

   Stock Index Futures Contracts. The Fund may purchase and sell stock index
futures contracts ("futures contracts") that are traded on U.S. commodity
exchanges on the S&P 500 Index ("stock index" futures). As a futures contract
purchaser, the Fund incurs an obligation to take delivery of a specified amount
of the obligation underlying the contract at a specified time in the future for
a specified price. As a seller of a futures contract, the Fund incurs an
obligation to deliver the specified amount of the underlying obligation at a
specified time in return for an agreed upon price. The Fund will purchase or
sell stock index futures contracts for the following reasons: to simulate full
investment in the S&P 500 Index while retaining a cash balance for fund
management purposes, to facilitate trading, to reduce transaction costs or to
seek higher investment returns when a futures contract is priced more
attractively than stocks comprising the S&P 500 Index. The Fund may enter into
such instruments provided that not more than 5% of its assets are required as an
initial margin deposit and provided that the contract prices of the stock index
futures contracts do not exceed 20% of its total assets. While such instruments
can be used as leveraged investments, the Fund may not use them to leverage its
assets.

   Additional Information Concerning the S&P 500 Index. The S&P 500 Index is a
well-known stock market index that includes common stocks of 500 companies from
several industrial sectors representing a significant portion of the market
value of all common stocks publicly traded in the United States, most of which
are listed on the New York Stock Exchange Inc. (the "NYSE"). Stocks in the S&P
500 Index are weighted according to their market capitalization (i.e., the
number of shares outstanding multiplied by the stock's current price). The
Investment Manager believes that the performance of the S&P 500 Index is
representative of the performance of publicly traded common stocks in general.
The composition of the S&P 500 Index is determined by S&P and is based on such
factors as the market capitalization and trading activity of each stock and its
adequacy as a representation of stocks in a particular industry group, and may
be changed from time to time.

                                        8

<PAGE>

   "Standard & Poor's(Registered Trademark)," "S&P(Registered Trademark)," "S&P
500(Registered Trademark)," "Standard & Poor's 500," and "500" are trademarks of
The McGraw-Hill Companies, Inc. and have been licensed for use by the Fund. The
Fund is not sponsored, endorsed, sold or promoted by Standard & Poor's, a
division of The McGraw Hill Companies, Inc. ("Standard & Poor's") and Standard &
Poor's makes no representation regarding the advisability of investing in the
Fund.

   
   The Fund may also invest in repurchase agreements and zero coupon securities
and may lend its portfolio securities, as discussed under "Risk Considerations
and Investment Practices" below. 
    

   The Fund reserves the right to seek to achieve its investment objective by
converting to a "master/ feeder" fund structure (see "Additional Information").

RISK CONSIDERATIONS AND INVESTMENT PRACTICES

   The net asset value of the Fund's shares will fluctuate with changes in the
market value of the Fund's portfolio securities. The market value of the Fund's
portfolio securities will increase or decrease due to a variety of economic,
market or political factors which cannot be predicted.

   Risks of Futures Transactions. The Fund may close out its position as a buyer
or seller of a futures contract only if a liquid secondary market exists for
futures contracts of that series. There is no assurance that such a market will
exist. Also, exchanges may limit the amount by which the price of many futures
contracts may move on any day. If the price moves equal the daily limit on
successive days, then it may prove impossible to liquidate a futures position
until the daily limit moves have ceased.

   The extent to which the Fund may enter into transactions involving futures
contracts may be limited by the Internal Revenue Code's requirements for
qualification as a regulated investment company and the Fund's intention to
qualify as such. See "Dividends, Distributions and Taxes."

   There may exist an imperfect correlation between the price movements of
futures contracts purchased by the Fund and the movements in the prices of the
securities which are the subject of the contract. If participants in the futures
market elect to close out their contracts through offsetting transactions rather
than meet margin deposit requirements, distortions in the normal relationship
between the securities and futures markets could result.

   Cash Flows; Expenses. The ability of the Fund to meet its investment
objective depends to some extent on the Investment Manager's ability to manage
cash flows (primarily from purchases and redemptions and distributions from the
Fund's portfolio investments). Generally, the Investment Manager will employ
stock index futures to provide liquidity necessary to meet anticipated
redemptions or for day-to-day operating purposes. In addition, if considered
appropriate in the opinion of the Investment Manager, a portion of a Fund's
assets not exceeding 20% of its total assets may be invested in money market
instruments. The Investment Manager will also make investment changes to the
Fund's portfolio to accommodate cash flows while continuing to seek to replicate
the total return of the S&P 500 Index. Investors should also be aware that the
investment performance of the S&P 500 Index is a hypothetical number which does
not take into account brokerage commissions and other transaction costs, custody
and other costs of investing, which will be borne by the Fund, and any
incremental operating costs (e.g., transfer agency, accounting) borne by the
Fund. Finally, since the Fund seeks to provide investment results that, before
expenses, correspond to the total return of the S&P 500 Index. S&P 500 Index,
the Investment Manager will generally not attempt to judge the merits of any
particular security as an investment.

   Temporary Investments. A portion of the Fund's assets, not exceeding 20% of
its total assets, may be invested temporarily in money market instruments under
any one or more of the following circumstances: (a) pending investment of
proceeds of sale of shares of the Fund; (b) pending settlement of purchases of
portfolio securities; or (c) to maintain liquidity for the purposes of meeting
anticipated redemptions. The money market instruments in which the Fund may
invest are certificates of deposit

                                        9
<PAGE>

of U.S. domestic banks with assets of $1 billion or more; bankers' acceptances;
time deposits; U.S. Government and U.S. Government agency securities; or
commercial paper rated within the two highest grades by S&P or Moody's Investors
Service, Inc., or, if not rated, are of comparable quality as determined by the
Trustees, and which mature within one year from the date of purchase.

   Foreign Securities. The Fund may purchase common stocks, including American
Depository Receipts, of foreign corporations represented in the S&P 500 Index
(such securities are listed on the New York Stock Exchange, the American Stock
Exchange or the NASDAQ Market System). Investments in foreign securities may be
affected by changes in governmental administration or economic policy (in the
United States and abroad) or changed circumstances in dealings between nations.
Foreign companies may be subject to less governmental regulation than U.S.
companies. Securities of foreign companies may be more volatile than securities
of U.S. companies. As noted above, the Fund's investment in common stock of
foreign corporations represented in the S&P 500 Index may also be in the form of
American Depository Receipts (ADRs). ADRs are receipts typically issued by a
United States bank or trust company evidencing ownership of the underlying
securities and are designed for use in the U.S. securities markets.

   
   Standard & Poor's Depositary Receipts ("SPDRs"). The Fund may purchase
interests in a unit investment trust holding a portfolio of securities linked to
the S&P 500 Index. SPDRs closely track the underlying portfolio of securities,
trade like a share of common stock and pay periodic dividends proportionate to
those paid by the portfolio of stocks that comprise the S&P 500 Index. The Fund
will not invest in excess of 10% of its total assets in SPDRs. As a holder of
interests in a unit investment trust, the Fund would indirectly bear its 
ratable share of that unit investment trust's expenses. At the same time the 
Fund would continue to pay its own management and advisory fees and other 
expenses, as a result of which the Fund and its shareholders in effect will 
be absorbing duplicate levels of fees with respect to investments in such 
unit investment trusts. See the Statement of Additional Information for a 
further discussion of SPDRs. 
    

   Repurchase Agreements. The Fund may enter into repurchase agreements, which
may be viewed as a type of secured lending by the Fund, and which typically
involve the acquisition by the Fund of debt securities from a selling financial
institution such as a bank, savings and loan association or broker-dealer. The
agreement provides that the Fund will sell back to the institution, and that the
institution will repurchase, the underlying security at a specified price and at
a fixed time in the future, usually not more than seven days from the date of
purchase. While repurchase agreements involve certain risks not associated with
direct investments in debt securities, including the risks of default or
bankruptcy of the selling financial institution, the Fund follows procedures
designed to minimize such risks. These procedures include effecting repurchase
transactions only with large, well-capitalized and well-established financial
institutions and maintaining adequate collateralization.

   Zero Coupon Securities. A portion of the money market instruments in which
the Fund may invest may be zero coupon securities. Such securities are purchased
at a discount from their face amount, giving the purchaser the right to receive
their full value at maturity. The interest earned on such securities is,
implicitly, automatically compounded and paid out at maturity. While such
compounding at a constant rate eliminates the risk of receiving lower yields
upon reinvestment of interest if prevailing interest rates decline, the owner of
a zero coupon security will be unable to participate in higher yields upon
reinvestment of interest received on interest-paying securities if prevailing
interest rates rise.

   A zero coupon security pays no interest to its holder during its life.
Therefore, to the extent the Fund invests in zero coupon securities, it will not
receive current cash available for distribution to shareholders. In addition,
zero coupon securities are subject to substantially greater price fluctuations

                               10
<PAGE>
during periods of changing prevailing interest rates than are comparable
securities which pay interest on a current basis. Current federal tax law
requires that a holder (such as the Fund) of a zero coupon security accrue a
portion of the discount at which the security was purchased as income each year
even though the Fund receives no interest payments in cash on the security
during the year.

   Lending of Portfolio Securities. Consistent with applicable regulatory
requirements, the Fund may lend its portfolio securities to brokers, dealers and
other financial institutions, provided that such loans are callable at any time
by the Fund (subject to certain notice provisions described in the Statement of
Additional Information), and are at all times secured by cash or money market
instruments, which are maintained in a segregated account pursuant to applicable
regulations and that are equal to at least the market value, determined daily,
of the loaned securities. As with any extensions of credit, there are risks of
delay in recovery and in some cases even loss of rights in the collateral should
the borrower of the securities fail financially. However, loans of portfolio
securities will only be made to firms deemed by the Investment Manager to be
creditworthy and when the income which can be earned from such loans justifies
the attendant risks.

   For additional risk disclosure, please refer to the "Investment Objective and
Policies" section of the Prospectus and to the "Investment Practices and
Policies" section of the Statement of Additional Information.

   Except as specifically noted, all investment policies and practices discussed
above are not fundamental policies of the Fund and, as such, may be changed
without shareholder approval.

   
   Year 2000. The investment management services provided to the Fund by the
Investment Manager and the services provided to shareholders by the Distributor
and the Transfer Agent depend on the smooth functioning of their computer
systems. Many computer software systems in use today cannot recognize the year
2000, but revert to 1900 or some other date, due to the manner in which dates
were encoded and calculated. That failure could have a negative impact on the
handling of securities trades, pricing and account services. The Investment
Manager, the Distributor and the Transfer Agent have been actively working on
necessary changes to their own computer systems to prepare for the year 2000 and
expect that their systems will be adapted before that date, but there can be no
assurance that they will be successful, or that interaction with other
non-complying computer systems will not impair their services at that time.

   In addition, it is possible that the markets for securities in which the Fund
invests may be detrimentally affected by computer failures throughout the
financial services industry beginning January 1, 2000. Improperly functioning
trading systems may result in settlement problems and liquidity issues. In
addition, corporate and governmental data processing errors may result in
production problems for individual companies and overall economic uncertainties.
Earnings of individual issuers will be affected by remediation costs, which may
be substantial and may be reported inconsistently in U.S. and foreign financial
statements. Accordingly, the Fund's investments may be adversely affected. 
    

PORTFOLIO MANAGEMENT

   
   The Fund's portfolio is managed by its Investment Manager with a view to
achieving the Fund's investment objective. The assets of the Fund are managed
within InterCapital's Growth Group, which manages 26 equity funds and fund
portfolios with approximately $9 billion in assets as of February 28, 1998.
Kenton J. Hinchliffe, Senior Vice President of InterCapital and a member of
InterCapital's Growth Group, is the primary portfolio manager of the Fund. Mr.
Hinchliffe has been a portfolio manager at InterCapital for over 5 years.

   Orders for transactions in portfolio securities and commodities are placed
for the Fund with a number of brokers and dealers, including Dean Witter
Reynolds Inc. ("DWR"), Morgan Stanley & Co. Incorporated and other brokers and
dealers that are affiliates of the Investment Manager. The Fund may incur
brokerage commissions on transactions conducted through such affiliates.
Pursuant to an

    

                               11
<PAGE>
   
order of the Securities and Exchange Commission, the Fund may effect principal
transactions in certain money market instruments with DWR. It is not anticipated
that the portfolio trading will result in the Fund's portfolio turnover rate
exceeding 100% in any one year. Ordinarily, securities will be sold from the
portfolio only to reflect certain administrative changes in the S&P 500 Index or
to accommodate cash flows into or out of the Fund while maintaining the
similarity of the Fund to the S&P 500 Index. The Fund will incur brokerage costs
commensurate with its portfolio turnover rate. See "Dividends, Distributions and
Taxes" for a discussion of the tax implications of the Fund's trading policy.
    

INVESTMENT RESTRICTIONS
- -----------------------------------------------------------------------------

   The investment restrictions listed below are among the restrictions which
have been adopted by the Fund as fundamental policies. Under the Act, a
fundamental policy may not be changed without the vote of a majority of the
outstanding voting securities of the Fund, as defined in the Act. For purposes
of the following limitations: (i) all percentage limitations apply immediately
after a purchase or initial investment; and (ii) any subsequent change in any
applicable percentage resulting from market fluctuations or other changes in
total or net assets does not require elimination of any security from the
portfolio.

   The Fund may not:

     1. As to 75% of its total assets, invest more than 5% of the value of its
    total assets in the securities of any one issuer (other than obligations
    issued, or guaranteed by, the United States Government, its agencies or
    instrumentalities), except that the Fund may invest all or substantially all
    of its assets in another registered investment company having the same
    investment objective and policies and substantially the same investment
    restrictions as the Fund (a "Qualifying Portfolio").

     2. As to 75% of its total assets, purchase more than 10% of all outstanding
    voting securities or any class of securities of any one issuer, except that
    the Fund may invest all or substantially all of its assets in a Qualifying
    Portfolio.

   
     3. Invest 25% or more of the value of its total assets in securities of
    issuers in any one industry. This restriction does not apply to obligations
    issued or guaranteed by the United States Government or its agencies or
    instrumentalities.

PURCHASE OF FUND SHARES
- -----------------------------------------------------------------------------
    

GENERAL

   Dean Witter Distributors Inc. (the "Distributor") will act as the Distributor
of each Class of the Fund's shares during the continuous offering. Pursuant to a
Distribution Agreement between the Fund and the Distributor, an affiliate of the
Investment Manager, shares of the Fund are distributed by the Distributor and
offered by DWR and other dealers which have entered into selected dealer
agreements with the Distributor ("Selected Broker-Dealers"). The principal
executive office of the Distributor is located at Two World Trade Center, New
York, New York 10048.

   
   The Fund offers four classes of shares (each, a "Class"). Class A shares are
sold to investors with an initial sales charge that declines to zero for larger
purchases; however, Class A shares sold without an initial sales charge are
subject to a contingent deferred sales charge ("CDSC") of 1.0% if redeemed
within one year of purchase, except for certain specific circumstances. Class B
shares are sold without an initial sales charge but are subject to a CDSC
(scaled down from 5.0% to 1.0%) payable upon most redemptions within six years
after purchase. (Class B shares purchased by certain qualified plans are subject
to a CDSC scaled down from 2.0% to 1.0% if redeemed within three years after
purchase.) Class C shares are sold without an initial sales charge but are
subject to a CDSC of 1.0% on most redemptions made within one year after pur-
    

                                       12
<PAGE>
   
chase. Class D shares are sold without an initial sales charge or CDSC and are
available only to investors meeting an initial investment minimum of $5 million
($25 million for certain qualified plans), and to certain other limited
categories of investors. At the discretion of the Board of Trustees of the Fund,
Class A shares may be sold to categories of investors in addition to those set
forth in this prospectus at net asset value without a front-end sales charge,
and Class D shares may be sold to certain other categories of investors, in each
case as may be described in the then current prospectus of the Fund. See
"Alternative Purchase Arrangements--Selecting a Particular Class" for a
discussion of factors to consider in selecting which Class of shares to
purchase.

   The minimum initial purchase is $1,000 for each Class of shares, although
Class D shares are only available to persons investing $5 million ($25 million
for certain qualified plans) or more and to certain other limited categories of
investors. For the purpose of meeting the minimum $5 million (or $25 million)
initial investment for Class D shares, and subject to the $1,000 minimum initial
investment for each Class of the Fund, an investor's existing holdings of Class
A shares of the Fund and other Dean Witter Funds that are multiple class funds
("Dean Witter Multi-Class Funds") and shares of Dean Witter Funds sold with a
front-end sales charge ("FSC Funds") and concurrent investments in Class D
shares of the Fund and other Dean Witter Multi-Class Funds will be aggregated.
Subsequent purchases of $100 or more may be made by sending a check, payable to
Dean Witter S&P 500 Index Fund, directly to Morgan Stanley Dean Witter Trust FSB
(the "Transfer Agent" or "MSDW Trust") at P.O. Box 1040, Jersey City, NJ 07303
or by contacting an account executive of DWR or other Selected Broker-Dealer.
When purchasing shares of the Fund, investors must specify whether the purchase
is for Class A, Class B, Class C or Class D shares. If no Class is specified,
the Transfer Agent will not process the transaction until the proper Class is
identified. The minimum initial purchase in the case of investments through
EasyInvest (Service Mark), an automatic purchase plan (see "Shareholder
Services"), is $100, provided that the schedule of automatic investments will
result in investments totalling at least $1,000 within the first twelve months.
The minimum initial purchase in the case of an "Education IRA" is $500, if the
Distributor has reason to believe that additional investments will increase the
investment in the account to $1,000 within three years. In the case of
investments pursuant to (i) Systematic Payroll Deduction Plans (including
Individual Retirement Plans), (ii) the InterCapital mutual fund asset allocation
program and (iii) fee-based programs approved by the Distributor, pursuant to
which participants pay an asset based fee for services in the nature of
investment advisory, administrative and/or brokerage services, the Fund, in its
discretion, may accept investments without regard to any minimum amounts which
would otherwise be required, provided, in the case of Systematic Payroll
Deduction Plans, that the Distributor has reason to believe that additional
investments will increase the investment in all accounts under such Plans to at
least $1,000. Certificates for shares purchased will not be issued unless a
request is made by the shareholder in writing to the Transfer Agent. 
    

   Shares of the Fund are sold through the Distributor on a normal three
business day settlement basis; that is, payment is due on the third business day
(settlement date) after the order is placed with the Distributor. Since DWR and
other Selected Broker-Dealers forward investors' funds on settlement date, they
will benefit from the temporary use of the funds if payment is made prior
thereto. As noted above, orders placed directly with the Transfer Agent must be
accompanied by payment. Investors will be entitled to receive income dividends
and capital gains distributions if their order is received by the close of
business on the day prior to the record date for such dividends and
distributions. Sales personnel of a Selected Broker-Dealer are compensated for
selling shares of the Fund by the Distributor and/or the Selected Broker-Dealer.
In addition, some sales personnel of the Selected Broker-Dealer will receive
various types of non-cash compensation as special sales incentives, including

                                       13
<PAGE>
trips, educational and/or business seminars and merchandise. The Fund and the
Distributor reserve the right to reject any purchase orders.

ALTERNATIVE PURCHASE ARRANGEMENTS

   The Fund offers several Classes of shares to investors designed to provide
them with the flexibility of selecting an investment best suited to their needs.
The general public is offered three Classes of shares: Class A shares, Class B
shares and Class C shares, which differ principally in terms of sales charges
and rate of expenses to which they are subject. A fourth Class of shares, Class
D shares, is offered only to limited categories of investors (see "No Load
Alternative--Class D Shares" below).

   Each Class A, Class B, Class C or Class D share of the Fund represents an
identical interest in the investment portfolio of the Fund except that Class A,
Class B and Class C shares bear the expenses of the ongoing shareholder service
fees, Class B and Class C shares bear the expenses of the ongoing distribution
fees and Class A, Class B and Class C shares which are redeemed subject to a
CDSC bear the expense of the additional incremental distribution costs resulting
from the CDSC applicable to shares of those Classes. The ongoing distribution
fees that are imposed on Class A, Class B and Class C shares will be imposed
directly against those Classes and not against all assets of the Fund and,
accordingly, such charges against one Class will not affect the net asset value
of any other Class or have any impact on investors choosing another sales charge
option. See "Plan of Distribution" and "Redemptions and Repurchases."

   Set forth below is a summary of the differences between the Classes and the
factors an investor should consider when selecting a particular Class. This
summary is qualified in its entirety by detailed discussion of each Class that
follows this summary.

   Class A Shares. Class A shares are sold at net asset value plus an initial
sales charge of up to 5.25%. The initial sales charge is reduced for certain
purchases. Investments of $1 million or more (and investments by certain other
limited categories of investors) are not subject to any sales charges at the
time of purchase but are subject to a CDSC of 1.0% on redemptions made within
one year after purchase, except for certain specific circumstances. Class A
shares are also subject to a 12b-1 fee of up to 0.25% of the average daily net
assets of the Class. See "Initial Sales Charge Alternative--Class A Shares."

   
   Class B Shares. Class B shares are offered at net asset value with no initial
sales charge but are subject to a CDSC (scaled down from 5.0% to 1.0%) if
redeemed within six years of purchase. (Class B shares purchased by certain
qualified plans are subject to a CDSC scaled down from 2.0% to 1.0% if redeemed
within three years after purchase.) This CDSC may be waived for certain
redemptions. Class B shares are also subject to an annual 12b-1 fee of 1.0% of
the average daily net assets of Class B. The Class B shares' distribution fee
will cause that Class to have higher expenses and pay lower dividends than Class
A or Class D shares. 
    

   After approximately ten (10) years, Class B shares will convert automatically
to Class A shares of the Fund, based on the relative net asset values of the
shares of the two Classes on the conversion date. In addition, a certain portion
of Class B shares that have been acquired through the reinvestment of dividends
and distributions will be converted at that time. See "Contingent Deferred Sales
Charge Alternative--Class B Shares."

   Class C Shares. Class C shares are sold at net asset value with no initial
sales charge but are subject to a CDSC of 1.0% on redemptions made within one
year after purchase. This CDSC may be waived for certain redemptions. They are
subject to an annual 12b-1 fee of up to 1.0% of the average daily net assets of
the Class C shares. The Class C shares' distribution fee may cause that Class to
have higher expenses and pay lower dividends than Class A or Class D shares. See
"Level Load Alternative--Class C Shares."

   Class D Shares. Class D shares are available only to limited categories of
investors (see "No Load Alternative--Class D Shares" below). Class D

                               14
<PAGE>
shares are sold at net asset value with no initial sales charge or CDSC. They
are not subject to any 12b-1 fees. See "No Load Alternative--Class D Shares."

   Selecting a Particular Class. In deciding which Class of Fund shares to
purchase, investors should consider the following factors, as well as any other
relevant facts and circumstances:

   The decision as to which Class of shares is more beneficial to an investor
depends on the amount and intended length of his or her investment. Investors
who prefer an initial sales charge alternative may elect to purchase Class A
shares. Investors qualifying for significantly reduced or, in the case of
purchases of $1 million or more, no initial sales charges may find Class A
shares particularly attractive because similar sales charge reductions are not
available with respect to Class B or Class C shares. Moreover, Class A shares
are subject to lower ongoing expenses than are Class B or Class C shares over
the term of the investment. As an alternative, Class B and Class C shares are
sold without any initial sales charge so the entire purchase price is
immediately invested in the Fund. Any investment return on these additional
investment amounts may partially or wholly offset the higher annual expenses of
these Classes. Because the Fund's future return cannot be predicted, however,
there can be no assurance that this would be the case.

   Finally, investors should consider the effect of the CDSC period and any
conversion rights of the Classes in the context of their own investment time
frame. For example, although Class C shares are subject to a significantly lower
CDSC upon redemptions, they do not, unlike Class B shares, convert into Class A
shares after approximately ten years, and, therefore, are subject to an ongoing
12b-1 fee of 1.0% (rather than the 0.25% fee applicable to Class A shares) for
an indefinite period of time. Thus, Class B shares may be more attractive than
Class C shares to investors with longer term investment outlooks. Other
investors, however, may elect to purchase Class C shares if, for example, they
determine that they do not wish to be subject to a front-end sales charge and
they are uncertain as to the length of time they intend to hold their shares.

   
   For the purpose of meeting the $5 million (or $25 million) minimum investment
amount for Class D shares, holdings of Class A shares in all Dean Witter
Multi-Class Funds, shares of FSC Funds and shares of Dean Witter Funds for which
such shares have been exchanged, will be included together with the current
investment amount. 
    

   Sales personnel may receive different compensation for selling each Class of
shares. Investors should understand that the purpose of a CDSC is the same as
that of the initial sales charge in that the sales charges applicable to each
Class provide for the financing of the distribution of shares of that Class.

   Set forth below is a chart comparing the sales charge, 12b-1 fees and
conversion options applicable to each Class of shares:

<TABLE>
<CAPTION>
                                                           CONVERSION
   CLASS          SALES CHARGE          12B-1 FEE           FEATURE
- ---------  ------------------------- -------------  -----------------------
<S>        <C>                       <C>            <C>
     A        Maximum 5.25%               0.25%             No
              initial sales charge
              reduced for 
              purchases of 
              $25,000 and over;
              shares wold without
              an initial sales 
              charge generally
              subject to a 1.0%
              CDSC during first
              year.                                                
- ---------  ------------------------- -------------  -----------------------
     B        Maximum 5.0%                1.0%    B shares convert              
              CDSC during the first               to A shares                   
              year decreasing                     automatically after           
              to 0 after six years                approximately       
                                                  ten years           
          
- ---------  ------------------------- -------------  -----------------------
     C        1.0% CDSC during            1.0%              No
              first year                                          
- ---------  ------------------------- -------------  -----------------------
     D         None                       None               No
</TABLE>

   See "Purchase of Fund Shares" and "The Fund and its Management" for a
complete description of the sales charges and service and distribution fees for
each Class of shares and "Determination of Net Asset Value," "Dividends,
Distributions and Taxes" and "Shareholder Services--Exchange Privilege" for
other differences between the Classes of shares.

INITIAL SALES CHARGE ALTERNATIVE--CLASS A SHARES

   Class A shares are sold at net asset value plus an initial sales charge.
In some cases, reduced

                               15
<PAGE>
sales charges may be available, as described below. Investments of $1 million or
more (and investments by certain other limited categories of investors) are not
subject to any sales charges at the time of purchase but are subject to a CDSC
of 1.0% on redemptions made within one year after purchase (calculated from the
last day of the month in which the shares were purchased), except for certain
specific circumstances. The CDSC will be assessed on an amount equal to the
lesser of the current market value or the cost of the shares being redeemed. The
CDSC will not be imposed (i) in the circumstances set forth below in the section
"Contingent Deferred Sales Charge Alternative--Class B Shares--CDSC Waivers,"
except that the references to six years in the first paragraph of that section
shall mean one year in the case of Class A shares, and (ii) in the circumstances
identified in the section "Additional Net Asset Value Purchase Options" below.
Class A shares are also subject to an annual 12b-1 fee of up to 0.25% of the
average daily net assets of the Class.

   The offering price of Class A shares will be the net asset value per share
next determined following receipt of an order (see "Determination of Net Asset
Value" below), plus a sales charge (expressed as a percentage of the offering
price) on a single transaction as shown in the following table:

<TABLE>
<CAPTION>
                                SALES CHARGE
                      --------------------------------
                       PERCENTAGE OF     APPROXIMATE
  AMOUNT OF SINGLE    PUBLIC OFFERING   PERCENTAGE OF
     TRANSACTION           PRICE       AMOUNT INVESTED
- --------------------  --------------- ---------------
<S>                   <C>             <C>
Less than $25,000  ..      5.25%            5.54%
$25,000 but less
 than $50,000 .......      4.75%            4.99%
$50,000 but less
 than $100,000 ......      4.00%            4.17%
$100,000 but less
 than $250,000 ......      3.00%            3.09%
$250,000 but less
 than $1 million  ...      2.00%            2.04%
$1 million and over          0                 0
</TABLE>

   Upon notice to all Selected Broker-Dealers, the Distributor may reallow up to
the full applicable sales charge as shown in the above schedule during periods
specified in such notice. During periods when 90% or more of the sales charge is
reallowed, such Selected Broker-Dealers may be deemed to be underwriters as that
term is defined in the Securities Act of 1933.

   The above schedule of sales charges is applicable to purchases in a single
transaction by, among others: (a) an individual; (b) an individual, his or her
spouse and their children under the age of 21 purchasing shares for his, her or
their own accounts; (c) a trustee or other fiduciary purchasing shares for a
single trust estate or a single fiduciary account; (d) a pension, profit-sharing
or other employee benefit plan qualified or non-qualified under Section 401 of
the Internal Revenue Code; (e) tax-exempt organizations enumerated in Section
501(c)(3) or (13) of the Internal Revenue Code; (f) employee benefit plans
qualified under Section 401 of the Internal Revenue Code of a single employer or
of employers who are "affiliated persons" of each other within the meaning of
Section 2(a)(3)(c) of the Act; and for investments in Individual Retirement
Accounts of employees of a single employer through Systematic Payroll Deduction
plans; or (g) any other organized group of persons, whether incorporated or not,
provided the organization has been in existence for at least six months and has
some purpose other than the purchase of redeemable securities of a registered
investment company at a discount.

   Combined Purchase Privilege. Investors may have the benefit of reduced sales
charges in accordance with the above schedule by combining purchases of Class A
shares of the Fund in single transactions with the purchase of Class A shares of
other Dean Witter Multi-Class Funds and shares of FSC Funds. The sales charge
payable on the purchase of the Class A shares of the Fund, the Class A shares of
the other Dean Witter Multi-Class Funds and the shares of the FSC Funds will be
at their respective rates applicable to the total amount of the combined
concurrent purchases of such shares.

   Right of Accumulation. The above persons and entities may benefit from a
reduction of the sales charges in accordance with the above schedule if the
cumulative net asset value of Class A

                               16
<PAGE>
   
shares purchased in a single transaction, together with shares of the Fund and
other Dean Witter Funds previously purchased at a price including a front-end
sales charge (including shares of the Fund and other Dean Witter Funds acquired
in exchange for those shares, and including in each case shares acquired through
reinvestment of dividends and distributions), which are held at the time of such
transaction, amounts to $25,000 or more. If such investor has a cumulative net
asset value of shares of FSC Funds and Class A and Class D shares that, together
with the current investment amount, is equal to at least $5 million ($25 million
for certain qualified plans), such investor is eligible to purchase Class D
shares subject to the $1,000 minimum initial investment requirement of that
Class of the Fund. See "No Load Alternative--Class D Shares" below. 
    

   The Distributor must be notified by DWR or a Selected Broker-Dealer or the
shareholder at the time a purchase order is placed that the purchase qualifies
for the reduced charge under the Right of Accumulation. Similar notification
must be made in writing by the dealer or shareholder when such an order is
placed by mail. The reduced sales charge will not be granted if: (a) such
notification is not furnished at the time of the order; or (b) a review of the
records of the Selected Broker-Dealer or the Transfer Agent fails to confirm the
investor's represented holdings.

   Letter of Intent. The foregoing schedule of reduced sales charges will also
be available to investors who enter into a written Letter of Intent providing
for the purchase, within a thirteen-month period, of Class A shares of the Fund
from DWR or other Selected Broker-Dealers. The cost of Class A shares of the
Fund or shares of other Dean Witter Funds which were previously purchased at a
price including a front-end sales charge during the 90-day period prior to the
date of receipt by the Distributor of the Letter of Intent, or of Class A shares
of the Fund or shares of other Dean Witter Funds acquired in exchange for shares
of such funds purchased during such period at a price including a front-end
sales charge, which are still owned by the shareholder, may also be included in
determining the applicable reduction.

   Additional Net Asset Value Purchase Options. In addition to investments of $1
million or more, Class A shares also may be purchased at net asset value by the
following:

   
   (1) trusts for which MSDW Trust (an affiliate of the Investment Manager)
provides discretionary trustee services;

   (2) persons participating in a fee-based program approved by the Distributor,
pursuant to which such persons pay an asset based fee for services in the nature
of investment advisory, administrative and/or brokerage services (such
investments are subject to all of the terms and conditions of such programs,
which may include termination fees, mandatory redemption upon termination and
such other circumstances as specified in the programs' agreements, and
restrictions on transferability of Fund shares);

   (3) employer-sponsored 401(k) and other plans qualified under Section 401(a)
of the Internal Revenue Code ("Qualified Retirement Plans") with at least 200
eligible employees and for which MSDW Trust serves as Trustee or DWR's
Retirement Plan Services serves as recordkeeper pursuant to a written
Recordkeeping Services Agreement;

   (4) Qualified Retirement Plans for which MSDW Trust serves as Trustee or
DWR's Retirement Plan Services serves as recordkeeper pursuant to a written
Recordkeeping Services Agreement whose Class B shares have converted to Class A
shares, regardless of the plan's asset size or number of eligible employees;
    

   (5) investors who are clients of a Dean Witter account executive who joined
Dean Witter from another investment firm within six months prior to the date of
purchase of Fund shares by such investors, if the shares are being purchased
with the proceeds from a redemption of shares of an open-end proprietary mutual
fund of the account executive's previous firm which imposed either a front-end
or deferred sales charge, provided such purchase was made within sixty days
after the redemption and the proceeds of the redemption had been maintained in
the interim in cash or a money market fund; and

                               17
<PAGE>

   (6) other categories of investors, at the discretion of the Board, as
disclosed in the then current prospectus of the Fund.

   No CDSC will be imposed on redemptions of shares purchased pursuant to
paragraphs (1), (2) or (5), above.

   For further information concerning purchases of the Fund's shares, contact
DWR or another Selected Broker-Dealer or consult the Statement of Additional
Information.

CONTINGENT DEFERRED SALES CHARGE ALTERNATIVE--CLASS B SHARES

   
   Class B shares are sold at net asset value next determined without an initial
sales charge so that the full amount of an investor's purchase payment may be
immediately invested in the Fund. A CDSC, however, will be imposed on most Class
B shares redeemed within six years after purchase. The CDSC will be imposed on
any redemption of shares if after such redemption the aggregate current value of
a Class B account with the Fund falls below the aggregate amount of the
investor's purchase payments for Class B shares made during the six years (or,
in the case of shares held by certain Qualified Retirement Plans, three years)
preceding the redemption. In addition, Class B shares are subject to an annual
12b-1 fee of 1.0% of the average daily net assets of Class B.     

   Except as noted below, Class B shares of the Fund which are held for six
years or more after purchase (calculated from the last day of the month in which
the shares were purchased) will not be subject to any CDSC upon redemption.
Shares redeemed earlier than six years after purchase may, however, be subject
to a CDSC which will be a percentage of the dollar amount of shares redeemed and
will be assessed on an amount equal to the lesser of the current market value or
the cost of the shares being redeemed. The size of this percentage will depend
upon how long the shares have been held, as set forth in the following table:

<TABLE>
<CAPTION>
         YEAR SINCE
          PURCHASE            CDSC AS A PERCENTAGE
        PAYMENT MADE           OF AMOUNT REDEEMED
- --------------------------  ------------------------
<S>                         <C>
First......................           5.0%
Second.....................           4.0%
Third......................           3.0%
Fourth.....................           2.0%
Fifth......................           2.0%
Sixth......................           1.0%
Seventh and thereafter ....           None
</TABLE>

   
   In the case of Class B shares of the Fund purchased by Qualified Retirement
Plans for which MSDW Trust serves as Trustee or DWR's Retirement Plan Services
serves as recordkeeper pursuant to a written Recordkeeping Services Agreement,
shares held for three years or more after purchase (calculated as described in
the paragraph above) will not be subject to any CDSC upon redemption. However,
shares redeemed earlier than three years after purchase may be subject to a CDSC
(calculated as described in the paragraph above), the percentage of which will
depend on how long the shares have been held, as set forth in the following
table:

    

   
<TABLE>
<CAPTION>
         YEAR SINCE
          PURCHASE            CDSC AS A PERCENTAGE
        PAYMENT MADE           OF AMOUNT REDEEMED
- --------------------------  ------------------------
<S>                         <C>
First .....................           2.0%
Second ....................           2.0%
Third .....................           1.0%
Fourth and thereafter  ....           None
</TABLE>
    

   
   CDSC Waivers. A CDSC will not be imposed on: (i) any amount which represents
an increase in value of shares purchased within the six years (or, in the case
of shares held by certain Qualified Retirement Plans, three years) preceding the
redemption; (ii) the current net asset value of shares purchased more than six
years (or, in the case of shares held by certain Qualified Retirement Plans,
three years) prior to the redemption; and (iii) the current net asset value of
shares purchased through reinvestment of dividends or distributions and/or
shares acquired in exchange for shares of FSC Funds or of other Dean Witter
Funds acquired in exchange for such shares.
    

                               18
<PAGE>
Moreover, in determining whether a CDSC is appli-cable it will be assumed that
amounts described in (i), (ii) and (iii) above (in that order) are redeemed
first.

   In addition, the CDSC, if otherwise applicable, will be waived in the case
of:

   (1) redemptions of shares held at the time a shareholder dies or becomes
disabled, only if the shares are: (A) registered either in the name of an
individual shareholder (not a trust), or in the names of such shareholder and
his or her spouse as joint tenants with right of survivorship; or (B) held in a
qualified corporate or self-employed retirement plan, Individual Retirement
Account ("IRA") or Custodial Account under Section 403(b)(7) of the Internal
Revenue Code ("403(b) Custodial Account"), provided in either case that the
redemption is requested within one year of the death or initial determination of
disability;

   (2) redemptions in connection with the following retirement plan
distributions: (A) lump-sum or other distributions from a qualified corporate or
self-employed retirement plan following retirement (or, in the case of a "key
employee" of a "top heavy" plan, following attainment of age 59 1/2); (B)
distributions from an IRA or 403(b) Custodial Account following attainment of
age 59 1/2; or (C) a tax-free return of an excess contribution to an IRA; and

   
   (3) all redemptions of shares held for the benefit of a participant in a
Qualified Retirement Plan which offers investment companies managed by the
Investment Manager or its subsidiary, Dean Witter Services Company Inc., as
self-directed investment alternatives and for which MSDW Trust serves as Trustee
or DWR's Retirement Plan Services serves as recordkeeper pursuant to a written
Recordkeeping Services Agreement ("Eligible Plan"), provided that either: (A)
the plan continues to be an Eligible Plan after the redemption; or (B) the
redemption is in connection with the complete termination of the plan involving
the distribution of all plan assets to participants.
    

   With reference to (1) above, for the purpose of determining disability, the
Distributor utilizes the definition of disability contained in Section 72(m)(7)
of the Internal Revenue Code, which relates to the inability to engage in
gainful employment. With reference to (2) above, the term "distribution" does
not encompass a direct transfer of IRA, 403(b) Custodial Account or retirement
plan assets to a successor custodian or trustee. All waivers will be granted
only following receipt by the Distributor of confirmation of the shareholder's
entitlement.

   
   Conversion to Class A Shares. Class B shares will convert automatically to
Class A shares, based on the relative net asset values of the shares of the two
Classes on the conversion date, which will be approximately ten (10) years after
the date of the original purchase. The ten year period is calculated from the
last day of the month in which the shares were purchased or, in the case of
Class B shares acquired through an exchange or a series of exchanges, from the
last day of the month in which the original Class B shares were purchased,
provided that shares acquired in exchange for shares of another fund originally
purchased before May 1, 1997 will convert to Class A shares in May, 2007. The
conversion of shares purchased on or after May 1, 1997 will take place in the
month following the tenth anniversary of the purchase. There will also be
converted at that time such proportion of Class B shares acquired through
automatic reinvestment of dividends and distributions owned by the shareholder
as the total number of his or her Class B shares converting at the time bears to
the total number of outstanding Class B shares purchased and owned by the
shareholder. In the case of Class B shares held by a Qualified Retirement Plan
for which MSDW Trust serves as Trustee or DWR's Retirement Plan Services serves
as recordkeeper pursuant to a written Recordkeeping Services Agreement, the plan
is treated as a single investor and all Class B shares will convert to Class A
shares on the conversion date of the first shares of a Dean Witter Multi-Class
Fund purchased by that plan. In the case of Class B shares previously exchanged
for shares of an "Exchange Fund" (see "Shareholder Services--Exchange
Privilege"), the period of time the shares were held in the Exchange Fund
(calcu- 
    

                               19
<PAGE>
lated from the last day of the month in which the Exchange Fund shares were
acquired) is excluded from the holding period for conversion. If those shares
are subsequently re-exchanged for Class B shares of a Dean Witter Multi-Class
Fund, the holding period resumes on the last day of the month in which Class B
shares are reacquired.

   If a shareholder has received share certificates for Class B shares, such
certificates must be delivered to the Transfer Agent at least one week prior to
the date for conversion. Class B shares evidenced by share certificates that are
not received by the Transfer Agent at least one week prior to any conversion
date will be converted into Class A shares on the next scheduled conversion date
after such certificates are received.

   Effectiveness of the conversion feature is subject to the continuing
availability of a ruling of the Internal Revenue Service or an opinion of
counsel that (i) the conversion of shares does not constitute a taxable event
under the Internal Revenue Code, (ii) Class A shares received on conversion will
have a basis equal to the shareholder's basis in the converted Class B shares
immediately prior to the conversion, and (iii) Class A shares received on
conversion will have a holding period that includes the holding period of the
converted Class B shares. The conversion feature may be suspended if the ruling
or opinion is no longer available. In such event, Class B shares would continue
to be subject to Class B 12b-1 fees.

LEVEL LOAD ALTERNATIVE--CLASS C SHARES

   Class C shares are sold at net asset value next determined without an initial
sales charge but are subject to a CDSC of 1.0% on most redemptions made within
one year after purchase (calculated from the last day of the month in which the
shares were purchased). The CDSC will be assessed on an amount equal to the
lesser of the current market value or the cost of the shares being redeemed. The
CDSC will not be imposed in the circumstances set forth above in the section
"Contingent Deferred Sales Charge Alternative--Class B Shares--CDSC Waivers,"
except that the references to six years in the first paragraph of that section
shall mean one year in the case of Class C shares. Class C shares are subject to
an annual 12b-1 fee of up to 1.0% of the average daily net assets of the Class.
Unlike Class B shares, Class C shares have no conversion feature and,
accordingly, an investor that purchases Class C shares will be subject to 12b-1
fees applicable to Class C shares for an indefinite period subject to annual
approval by the Fund's Board of Trustees and regulatory limitations.

NO LOAD ALTERNATIVE--CLASS D SHARES

   
   Class D shares are offered without any sales charge on purchase or redemption
and without any 12b-1 fee. Class D shares are offered only to investors meeting
an initial investment minimum of $5 million ($25 million for Qualified
Retirement Plans for which MSDW Trust serves as Trustee or DWR's Retirement Plan
Services serves as recordkeeper pursuant to a written Recordkeeping Services
Agreement) and the following categories of investors: (i) investors
participating in the InterCapital mutual fund asset allocation program pursuant
to which such persons pay an asset based fee; (ii) persons participating in a
fee-based program approved by the Distributor, pursuant to which such persons
pay an asset based fee for services in the nature of investment advisory,
administrative and/or brokerage services (subject to all of the terms and
conditions of such programs referred to in (i) and (ii) above, which may include
termination fees, mandatory redemption upon termination and such other
circumstances as specified in the programs' agreements, and restrictions on
transferability of Fund shares); (iii) 401(k) plans established by DWR and SPS
Transaction Services, Inc. (an affiliate of DWR) for their employees; (iv)
certain Unit Investment Trusts sponsored by DWR; (v) certain other open-end
investment companies whose shares are distributed by the Distributor; and (vi)
other categories of investors, at the discretion of the Board, as disclosed in
the then current prospectus of the Fund. Investors who require a $5 million (or
$25 million) minimum initial investment to qualify to purchase Class D shares
may satisfy that requirement by investing that amount in a single transac- 
    

                               20
<PAGE>
   
tion in Class D shares of the Fund and other Dean Witter Multi-Class Funds,
subject to the $1,000 minimum initial investment required for that Class of the
Fund. In addition, for the purpose of meeting the $5 million (or $25 million)
minimum investment amount, holdings of Class A shares in all Dean Witter
Multi-Class Funds, shares of FSC Funds and shares of Dean Witter Funds for which
such shares have been exchanged, will be included together with the current
investment amount. If a shareholder redeems Class A shares and purchases Class D
shares, such redemption may be a taxable event.
    

PLAN OF DISTRIBUTION

   
   The Fund has adopted a Plan of Distribution pursuant to Rule 12b-1 under the
Act with respect to the distribution of Class A, Class B and Class C shares of
the Fund. In the case of Class A and Class C shares, the Plan provides that the
Fund will reimburse the Distributor and others for the expenses of certain
activities and services incurred by them specifically on behalf of those shares.
Reimbursements for these expenses will be made in monthly payments by the Fund
to the Distributor, which will in no event exceed amounts equal to payments at
the annual rates of 0.25% and 1.0% of the average daily net assets of Class A
and Class C, respectively. In the case of Class B shares, the Plan provides that
the Fund will pay the Distributor a fee, which is accrued daily and paid
monthly, at the annual rate of 1.0% of the average daily net assets of Class B.
The fee is treated by the Fund as an expense in the year it is accrued. In the
case of Class A shares, the entire amount of the fee currently represents a
service fee within the meaning of the NASD guidelines. In the case of Class B
and Class C shares, a portion of the fee payable pursuant to the Plan, equal to
0.25% of the average daily net assets of each of these Classes, is currently
characterized as a service fee. A service fee is a payment made for personal
service and/or the maintenance of shareholder accounts. 
    

   Additional amounts paid under the Plan in the case of Class B and Class C
shares are paid to the Distributor for services provided and the expenses borne
by the Distributor and others in the distribution of the shares of those
Classes, including the payment of commissions for sales of the shares of those
Classes and incentive compensation to and expenses of DWR's account executives
and others who engage in or support distribution of shares or who service
shareholder accounts, including overhead and telephone expenses; printing and
distribution of prospectuses and reports used in connection with the offering of
the Fund's shares to other than current shareholders; and preparation, printing
and distribution of sales literature and advertising materials. In addition, the
Distributor may utilize fees paid pursuant to the Plan in the case of Class B
shares to compensate DWR and other Selected Broker-Dealers for their opportunity
costs in advancing such amounts, which compensation would be in the form of a
carrying charge on any unreimbursed expenses.

   
   For the fiscal period September 26, 1997 (commencement of operations) through
February 28, 1998, the Fund accrued payments under the Plan amounting to
$12,848, $1,127,620, and $75,709 for Class A, Class B and Class C, respectively.
Such payments represent, on an annualized basis, 0.24%, 1.0% and 1.0% of the
average daily net assets of Class A, Class B and Class C, respectively, for such
period.

   In the case of Class B shares, at any given time, the expenses in
distributing Class B shares of the Fund may be in excess of the total of (i) the
payments made by the Fund pursuant to the Plan, and (ii) the proceeds of CDSCs
paid by investors upon the redemption of Class B shares. For example, if $1
million in expenses in distributing Class B shares of the Fund had been incurred
and $750,000 had been received as described in (i) and (ii) above, the excess
expense would amount to $250,000. The Distributor has advised the Fund that such
excess amounts, including the carrying charge described above, totalled
$15,470,964 at February 28, 1998, which was equal to 4.07% of the net assets of
Class B on such date. Because there is no requirement under the Plan that the
Distributor be reimbursed for all distribution expenses or any 
    

                               21
<PAGE>
   
requirement that the Plan be continued from year to year, this excess amount
does not constitute a liability of the Fund. Although there is no legal
obligation for the Fund to pay expenses incurred in excess of payments made to
the Distributor under the Plan, and the proceeds of CDSCs paid by investors upon
redemption of shares, if for any reason the Plan is terminated the Trustees will
consider at that time the manner in which to treat such expenses. Any cumulative
expenses incurred, but not yet recovered through distribution fees or CDSCs, may
or may not be recovered through future distribution fees or CDSCs.

   In the case of Class A and Class C shares, expenses incurred pursuant to the
Plan in any calendar year in excess of 0.25% or 1.0% of the average daily net
assets of Class A or Class C, respectively, will not be reimbursed by the Fund
through payments in any subsequent year, except that expenses representing a
gross sales commission credited to account executives at the time of sale may be
reimbursed in the subsequent calendar year. The Distributor has advised the Fund
that unreimbursed expenses representing a gross sales commission credited to
account executives at the time of sale totalled $145,457 in the case of Class C
at December 31, 1997, which amount was equal to 0.76% of the net assets of Class
C on such date, and that there were no such expenses that may be reimbursed in
the subsequent year in the case of Class A on such date. No interest or other
financing charges will be incurred on any Class A or Class C distribution
expenses incurred by the Distributor under the Plan or on any unreimbursed
expenses due to the Distributor pursuant to the Plan. 
    

DETERMINATION OF NET ASSET VALUE

   
   The net asset value per share is determined once daily at 4:00 p.m., New York
time, on each day that the New York Stock Exchange is open (or, on days when the
New York Stock Exchange closes prior to 4:00 p.m., at such earlier time), by
taking the net assets of the Fund, dividing by the number of shares outstanding
and adjusting to the nearest cent. The assets belonging to the Class A, Class B,
Class C and Class D shares will be invested together in a single portfolio. The
net asset value of each Class, however, will be determined separately by
subtracting each Class's accrued expenses and liabilities. The net asset value
per share will not be determined on Good Friday and on such other federal and
non-federal holidays as are observed by the New York Stock Exchange. 
    

   In the calculation of the Fund's net asset value: (1) an equity portfolio
security listed or traded on the New York or American Stock Exchange or other
stock exchange is valued at its latest sale price on that exchange prior to the
time assets are valued; if there were no sales that day, the security is valued
at the latest bid price (in cases where a security is traded on more than one
exchange, the security is valued on the exchange designated as the primary
market pursuant to procedures adopted by the Trustees); (2) all other portfolio
securities for which over-the-counter market quotations are readily available
are valued at the latest bid price; (3) when market quotations are not readily
available, including circumstances under which it is determined by the
Investment Manager that sale or bid prices are not reflective of a security's
market value, portfolio securities are valued at their fair value as determined
in good faith under procedures established by and under the general supervision
of the Fund's Trustees (valuation of debt securities for which market quotations
are not readily available may be based upon current market prices of securities
which are comparable in coupon, rating and maturity or an appropriate matrix
utilizing similar factors); (4) the value of short-term debt securities which
mature at a date less than sixty days subsequent to valuation date will be
determined on an amortized cost or amortized value basis; and (5) the value of
other assets will be determined in good faith at fair value under procedures
established by and under the general supervision of the Fund's Trustees.
Dividends receivable are accrued as of the ex-dividend date. Interest income is
accrued daily. Certain securities in the Fund's portfolio may be valued by an
outside pricing service approved by the Fund's Trustees.

                               22
<PAGE>
SHAREHOLDER SERVICES
- -----------------------------------------------------------------------------

   Automatic Investment of Dividends and Distributions. All income dividends and
capital gains distributions are automatically paid in full and fractional shares
of the applicable Class of the Fund (or, if specified by the shareholder, in
shares of any other open-end Dean Witter Fund), unless the shareholder requests
that they be paid in cash. Shares so acquired are acquired at net asset value
and are not subject to the imposition of a front-end sales charge or a CDSC (see
"Redemptions and Repurchases").

   Investment of Dividends or Distributions Received in Cash. Any shareholder
who receives a cash payment representing a dividend or capital gains
distribution may invest such dividend or distribution in shares of the
applicable Class at the net asset value next determined after receipt by the
Transfer Agent, by returning the check or the proceeds to the Transfer Agent
within thirty days after the payment date. Shares so acquired are acquired at
net asset value and are not subject to the imposition of a front-end sales
charge or a CDSC (see "Redemptions and Repurchases").

   EasyInvest (Service Mark). Shareholders may subscribe to EasyInvest, an
automatic purchase plan which provides for any amount from $100 to $5,000 to be
transferred automatically from a checking or savings account or following
redemption of shares of a Dean Witter money market fund, on a semi-monthly,
monthly or quarterly basis, to the Transfer Agent for investment in shares of
the Fund (see "Purchase of Fund Shares" and "Redemptions and
Repurchases--Involuntary Redemption").

   Systematic Withdrawal Plan. A systematic withdrawal plan (the "Withdrawal
Plan") is available for shareholders who own or purchase shares of the Fund
having a minimum value of $10,000 based upon the then current net asset value.
The Withdrawal Plan provides for monthly or quarterly (March, June, September
and December) checks in any amount, not less than $25, or in any whole
percentage of the account balance, on an annualized basis. Any applicable CDSC
will be imposed on shares redeemed under the Withdrawal Plan (see "Purchase of
Fund Shares"). Therefore, any shareholder participating in the Withdrawal Plan
will have sufficient shares redeemed from his or her account so that the
proceeds (net of any applicable CDSC) to the shareholder will be the designated
monthly or quarterly amount. Withdrawal plan payments should not be considered
as dividends, yields or income. If periodic withdrawal plan payments
continuously exceed net investment income and net capital gains, the
shareholder's original investment will be correspondingly reduced and ultimately
exhausted. Each withdrawal constitutes a redemption of shares and any gain or
loss realized must be recognized for federal income tax purposes.

   Shareholders should contact their DWR or other Selected Broker-Dealer account
executive or the Transfer Agent for further information about any of the above
services.

   Tax-Sheltered Retirement Plans. Retirement plans are available for use by
corporations, the self-employed, Individual Retirement Accounts and Custodial
Accounts under Section 403(b)(7) of the Internal Revenue Code. Adoption of such
plans should be on advice of legal counsel or tax adviser.

   For further information regarding plan administration, custodial fees and
other details, investors should contact their DWR or other Selected
Broker-Dealer account executive or the Transfer Agent.

EXCHANGE PRIVILEGE

   Shares of each Class may be exchanged for shares of the same Class of any
other Dean Witter Multi-Class Fund without the imposition of any exchange fee.
Shares may also be exchanged for shares of the following funds: Dean Witter
Short-Term U.S. Treasury Trust, Dean Witter Limited Term Municipal Trust, Dean
Witter Short-Term Bond Fund, Dean Witter Intermediate Term U.S. Treasury Trust
and five Dean Witter funds which are money market funds (the "Exchange Funds").
Class A shares may also be exchanged for shares of Dean Witter Multi-

                               23
<PAGE>
   
State Municipal Series Trust and Dean Witter Hawaii Municipal Trust, which are
Dean Witter Funds sold with a front-end sales charge ("FSC Funds"). Class B
shares may also be exchanged for shares of Dean Witter Global Short-Term Income
Fund Inc. ("Global Short-Term") which is a Dean Witter Fund offered with a CDSC.
Exchanges may be made after the shares of the Fund acquired by purchase (not by
exchange or dividend reinvestment) have been held for thirty days. There is no
waiting period for exchanges of shares acquired by exchange or dividend
reinvestment.

   An exchange to another Dean Witter Multi-Class Fund, any FSC Fund, Global
Short-Term or any Exchange Fund that is not a money market fund is on the basis
of the next calculated net asset value per share of each fund after the exchange
order is received. When exchanging into a money market fund from the Fund,
shares of the Fund are redeemed out of the Fund at their next calculated net
asset value and the proceeds of the redemption are used to purchase shares of
the money market fund at their net asset value determined the following day.
Subsequent exchanges between any of the money market funds and any of the Dean
Witter Multi-Class Funds, FSC Funds, Global Short-Term or any Exchange Fund that
is not a money market fund can be effected on the same basis.

   No CDSC is imposed at the time of any exchange of shares, although any
applicable CDSC will be imposed upon ultimate redemption. During the period of
time the shareholder remains invested in an Exchange Fund (calculated from the
last day of the month in which the Exchange Fund shares were acquired) the
holding period (for the purpose of determining the rate of the CDSC) is frozen.
If those shares are subsequently re-exchanged for shares of a Dean Witter
Multi-Class Fund or shares of Global Short-Term, the holding period previously
frozen when the first exchange was made resumes on the last day of the month in
which shares of a Dean Witter Multi-Class Fund or shares of Global Short-Term
are reacquired. Thus, the CDSC is based upon the time (calculated as described
above) the shareholder was invested in shares of a Dean Witter Multi-Class Fund
or in shares of Global Short-Term (see "Purchase of Fund Shares"). In the case
of exchanges of Class A shares which are subject to a CDSC, the holding period
also includes the time (calculated as described above) the shareholder was
invested in shares of a FSC Fund. In the case of shares exchanged into an
Exchange Fund on or after April 23, 1990, upon a redemption of shares which
results in a CDSC being imposed, a credit (not to exceed the amount of the CDSC)
will be given in an amount equal to the Exchange Fund 12b-1 distribution fees,
if any, incurred on or after that date which are attributable to those shares.
(Exchange Fund 12b-1 distribution fees are described in the prospectuses for
those funds.) Class B shares of the Fund acquired in exchange for shares of
Global Short-Term or Class B shares of another Dean Witter Multi-Class Fund
having a different CDSC schedule than that of this Fund will be subject to the
higher CDSC schedule, even if such shares are subsequently re-exchanged for
shares of the fund with the lower CDSC schedule. 
    

   Additional Information Regarding Exchanges. Purchases and exchanges should be
made for investment purposes only. A pattern of frequent exchanges may be deemed
by the Investment Manager to be abusive and contrary to the best interests of
the Fund's other shareholders and, at the Investment Manager's discretion, may
be limited by the Fund's refusal to accept additional purchases and/or exchanges
from the investor. Although the Fund does not have any specific definition of
what constitutes a pattern of frequent exchanges, and will consider all relevant
factors in determining whether a particular situation is abusive and contrary to
the best interests of the Fund and its other shareholders, investors should be
aware that the Fund and each of the other Dean Witter Funds may in their
discretion limit or otherwise restrict the number of times this Exchange
Privilege may be exercised by any investor. Any such restriction will be made by
the Fund on a prospective basis only, upon notice to the shareholder not later
than ten days following such shareholder's most recent exchange. Also, the
Exchange Privilege may be terminated or revised at

                               24
<PAGE>
any time by the Fund and/or any of such Dean Witter Funds for which shares of
the Fund have been exchanged, upon such notice as may be required by applicable
regulatory agencies. Shareholders maintaining margin accounts with DWR or
another Selected Broker-Dealer are referred to their account executive regarding
restrictions on exchange of shares of the Fund pledged in the margin account.

   The current prospectus for each fund describes its investment objective(s)
and policies, and shareholders should obtain a copy and read it carefully before
investing. Exchanges are subject to the minimum investment requirement of each
Class of shares and any other conditions imposed by each fund. In the case of a
shareholder holding a share certificate or certificates, no exchanges may be
made until all applicable share certificates have been received by the Transfer
Agent and deposited in the shareholder's account. An exchange will be treated
for federal income tax purposes the same as a repurchase or redemption of shares
on which the shareholder has realized a capital gain or loss. However, the
ability to deduct capital losses on an exchange may be limited in situations
where there is an exchange of shares within ninety days after the shares are
purchased. The Exchange Privilege is only available in states where an exchange
may legally be made.

   If DWR or another Selected Broker-Dealer is the current dealer of record and
its account numbers are part of the account information, shareholders may
initiate an exchange of shares of the Fund for shares of any of the above Dean
Witter Funds (for which the Exchange Privilege is available) pursuant to this
Exchange Privilege by contacting their DWR or other Selected Dealer account
executive (no Exchange Privilege Authorization Form is required). Other
shareholders (and those who are clients of DWR or another Selected Broker-Dealer
but who wish to make exchanges directly by writing or telephoning the Transfer
Agent) must complete and forward to the Transfer Agent an Exchange Privilege
Authorization Form, copies of which may be obtained from the Transfer Agent, to
initiate an exchange. If the Authorization Form is used, exchanges may be made
in writing or by contacting the Transfer Agent at (800) 869-NEWS (toll-free).

   The Fund will employ reasonable procedures to confirm that exchange
instructions communicated over the telephone are genuine. Such procedures may
include requiring various forms of personal identification such as name, mailing
address, social security or other tax identification number and DWR or other
Selected Broker-Dealer account number (if any). Telephone instructions may also
be recorded. If such procedures are not employed, the Fund may be liable for any
losses due to unauthorized or fraudulent instructions.

   Telephone exchange instructions will be accepted if received by the Transfer
Agent between 9:00 a.m. and 4:00 p.m., New York time, on any day the New York
Stock Exchange is open. Any shareholder wishing to make an exchange who has
previously filed an Exchange Privilege Authorization Form and who is unable to
reach the Fund by telephone should contact his or her DWR or other Selected
Broker-Dealer account executive, if appropriate, or make a written exchange
request. Shareholders are advised that during periods of drastic economic or
market changes, it is possible that the telephone exchange procedures may be
difficult to implement, although this has not been the experience of the other
Dean Witter Funds in the past.

   For further information regarding the Exchange Privilege, shareholders should
contact their account executive or the Transfer Agent.

REDEMPTIONS AND REPURCHASES
- -----------------------------------------------------------------------------

   Redemption. Shares of each Class of the Fund can be redeemed for cash at
any time at the net asset value per share next determined less the amount of
any applicable CDSC in the case of Class

                               25
<PAGE>
A, Class B or Class C shares (see "Purchase of Fund Shares"). If shares are held
in a shareholder's account without a share certificate, a written request for
redemption to the Fund's Transfer Agent at P.O. Box 983, Jersey City, NJ 07303
is required. If certificates are held by the shareholder, the shares may be
redeemed by surrendering the certificates with a written request for redemption,
along with any additional documentation required by the Transfer Agent.

   Repurchase. DWR and other Selected Broker-Dealers are authorized to
repurchase shares represented by a share certificate which is delivered to any
of their offices. Shares held in a shareholder's account without a share
certificate may also be repurchased by DWR and other Selected Broker-Dealers
upon the telephonic or telegraphic request of the shareholder. The repurchase
price is the net asset value per share next determined (see "Purchase of Fund
Shares") after such repurchase order is received by DWR or other Selected
Broker-Dealer, reduced by any applicable CDSC.

   The CDSC, if any, will be the only fee imposed upon repurchase by the Fund or
the Distributor. The offer by DWR and other Selected Broker-Dealers to
repurchase shares may be suspended without notice by them at any time. In that
event, shareholders may redeem their shares through the Fund's Transfer Agent as
set forth above under "Redemption."

   Payment for Shares Redeemed or Repurchased. Payment for shares presented for
repurchase or redemption will be made by check within seven days after receipt
by the Transfer Agent of the certificate and/or written request in good order.
Such payment may be postponed or the right of redemption suspended under unusual
circumstances, e.g., when normal trading is not taking place on the New York
Stock Exchange. If the shares to be redeemed have recently been purchased by
check, payment of the redemption proceeds may be delayed for the minimum time
needed to verify that the check used for investment has been honored (not more
than fifteen days from the time of receipt of the check by the Transfer Agent).
Shareholders maintaining margin accounts with DWR or another Selected
Broker-Dealer are referred to their account executive regarding restrictions on
redemption of shares of the Fund pledged in the margin account.

   Reinstatement Privilege. A shareholder who has had his or her shares redeemed
or repurchased and has not previously exercised this reinstatement privilege
may, within 35 days after the date of the redemption or repurchase, reinstate
any portion or all of the proceeds of such redemption or repurchase in shares of
the Fund in the same Class from which such shares were redeemed or repurchased,
at the net asset value next determined after a reinstatement request, together
with the proceeds, is received by the Transfer Agent and receive a pro rata
credit for any CDSC paid in connection with such redemption or repurchase.

   Involuntary Redemption. The Fund reserves the right to redeem, upon sixty
days' notice and at net asset value, the shares of any shareholder (other than
shares held in an Individual Retirement Account or Custodial Account under
Section 403(b)(7) of the Internal Revenue Code) whose shares due to redemptions
by the shareholder have a value of less than $100 or such lesser amount as may
be fixed by the Board of Trustees or, in the case of an account opened through
EasyInvest, if after twelve months the shareholder has invested less than $1,000
in the account. However, before the Fund redeems such shares and sends the
proceeds to the shareholder, it will notify the shareholder that the value of
the shares is less than the applicable amount and allow the shareholder to make
an additional investment in an amount which will increase the value of the
account to at least the applicable amount before the redemption is processed. No
CDSC will be imposed on any involuntary redemption.

                               26
<PAGE>
DIVIDENDS, DISTRIBUTIONS AND TAXES
- -----------------------------------------------------------------------------

   Dividends and Distributions. The Fund declares dividends separately for each
Class of shares and intends to distribute substantially all of the Fund's net
investment income and net realized short-term and long-term capital gains, if
there are any, at least once each year. The Fund may, however, determine either
to distribute or to retain all or part of any net long-term capital gains in any
year for reinvestment.

   All dividends and any capital gains distributions will be paid in additional
shares of the same Class and automatically credited to the shareholder's account
without issuance of a share certificate unless the shareholder requests in
writing that all dividends be paid in cash. Shares acquired by dividend and
distribution reinvestments will not be subject to any front-end sales charge or
CDSC. Class B shares acquired through dividend and distribution reinvestments
will become eligible for conversion to Class A shares on a pro rata basis.
Distributions paid on Class A and Class D shares will be higher than for Class B
and Class C shares because distribution fees paid by Class B and Class C shares
are higher. (See "Shareholder Services--Automatic Investment of Dividends and
Distributions.")

   
   Taxes. Because the Fund intends to distribute all of its net investment
income and net short-term capital gains to shareholders and otherwise remain
qualified as a regulated investment company under Subchapter M of the Internal
Revenue Code, it is not expected that the Fund will be required to pay any
federal income tax. Shareholders who are required to pay taxes on their income
will normally have to pay federal income taxes, and any state income taxes, on
the dividends and distributions they receive from the Fund. Such dividends and
distributions, to the extent that they are derived from net investment income or
short-term capital gains, are taxable to the shareholder as ordinary dividend
income regardless of whether the shareholder receives such distributions in
additional shares or in cash. Any dividends declared in the last quarter of any
calendar year which are paid in the following year prior to February 1 will be
deemed, for tax purposes, to have been received by the shareholder in the prior
year. 
    

   Distributions of net long-term capital gains, if any, are taxable to
shareholders as long-term capital gains regardless of how long a shareholder has
held the Fund's shares and regardless of whether the distribution is received in
additional shares or in cash. Capital gains distributions are not eligible for
the dividends received deduction.

   The Fund may at times make payments from sources other than income or net
capital gains. Payments from such sources will, in effect, represent a return of
a portion of each shareholder's investment. All, or a portion, of such payments
will not be taxable to shareholders.

   
   After the end of the calendar year, shareholders will be sent full
information on their dividends and capital gains distributions for tax purposes.
Shareholders will also be notified of their proportionate share of long-term
capital gains distributions that are eligible for a reduced rate of tax under
the Taxpayer Relief Act of 1997. To avoid being subject to a 31% federal backup
withholding tax on taxable dividends, capital gains distributions and the
proceeds of redemptions and repurchases, shareholders' taxpayer identification
numbers must be furnished and certified as to their accuracy. 
    

   Shareholders should consult their tax advisers as to the applicability of the
foregoing to their current situation.

PERFORMANCE INFORMATION
- -----------------------------------------------------------------------------

   From time to time the Fund may quote its "total return" in advertisements and
sales literature. These figures are computed separately for Class A, Class B,
Class C and Class D shares. The total return of the Fund is based on historical
earnings and is not intended to indicate future performance. The "aver-

                               27
<PAGE>
age annual total return" of the Fund refers to a figure reflecting the average
annualized percentage increase (or decrease) in the value of an initial
investment in a Class of the Fund of $1,000 over periods of one, five and ten
years, or over the life of the Fund, if less than any of the foregoing. Total
return and average annual total return reflect all income earned by the Fund,
any appreciation or depreciation of the Fund's assets and all expenses incurred
by the applicable Class and all sales charges which will be incurred by
shareholders, for the stated periods. It also assumes reinvestment of all
dividends and distributions paid by the Fund.

   In addition to the foregoing, the Fund may advertise its total return for
each Class over different periods of time by means of aggregate, average,
year-by-year or other types of total return figures. Such calculations may or
may not reflect the deduction of any sales charge which, if reflected, would
reduce the performance quoted. The Fund may also advertise the growth of
hypothetical investments of $10,000, $50,000 and $100,000 in each Class of
shares of the Fund. The Fund from time to time may also advertise its
performance relative to certain performance rankings and indexes compiled by
independent organizations, such as mutual fund performance rankings of Lipper
Analytical Services, Inc.

ADDITIONAL INFORMATION
- -----------------------------------------------------------------------------

   Voting Rights. All shares of beneficial interest of the Fund are of $0.01 par
value and are equal as to earnings, assets and voting privileges except that
each Class will have exclusive voting privileges with respect to matters
relating to distribution expenses borne solely by such Class or any other matter
in which the interests of one Class differ from the interests of any other
Class. In addition, Class B shareholders will have the right to vote on any
proposed material increase in Class A's expenses, if such proposal is submitted
separately to Class A shareholders. Also, as discussed herein, Class A, Class B
and Class C bear the expenses related to the distribution of their respective
shares.

   The Fund is not required to hold Annual Meetings of Shareholders and in
ordinary circumstances the Fund does not intend to hold such meetings. The
Trustees may call Special Meetings of Shareholders for action by shareholder
vote as may be required by the Act or the Declaration of Trust. Under certain
circumstances, the Trustees may be removed by action of the Trustees or by the
Shareholders.

   Under Massachusetts law, shareholders of a business trust may, under certain
limited circumstances, be held personally liable as partners for the obligations
of the Fund. However, the Declaration of Trust contains an express disclaimer of
shareholder liability for acts or obligations of the Fund, requires that notice
of such Fund obligations include such disclaimer, and provides for
indemnification out of the Fund's property for any shareholder held personally
liable for the obligations of the Fund. Thus, the risk of a shareholder
incurring financial loss on account of shareholder liability is limited to
circumstances in which the Fund itself would be unable to meet its obligations.
Given the above limitations on shareholder personal liability, and the nature of
the Fund's assets and operations, the possibility of the Fund being unable to
meet its obligations is remote and thus, in the opinion of Massachusetts counsel
to the Fund, the risk to Fund shareholders of personal liability is remote.

   Code of Ethics. Directors, officers and employees of InterCapital, Dean
Witter Services Company Inc. and the Distributor are subject to a strict Code of
Ethics adopted by those companies. The Code of Ethics is intended to ensure that
the interests of shareholders and other clients are placed ahead of any personal
interest, that no undue personal benefit is obtained from a person's employment
activities and that actual and potential conflicts of interest are avoided. To
achieve these goals and comply with regulatory requirements, the Code of Ethics

                               28
<PAGE>
requires, among other things, that personal securities transactions by employees
of the companies be subject to an advance clearance process to monitor that no
Dean Witter Fund is engaged at the same time in a purchase or sale of the same
security. The Code of Ethics bans the purchase of securities in an initial
public offering, and also prohibits engaging in futures and options transactions
and profiting on short-term trading (that is, a purchase within sixty days of a
sale or a sale within sixty days of a purchase) of a security. In addition,
investment personnel may not purchase or sell a security for their personal
account within thirty days before or after any transaction in any Dean Witter
Fund managed by them. Any violations of the Code of Ethics are subject to
sanctions, including reprimand, demotion or suspension or termination of
employment. The Code of Ethics comports with regulatory requirements and the
recommendations in the 1994 report by the Investment Company Institute Advisory
Group on Personal Investing.

   Master/Feeder Conversion. The Fund reserves the right to seek to achieve its
investment objective by investing all of its investable assets in a diversified,
open-end management investment company having the same investment objective and
policies and substantially the same investment restrictions as those applicable
to the Fund.

   Shareholder Inquiries. All inquiries regarding the Fund should be directed
to the Fund at the telephone numbers or address set forth on the front cover
of this Prospectus.

                               29
<PAGE>
   
DEAN WITTER S&P 500 INDEX FUND
PORTFOLIO OF INVESTMENTS February 28, 1998 (unaudited)
    

   
<TABLE>
<CAPTION>
 NUMBER OF
   SHARES                                                                          VALUE
- ------------------------------------------------------------------------------------------------
<S>          <C>                                                              <C>
             COMMON STOCKS (98.2%)
             Advertising/Marketing Services (0.3%)
     8,466   Cognizant Corp.  ...............................................  $    422,771
     6,575   Interpublic Group of Companies, Inc.  ...........................      358,337
     8,460   Omnicom Group, Inc.  ............................................      387,045
                                                                              --------------
                                                                                  1,168,153
                                                                              --------------
             Aerospace & Defense (1.2%)
    52,223   Boeing Co.  .....................................................    2,833,098
     3,265   General Dynamics Corp.  .........................................      283,239
    10,127   Lockheed Martin Corp.  ..........................................    1,181,694
     3,481   Northrop Grumman Corp.  .........................................      483,859
                                                                              --------------
                                                                                  4,781,890
                                                                              --------------
             Agriculture Related (0.2%)
    29,108   Archer-Daniels-Midland Co.  .....................................      653,111
     3,433   Pioneer Hi-Bred International, Inc.  ............................      356,174
                                                                              --------------
                                                                                  1,009,285
                                                                              --------------
             Air Freight (0.1%)
     7,626   Federal Express Corp.  ..........................................      485,681
                                                                              --------------
             Airlines (0.4%)
     4,790   AMR Corp.*  .....................................................      606,234
     3,840   Delta Air Lines, Inc.  ..........................................      434,160
    11,426   Southwest Airlines Co.  .........................................      327,783
     4,739   US Airways Group Inc.*  .........................................      300,038
                                                                              --------------
                                                                                  1,668,215
                                                                              --------------
             Aluminum (0.3%)
    11,845   Alcan Aluminium Ltd. (Canada) ...................................      367,935
     9,006   Aluminum Co. of America  ........................................      660,815
     3,849   Reynolds Metals Co.  ............................................      239,841
                                                                              --------------
                                                                                  1,268,591
                                                                              --------------
             Auto Parts -After Market (0.5%)
     4,108   Cooper Tire & Rubber Co.  .......................................       94,741
     5,454   Dana Corp.  .....................................................      297,584
     3,288   Echlin, Inc.  ...................................................      166,249
     9,330   Genuine Parts Co.  ..............................................      345,210
     8,142   Goodyear Tire & Rubber Co.  .....................................      562,816
     6,179   ITT Industries, Inc.  ...........................................      211,631
     6,427   TRW, Inc.  ......................................................      352,280
                                                                              --------------
                                                                                  2,030,511
                                                                              --------------
             Automobiles (1.7%)
    34,588   Chrysler Corp.  .................................................    1,346,770
    62,651   Ford Motor Co.  .................................................    3,543,697
    36,926   General Motors Corp.  ...........................................    2,545,586
                                                                              --------------
                                                                                  7,436,053
                                                                              --------------
             Banks -Money Center (3.8%)
    36,206   BankAmerica Corp.  ..............................................  $ 2,805,965
     5,115   Bankers Trust New York Corp.  ...................................      604,849
    22,004   Chase Manhattan Corp.  ..........................................    2,729,871
    23,887   Citicorp  .......................................................    3,165,027
    15,188   First Chicago NBD Corp.  ........................................    1,248,264
    32,760   First Union Corp.  ..............................................    1,726,042
     9,275   Morgan (J.P.) & Co., Inc.  ......................................    1,108,362
    49,094   NationsBank Corp.  ..............................................    3,362,939
                                                                              --------------
                                                                                 16,751,319
                                                                              --------------
             Banks -Regional (4.6%)
    33,709   Banc One Corp.  .................................................    1,904,558
    19,665   Bank of New York Co., Inc.  .....................................    1,151,632
     7,598   BankBoston Corp.  ...............................................      757,426
     7,143   BB&T Corporation  ...............................................      443,312
     2,864   Cincinnati Financial Corp.  .....................................      386,282
     5,502   Comerica, Inc.  .................................................      554,670
    10,328   CoreStates Financial Corp.  .....................................      872,070
     8,041   Fifth Third Bancorp  ............................................      633,229
    14,225   Fleet Financial Group, Inc.  ....................................    1,121,108
     9,971   Huntington Bancshares, Inc.  ....................................      357,710
    11,469   KeyCorp  ........................................................      803,547
    13,292   Mellon Bank Corp.  ..............................................      828,258
     6,801   Mercantile Bancorporation, Inc.  ................................      378,306
    11,157   National City Corp.  ............................................      727,994
     5,828   Northern Trust Corp.  ...........................................      441,471
    39,434   Norwest Corp.  ..................................................    1,614,329
    15,926   PNC Bank Corp.  .................................................      883,893
     2,858   Republic New York Corp.  ........................................      345,818
     8,381   State Street Corp.  .............................................      518,051
     9,187   Summit Bancorp  .................................................      456,479
    11,009   SunTrust Banks, Inc.  ...........................................      811,914
     9,128   Synovus Financial Corp.  ........................................      320,621
    12,818   U.S. Bancorp  ...................................................    1,474,871
    10,650   Wachovia Corp.  .................................................      846,675
     4,527   Wells Fargo & Co.  ..............................................    1,457,694
                                                                              --------------
                                                                                 20,091,918
                                                                              --------------
             Beverages -Alcoholic (0.5%)
    25,579   Anheuser-Busch Companies, Inc. ..................................    1,199,016
     3,601   Brown-Forman Corp. (Class B)  ...................................      199,855
     1,933   Coors (Adolph) Co. (Class B)  ...................................       60,406
    18,610   Seagram Co. Ltd. (Canada)  ......................................      707,180
                                                                              --------------
                                                                                  2,166,457
                                                                              --------------
             Beverages -Soft Drinks (2.7%)
   129,126   Coca Cola Co.**  ................................................    8,869,342
    79,206   PepsiCo, Inc.  ..................................................    2,895,969
                                                                              --------------
                                                                                 11,765,311
                                                                              --------------

                      SEE NOTES TO FINANCIAL STATEMENTS

                               30
<PAGE>
DEAN WITTER S&P 500 INDEX FUND
PORTFOLIO OF INVESTMENTS February 28, 1998 (unaudited) continued

 NUMBER OF
   SHARES                                                                          VALUE
- ------------------------------------------------------------------------------------------------
             Biotechnology (0.1%)
    13,741   Amgen Inc.*  ....................................................  $   729,991
                                                                              --------------
             Broadcast Media (1.0%)
    36,755   CBS Corp.  ......................................................    1,137,108
     5,116   Clear Channel Communications, Inc.*  ............................      463,637
             Tele-Communications, Inc.
    26,481   (Class A)*  .....................................................      769,604
    31,693   U.S. West Media Group, Inc.*  ...................................    1,020,118
    18,418   Viacom, Inc. (Class B)*  ........................................      884,064
                                                                              --------------
                                                                                  4,274,531
                                                                              --------------
             Building Materials (0.2%)
     2,126   Armstrong World Industries Inc.  ................................      166,891
     8,610   Masco Corp.  ....................................................      468,169
     2,785   Owens-Corning ...................................................       85,987
                                                                              --------------
                                                                                    721,047
                                                                              --------------
             Chemicals (1.7%)
     5,720   Air Products & Chemicals, Inc.  .................................      480,122
    11,839   Dow Chemical Co.  ...............................................    1,083,268
    59,079   DuPont (E.I.) de Nemours & Co., Inc.  ...........................    3,622,281
     4,087   Eastman Chemical Co.  ...........................................      267,698
     3,750   Goodrich (B.F.) Co.  ............................................      185,859
     5,044   Hercules, Inc.  .................................................      243,688
     9,300   PPG Industries, Inc.  ...........................................      602,756
     8,240   Praxair, Inc.  ..................................................      393,975
     3,209   Rohm & Haas Co.  ................................................      327,117
     6,469   Union Carbide Corp.  ............................................      300,404
                                                                              --------------
                                                                                  7,507,168
                                                                              --------------
             Chemicals -Diversified (0.4%)
     7,533   Engelhard Corp.  ................................................      136,536
     1,936   FMC Corp.*  .....................................................      140,118
    30,959   Monsanto Co.  ...................................................    1,575,039
                                                                              --------------
                                                                                  1,851,693
                                                                              --------------
             Chemicals -Specialty (0.3%)
     3,876   Grace (W. R.) & Co.  ............................................      325,342
     3,123   Great Lakes Chemical Corp.  .....................................      151,856
     5,701   International Flavors & Fragrances, Inc.  .......................      262,246
     6,946   Morton International, Inc.  .....................................      229,652
     3,485   Nalco Chemical Co.  .............................................      140,271
     5,232   Sigma-Aldrich Corp.  ............................................      206,664
                                                                              --------------
                                                                                  1,316,031
                                                                              --------------
             Commercial & Consumer Services (0.7%)
     5,432   Block (H.&R.), Inc.  ............................................  $   255,643
    41,270   Cendant Corp.*  .................................................    1,547,625
     8,893   Dun & Bradstreet Corp.  .........................................      297,915
    17,150   Laidlaw, Inc. (Canada) ..........................................      251,891
    13,128   Service Corp. International  ....................................      497,223
                                                                              --------------
                                                                                  2,850,297
                                                                              --------------
             Communications Equipment (1.0%)
     4,706   Andrew Corp.*  ..................................................      130,003
     4,158   Harris Corp.  ...................................................      210,759
    31,166   Motorola, Inc.  .................................................    1,737,504
    27,358   Northern Telecom Ltd. (Canada) ..................................    1,458,523
     4,058   Scientific-Atlanta, Inc.  .......................................       71,015
     9,452   Tellabs, Inc.*  .................................................      570,664
                                                                              --------------
                                                                                  4,178,468
                                                                              --------------
             Computer -Networking (1.0%)
    18,062   3Com Corp.*  ....................................................      645,716
    11,047   Bay Networks, Inc.*  ............................................      374,217
     8,229   Cabletron Systems, Inc.*  .......................................      127,549
    52,531   Cisco Systems, Inc.*  ...........................................    3,460,480
                                                                              --------------
                                                                                  4,607,962
                                                                              --------------
             Computer Software & Services (3.5%)
     3,804   Adobe Systems, Inc.  ............................................      168,089
     2,504   Autodesk, Inc.  .................................................      118,627
    28,543   Computer Associates International, Inc.  ........................    1,345,089
     4,032   Computer Sciences Corp.*  .......................................      422,100
    11,033   HBO & Co.  ......................................................      597,161
   126,001   Microsoft Corp.*_**  ............................................   10,678,585
    18,218   Novell, Inc.*  ..................................................      191,289
    51,192   Oracle Corp.*  ..................................................    1,260,603
     6,648   Parametric Technology Corp.*  ...................................      402,204
     1,300   Shared Medical Systems Corp.  ...................................       99,369
                                                                              --------------
                                                                                 15,283,116
                                                                              --------------
             Computers -Peripheral Equipment (0.3%)
    25,893   EMC Corp.*  .....................................................      990,407
    12,760   Seagate Technology, Inc.*  ......................................      310,227
                                                                              --------------
                                                                                  1,300,634
                                                                              --------------
             Computers -Systems (2.7%)
     6,644   Apple Computer, Inc.*  ..........................................      156,964
    79,046   COMPAQ Computer Corp.  ..........................................    2,534,412
     2,495   Data General Corp.*  ............................................       51,459
    17,043   Dell Computer Corp.*  ...........................................    2,382,824

                      SEE NOTES TO FINANCIAL STATEMENTS

                               31
<PAGE>
DEAN WITTER S&P 500 INDEX FUND
PORTFOLIO OF INVESTMENTS February 28, 1998 (unaudited) continued

 NUMBER OF
   SHARES                                                                          VALUE
- ------------------------------------------------------------------------------------------------
     7,717   Digital Equipment Corp.*  .......................................  $   439,387
    50,757   International Business Machines Corp.**  ........................    5,300,934
    19,559   Sun Microsystems, Inc.*  ........................................      931,497
                                                                              --------------
                                                                                 11,797,477
                                                                              --------------
             Consumer -Noncyclical (0.0%)
             American Greetings Corp.
     3,843   (Class A)  ......................................................      175,337
     2,040   Jostens, Inc.  ..................................................       47,940
                                                                              --------------
                                                                                    223,277
                                                                              --------------
             Containers -Metal & Glass (0.1%)
     1,574   Ball Corp.  .....................................................       51,352
     6,696   Crown Cork & Seal Co., Inc.  ....................................      361,584
     7,322   Owens-Illinois, Inc.*  ..........................................      280,982
                                                                              --------------
                                                                                    693,918
                                                                              --------------
             Containers -Paper (0.1%)
     2,767   Bemis Company, Inc.  ............................................      124,688
     5,181   Stone Container Corp.  ..........................................       58,286
     2,970   Temple-Inland, Inc.  ............................................      177,086
     3,622   Union Camp Corp.  ...............................................      216,414
                                                                              --------------
                                                                                    576,474
                                                                              --------------
             Data Processing (0.5%)
    15,275   Automatic Data Processing, Inc. .................................      932,730
     3,985   Ceridian Corp.*  ................................................      185,552
     7,867   Equifax, Inc.  ..................................................      282,720
    22,347   First Data Corp.  ...............................................      759,798
                                                                              --------------
                                                                                  2,160,800
                                                                              --------------
             Distributors -Food & Health (0.2%)
     5,709   Cardinal Health, Inc.  ..........................................      467,424
     3,158   Supervalu, Inc.  ................................................      150,400
     8,930   Sysco Corp.  ....................................................      420,268
                                                                              --------------
                                                                                  1,038,092
                                                                              --------------
             Electrical Equipment (3.9%)
    11,465   AMP, Inc.  ......................................................      506,610
    23,138   Emerson Electric Co.  ...........................................    1,476,494
   170,868   General Electric Co.**  .........................................   13,284,987
     2,619   General Signal Corp.  ...........................................      106,397
     6,651   Honeywell, Inc.  ................................................      527,092
     4,489   Raychem Corp.  ..................................................      194,991
    10,896   Rockwell International Corp.  ...................................      659,208
     2,868   Thomas & Betts Corp.  ...........................................      162,580
                                                                              --------------
                                                                                 16,918,359
                                                                              --------------
             Electronic Components (0.0%)
     2,593   Grainger (W.W.), Inc.  ..........................................  $   251,035
     9,775   Silicon Graphics, Inc.*  ........................................      147,236
                                                                              --------------
                                                                                    398,271
                                                                              --------------
             Electronics -Defense (0.2%)
    17,694   Raytheon Co. (Class B)  .........................................    1,040,628
                                                                              --------------
             Electronics -Instrumentation (0.9%)
     2,382   EG & G, Inc.  ...................................................       64,165
    54,273   Hewlett-Packard Co.  ............................................    3,636,291
     2,509   Perkin-Elmer Corp.  .............................................      183,627
     2,618   Tektronix, Inc.  ................................................      116,828
                                                                              --------------
                                                                                  4,000,911
                                                                              --------------
             Electronics -Semiconductors (2.2%)
     7,361   Advanced Micro Devices, Inc.*  ..................................      172,523
    85,413   Intel Corp.**  ..................................................    7,655,140
     7,402   LSI Logic Corp.*  ...............................................      175,335
    10,999   Micron Technology, Inc.*  .......................................      365,029
     8,523   National Semiconductor Corp.*  ..................................      203,487
    20,374   Texas Instruments, Inc.  ........................................    1,179,145
                                                                              --------------
                                                                                  9,750,659
                                                                              --------------
             Engineering & Construction (0.0%)
     4,378   Fluor Corp.  ....................................................      206,040
     2,122   Foster Wheeler Corp.  ...........................................       56,763
     2,902   McDermott International, Inc.  ..................................      114,266
                                                                              --------------
                                                                                    377,069
                                                                              --------------
             Entertainment (0.9%)
     3,836   King World Productions Inc.*  ...................................      102,373
    35,226   Walt Disney Co.  ................................................    3,943,110
                                                                              --------------
                                                                                  4,045,483
                                                                              --------------
             Facilities & Environmental Services (0.0%)
     3,043   Safety-Kleen Corp.  .............................................       81,590
                                                                              --------------
             Finance -Consumer (0.6%)
     2,773   Beneficial Corp.  ...............................................      327,214
     5,635   Countrywide Credit Industries, Inc.  ............................      250,405
     7,090   Green Tree Financial Corp.  .....................................      162,627
     5,575   Household International, Inc.  ..................................      724,053
    26,149   MBNA Corp.  .....................................................      936,461
     4,967   Providian Financial Corp.  ......................................      281,877
                                                                              --------------
                                                                                  2,682,637
                                                                              --------------
             Finance -Diversified (2.8%)
    24,265   American Express Co.  ...........................................    2,185,367
    12,718   American General Corp.  .........................................      739,234

                      SEE NOTES TO FINANCIAL STATEMENTS

                               32
<PAGE>
DEAN WITTER S&P 500 INDEX FUND
PORTFOLIO OF INVESTMENTS February 28, 1998 (unaudited) continued

 NUMBER OF
   SHARES                                                                          VALUE
- ------------------------------------------------------------------------------------------------
   55,357    Fannie Mae  .....................................................  $ 3,532,469
   36,260    Freddie Mac  ....................................................    1,713,285
    6,155    Hartford Financial Services Group Inc.  .........................      604,729
    5,320    Lehman Brothers Holdings, Inc. ..................................      335,492
    5,957    MGIC Investment Corp.  ..........................................      438,956
   30,930    Morgan Stanley, Dean Witter, Discover & Co. (Note 4)  ...........    2,155,434
   10,178    SunAmerica, Inc.  ...............................................      461,191
                                                                              --------------
                                                                                 12,166,157
                                                                              --------------
             Foods (2.0%)
    7,495    Bestfoods  ......................................................      789,786
   23,888    Campbell Soup Co.  ..............................................    1,386,997
   24,664    ConAgra, Inc.  ..................................................      739,920
    8,262    General Mills, Inc.  ............................................      594,348
   19,171    Heinz (H.J.) Co.  ...............................................    1,079,567
    7,453    Hershey Foods Corp.  ............................................      497,022
   21,454    Kellogg Co.  ....................................................      914,477
    7,230    Quaker Oats Company (The)  ......................................      389,516
    5,560    Ralston-Ralston Purina Group  ...................................      563,992
   25,057    Sara Lee Corp.  .................................................    1,415,720
    6,063    Wrigley (WM.) Jr. Co. (Class A)  ................................      463,062
                                                                              --------------
                                                                                  8,834,407
                                                                              --------------
             Footwear (0.2%)
   15,164    Nike, Inc. (Class B)  ...........................................      665,320
    2,934    Reebok International Ltd. (United Kingdom)  .....................       91,504
                                                                              --------------
                                                                                    756,824
                                                                              --------------
             Gaming, Lottery, & Pari-mutuel Companies (0.0%)
    5,266    Harrah's Entertainment, Inc.*  ..................................      110,915
    9,335    Mirage Resorts, Inc.*  ..........................................      213,538
                                                                              --------------
                                                                                    324,453
                                                                              --------------
             Gold & Precious Metals Mining (0.2%)
   19,447    Barrick Gold Corp. (Canada)  ....................................      375,570
   11,986    Battle Mountain Gold Co.  .......................................       71,916
    7,655    Homestake Mining Co.  ...........................................       76,550
    8,156    Newmont Mining Corp.  ...........................................      236,014
   12,497    Placer Dome Inc. (Canada)  ......................................      160,899
                                                                              --------------
                                                                                    920,949
                                                                              --------------
             Hardware & Tools (0.1%)
    4,930    Black & Decker Corp.  ...........................................      248,349
    3,189    Snap-On, Inc.  ..................................................      135,532
    4,647    Stanley Works  ..................................................      222,185
                                                                              --------------
                                                                                    606,066
                                                                              --------------
             Healthcare -Diversified (4.4%)
   39,933    Abbott Laboratories  ............................................  $ 2,987,488
    3,387    Allergan, Inc.  .................................................      118,545
   33,918    American Home Products Corp. ....................................    3,179,813
   51,910    Bristol-Myers Squibb Co.  .......................................    5,200,733
   70,214    Johnson & Johnson  ..............................................    5,301,157
    3,823    Mallinckrodt Group, Inc.  .......................................      148,380
   14,218    Warner-Lambert Co.  .............................................    2,079,383
                                                                              --------------
                                                                                 19,015,499
                                                                              --------------
             Healthcare -Drugs (5.0%)
   57,917    Lilly (Eli) & Co.  ..............................................    3,811,663
   62,560    Merck & Co., Inc.**  ............................................    7,980,310
   67,521    Pfizer, Inc.  ...................................................    5,975,609
   26,484    Pharmacia & Upjohn, Inc.  .......................................    1,047,773
   38,222    Schering-Plough Corp.  ..........................................    2,907,261
                                                                              --------------
                                                                                 21,722,616
                                                                              --------------
             Healthcare -HMOs (0.2%)
    8,543    Humana, Inc.*  ..................................................      217,313
    9,833    United Healthcare Corp.  ........................................      596,740
                                                                              --------------
                                                                                    814,053
                                                                              --------------
             Healthcare -Long Term (0.2%)
   20,551    Healthsouth Corp.*  .............................................      554,877
    3,320    Manor Care, Inc.  ...............................................      124,708
                                                                              --------------
                                                                                    679,585
                                                                              --------------
             Healthcare -Specialized Services (0.0%)
    4,439    ALZA Corp. (Class A)*  ..........................................      165,908
                                                                              --------------
             Heavy Duty Trucks & Parts (0.1%)
    1,994    Cummins Engine Co., Inc.  .......................................      115,403
    3,932    Navistar International Corp.*  ..................................      119,435
    4,060    PACCAR, Inc.  ...................................................      256,288
                                                                              --------------
                                                                                    491,126
                                                                              --------------
             Home Building (0.0%)
    1,522    Centex Corp.  ...................................................      111,201
    1,875    Fleetwood Enterprises, Inc.  ....................................       87,891
    2,029    Kaufman & Broad Home Corp.  .....................................       52,500
    1,106    Pulte Corp.  ....................................................       50,323
                                                                              --------------
                                                                                    301,915
                                                                              --------------
             Hospital Management (0.3%)
   33,809    Columbia/HCA Healthcare Corp. ...................................      917,069
   15,937    Tenet Healthcare Corp.*  ........................................      594,649
                                                                              --------------
                                                                                  1,511,718
 
                      SEE NOTES TO FINANCIAL STATEMENTS

                               33
<PAGE>
DEAN WITTER S&P 500 INDEX FUND
PORTFOLIO OF INVESTMENTS February 28, 1998 (unaudited) continued

 NUMBER OF
   SHARES                                                                          VALUE
- ------------------------------------------------------------------------------------------------
             Household Furnishings & Appliances (0.1%)
    4,958    Maytag Corp.  ..................................................  $    223,110
    3,893    Whirlpool Corp.  ................................................      260,101
                                                                              --------------
                                                                                    483,211
                                                                              --------------
             Household Products -Non-durable (2.7%)
    5,392    Clorox Co.  .....................................................      473,148
   15,437    Colgate-Palmolive Co.  ..........................................    1,253,291
   10,903    Fort James Corp.  ...............................................      494,724
   28,671    Kimberly-Clark Corp.  ...........................................    1,596,616
   70,169    Procter & Gamble Co.  ...........................................    5,959,979
   33,404    Unilever N.V. & PLC (Netherlands) ...............................    2,148,295
                                                                              --------------
                                                                                 11,926,053
                                                                              --------------
             Housewares (0.2%)
    8,942    Fortune Brands, Inc.  ...........................................      354,886
    8,302    Newell Co.  .....................................................      380,854
    7,819    Rubbermaid, Inc.  ...............................................      226,751
    3,193    Tupperware Corp.  ...............................................       85,812
                                                                              --------------
                                                                                  1,048,303
                                                                              --------------
             Insurance Brokers (0.4%)
    8,729    AON Corp.  ......................................................      522,103
    8,868    Marsh & McLennan Co., Inc.  .....................................      768,745
    5,111    MBIA Inc.  ......................................................      374,061
                                                                              --------------
                                                                                  1,664,909
                                                                              --------------
             Investment Banking/Brokerage (0.4%)
   17,392    Merrill Lynch & Co., Inc.  ......................................    1,244,615
   13,866    Schwab (Charles) Corp.  .........................................      523,441
                                                                              --------------
                                                                                  1,768,056
                                                                              --------------
             Leisure Time -Products (0.2%)
    5,185    Brunswick Corp.  ................................................      164,624
    6,619    Hasbro, Inc.  ...................................................      240,352
   15,157    Mattel, Inc.  ...................................................      641,331
                                                                              --------------
                                                                                  1,046,307
                                                                              --------------
             Life & Health Insurance (0.6%)
    7,757    Aetna Inc.  .....................................................      677,768
    9,808    Conseco, Inc.  ..................................................      460,363
    3,694    Jefferson-Pilot Corp.  ..........................................      309,834
    7,310    Torchmark Corp.  ................................................      340,372
    3,299    Transamerica Corp.  .............................................      384,127
    7,271    UNUM Corp.  .....................................................      374,002
                                                                              --------------
                                                                                  2,546,466
                                                                              --------------
             Lodging -Hotels (0.2%)
   13,048    Hilton Hotels Corp.  ............................................      388,994
    6,643    Marriot International, Inc.  ....................................      503,207
                                                                              --------------
                                                                                    892,201
                                                                              --------------
             Machinery -Diversified (0.8%)
    3,895    Case Corp.  ....................................................  $    253,418
   19,436    Caterpillar Inc.  ...............................................    1,061,692
    2,080    Cincinnati Milacron, Inc.  ......................................       64,220
    6,319    Cooper Industries, Inc.  ........................................      354,654
   13,154    Deere & Co.  ....................................................      738,268
   11,603    Dover Corp.  ....................................................      448,166
    2,577    Harnischfeger Industries, Inc.  .................................       91,161
    8,654    Ingersoll-Rand Co.  .............................................      412,147
      424    NACCO Industries, Inc. (Class A) ................................       55,147
    3,284    Timken Co.  .....................................................      105,909
                                                                              --------------
                                                                                  3,584,782
                                                                              --------------
             Manufacturing -Diversified (2.2%)
    1,468    Aeroquip-Vickers, Inc.  .........................................       85,236
   29,452    AlliedSignal, Inc.  .............................................    1,253,551
   12,044    Corning, Inc.  ..................................................      489,288
    2,394    Crane Co.  ......................................................      117,306
    4,030    Eaton Corp.  ....................................................      387,132
   13,014    Illinois Tool Works Inc.  .......................................      780,027
    4,371    Johnson Controls, Inc.  .........................................      242,864
   21,337    Minnesota Mining & Manufacturing Co.  ...........................    1,820,313
    2,255    National Service Industries, Inc. ...............................      125,012
    8,883    Tenneco, Inc.  ..................................................      365,313
    8,599    Textron Inc.  ...................................................      644,388
    7,901    Thermo Electron Corp.*  .........................................      323,941
   27,800    Tyco International Ltd.  ........................................    1,410,850
   12,164    United Technologies Corp.  ......................................    1,086,397
    9,594    UST, Inc.  ......................................................      339,987
                                                                              --------------
                                                                                  9,471,605
                                                                              --------------
             Manufacturing -Specialized (0.2%)
    5,375    Avery Dennison Corp.  ...........................................      271,438
    1,315    Briggs & Stratton Corp.  ........................................       58,271
    2,273    Millipore Corp.  ................................................       85,948
    6,641    Pall Corp.  .....................................................      139,046
    5,825    Parker-Hannifin Corp.  ..........................................      271,591
                                                                              --------------
                                                                                    826,294
                                                                              --------------
             Medical Products & Supplies (1.0%)
    2,992    Bard (C.R.), Inc.  ..............................................      104,346
    2,890    Bausch & Lomb, Inc.  ............................................      129,508
   14,621    Baxter International, Inc.  .....................................      827,914
    6,376    Becton, Dickinson & Co.  ........................................      405,673
    5,806    Biomet, Inc.  ...................................................      173,091
   10,135    Boston Scientific Corp.*  .......................................      605,566
    7,732    Guidant Corp.  ..................................................      563,953
                               


                      SEE NOTES TO FINANCIAL STATEMENTS

                               34
<PAGE>

DEAN WITTER S&P 500 INDEX FUND
PORTFOLIO OF INVESTMENTS February 28, 1998 (unaudited) continued

 NUMBER OF
   SHARES                                                                          VALUE
- ------------------------------------------------------------------------------------------------
    24,487   Medtronic, Inc.  ................................................  $ 1,300,872
     4,792   St. Jude Medical, Inc.*  ........................................      174,908
     3,953   United States Surgical Corp.  ...................................      121,061
                                                                              --------------
                                                                                  4,406,892
                                                                              --------------
             Metals & Mining (0.1%)
     2,106   ASARCO, Inc.  ...................................................       46,595
     4,875   Cyprus Amax Minerals Co.  .......................................       79,828
    10,098   Freeport-McMoran Copper & Gold, Inc. (Class B)  .................      152,101
     8,711   Inco Ltd. (Canada)  .............................................      154,076
     3,067   Phelps Dodge Corp.  .............................................      194,755
                                                                              --------------
                                                                                    627,355
                                                                              --------------
             Multi-line Insurance (2.2%)
    36,625   American International Group, Inc.  .............................    4,401,867
     3,862   CIGNA Corp.  ....................................................      737,642
     5,322   Lincoln National Corp.  .........................................      445,718
     6,001   Loews Corp.  ....................................................      601,975
    59,868   Travelers Group, Inc.  ..........................................    3,337,641
                                                                              --------------
                                                                                  9,524,843
                                                                              --------------
             Office Equipment & Supplies (0.2%)
     4,629   Moore Corp. Ltd. (Canada)  ......................................       72,617
    15,070   Pitney Bowes, Inc.  .............................................      706,406
     9,134   Unisys Corp.*  ..................................................      163,270
                                                                              --------------
                                                                                    942,293
                                                                              --------------
             Oil & Gas -Exploration & Production (0.2%)
     8,156   Burlington Northern Santa Fe Corp.  .............................      812,542
                                                                              --------------
             Oil & Gas -Refining & Marketing (0.0%)
     3,899   Ashland, Inc.  ..................................................      217,126
                                                                              --------------
             Oil & Gas Drilling (0.8%)
     8,805   Baker Hughes, Inc.  .............................................      360,455
     9,137   Dresser Industries, Inc.  .......................................      408,310
    13,678   Halliburton Co.  ................................................      636,027
     2,604   Helmerich & Payne, Inc.  ........................................       75,353
     4,516   Rowan Companies, Inc.*  .........................................      127,295
    25,828   Schlumberger Ltd.  ..............................................    1,946,786
     2,819   Western Atlas, Inc.*  ...........................................      214,068
                                                                              --------------
                                                                                  3,768,294
                                                                              --------------
             Oil -Exploration & Production (0.2%)
     3,116   Anardarko Petroleum Corp.*  .....................................      200,982
     4,737   Apache Corp.*  ..................................................      161,058
     9,204   Burlington Resources, Inc.  ....................................  $    411,879
     5,502   Oryx Energy Co.*  ...............................................      139,957
                                                                              --------------
                                                                                    913,876
                                                                              --------------
             Oil -Integrated -Domestic (1.0%)
     4,787   Amerada Hess Corp.  .............................................      283,929
    16,737   Atlantic Richfield Co.  .........................................    1,301,302
     2,487   Kerr-McGee Corp.  ...............................................      168,183
    17,687   Occidental Petroleum Corp.  .....................................      452,124
     2,466   Pennzoil Co.  ...................................................      165,068
    13,741   Phillips Petroleum Co.  .........................................      673,309
     3,774   Sun Co., Inc.  ..................................................      150,724
    13,241   Union Pacific Resources Group, Inc.  ............................      296,267
    12,880   Unocal Corp.  ...................................................      485,415
    15,032   USX-Marathon Group  .............................................      519,544
                                                                              --------------
                                                                                  4,495,865
                                                                              --------------
             Oil -Integrated -International (5.4%)
    25,423   Amoco Corp.  ....................................................    2,160,955
    34,288   Chevron Corp.  ..................................................    2,781,614
   128,744   Exxon Corp.**  ..................................................    8,223,523
    40,988   Mobil Corp.  ....................................................    2,969,068
   111,878   Royal Dutch Petroleum Co. (ADR)(Netherlands)**  .................    6,076,374
    28,613   Texaco, Inc.  ...................................................    1,596,963
                                                                              --------------
                                                                                 23,808,497
                                                                              --------------
             Paper & Forest Products (0.6%)
     2,907   Boise Cascade Corp.  ............................................       96,839
     5,007   Champion International Corp.  ...................................      255,670
     4,835   Georgia-Pacific Corp.  ..........................................      283,754
    15,777   International Paper Co.  ........................................      735,603
     5,704   Louisiana-Pacific Corp.  ........................................      125,132
     5,459   Mead Corp.  .....................................................      186,630
     1,507   Potlatch Corp.  .................................................       65,272
     5,322   Westvaco Corp.  .................................................      172,965
    10,406   Weyerhaeuser Co.  ...............................................      519,650
     5,797   Willamette Industries, Inc.  ....................................      214,127
                                                                              --------------
                                                                                  2,655,642
                                                                              --------------
             Personal Care (0.8%)
     2,929   Alberto-Culver Co. (Class B)  ...................................       89,151
     6,903   Avon Products, Inc.  ............................................      486,230
    29,241   Gillette Co.  ...................................................    3,154,373
                                                                              --------------
                                                                                  3,729,754
                                                                              --------------
             Photography/Imaging (0.6%)
    16,992   Eastman Kodak Co.  ..............................................    1,115,100
     6,931   Ikon Office Solutions, Inc.  ....................................      226,557

                      SEE NOTES TO FINANCIAL STATEMENTS

                               35

<PAGE>

DEAN WITTER S&P 500 INDEX FUND
PORTFOLIO OF INVESTMENTS February 28, 1998 (unaudited) continued

 NUMBER OF
   SHARES                                                                          VALUE
- ------------------------------------------------------------------------------------------------
     2,370   Polaroid Corp. .................................................. $   108,576
    17,016   Xerox Corp.  ....................................................   1,509,107
                                                                              --------------
                                                                                 2,959,340
                                                                              --------------
             Property -Casualty Insurance (1.1%)
    22,388   Allstate Corp.  .................................................   2,087,681
     8,885   Chubb Corp.  ....................................................     709,134
     4,095   General Re Corp.  ...............................................     872,235
     3,764   Progressive Corp.  ..............................................     436,154
     7,369   SAFECO Corp.  ...................................................     385,951
     4,376   St. Paul Companies, Inc.  .......................................     387,823
     5,882   USF&G Corp.  ....................................................     143,741
                                                                              --------------
                                                                                 5,022,719
                                                                              --------------
             Publishing (0.7%)
     5,009   Dow Jones & Co., Inc.  ..........................................     257,337
     5,161   McGraw-Hill, Inc.  ..............................................     390,301
     2,789   Meredith Corp.  .................................................     119,753
    29,208   Time Warner, Inc.  ..............................................   1,971,540
     4,618   Times Mirror Co. (Class A)  .....................................     284,296
                                                                              --------------
                                                                                 3,023,227
                                                                              --------------
             Publishing -Newspaper (0.4%)
    14,791   Gannett Co., Inc.  ..............................................     954,944
     4,408   Knight-Ridder Newspapers, Inc. ..................................     247,950
     5,004   New York Times Co. (Class A)  ...................................     327,449
     6,407   Tribune Co.  ....................................................     413,652
                                                                              --------------
                                                                                 1,943,995
                                                                              --------------
             Railroads (0.4%)
    11,370   CSX Corp.  ......................................................     636,009
    19,668   Norfolk Southern Corp.  .........................................     677,317
    12,892   Union Pacific Corp.  ............................................     657,492
                                                                              --------------
                                                                                 1,970,818
                                                                              --------------
             Restaurants (0.5%)
     7,979   Darden Restaurants, Inc.  .......................................     107,717
    35,895   McDonald's Corp.  ...............................................   1,965,251
     7,923   TRICON Global Restaurants, Inc.*  ...............................     224,815
     6,877   Wendy's International, Inc.  ....................................     149,145
                                                                              --------------
                                                                                 2,446,928
                                                                              --------------
             Retail -Building Supplies (0.7%)
    38,194   Home Depot, Inc.  ...............................................   2,437,255
     9,113   Lowe's Companies, Inc.  .........................................     532,541
     9,009   Sherwin-Williams Co.  ...........................................     301,238
                                                                              --------------
                                                                                 3,271,034
                                                                              --------------
             Retail -Computers & Electronics (0.1%)
     5,142   Circuit City Stores, Inc.  ......................................     198,610
     5,397   Tandy Corp.  ....................................................     240,167
                                                                              --------------
                                                                                   438,777
                                                                              --------------
             Retail -Department Stores (0.6%)
     5,815   Dillard Department Stores, Inc. (Class A)  ......................  $  207,159
    10,917   Federated Department Stores, Inc.*  .............................     511,734
     3,691   Harcourt General, Inc.  .........................................     199,314
    12,075   May Department Stores Co.  ......................................     733,556
     1,918   Mercantile Stores Co., Inc.  ....................................     126,228
     4,031   Nordstrom, Inc.  ................................................     230,775
    13,049   Penney (J.C.) Co., Inc.  ........................................     922,401
                                                                              --------------
                                                                                 2,931,167
                                                                              --------------
             Retail -Drug Stores (0.5%)
     8,977   CVS Corp.  ......................................................     664,859
     2,040   Longs Drug Stores Corp.  ........................................      64,643
    13,021   Rite Aid Corp.  .................................................     421,555
    25,683   Walgreen Co.  ...................................................     942,245
                                                                              --------------
                                                                                 2,093,302
                                                                              --------------
             Retail -Food Chains (0.5%)
    12,820   Albertson's, Inc.  ..............................................     600,136
    14,214   American Stores Co.  ............................................     358,015
     3,130   Giant Food, Inc. (Class A)  .....................................     113,658
     1,995   Great Atlantic & Pacific Tea Co., Inc.  .........................      60,723
    13,278   Kroger Co.*  ....................................................     560,996
     7,768   Winn-Dixie Stores, Inc.  ........................................     418,987
                                                                              --------------
                                                                                 2,112,515
                                                                              --------------
             Retail -General Merchandise (2.0%)
     5,601   Consolidated Stores Corp.*  .....................................     230,341
    11,089   Costco Companies, Inc.*  ........................................     541,975
    11,359   Dayton-Hudson Corp.  ............................................     878,193
    25,411   Kmart Corp.*  ...................................................     339,872
    20,437   Sears, Roebuck & Co.  ...........................................   1,084,438
   117,651   Wal-Mart Stores, Inc.  ..........................................   5,448,712
                                                                              --------------
                                                                                 8,523,531
                                                                              --------------
             Retail -Specialty (0.2%)
     7,882   AutoZone, Inc.*  ................................................     238,431
     3,302   Pep Boys-Manny, Moe & Jack  .....................................      84,614
    14,888   Toys 'R' Us, Inc.*  .............................................     390,810
     7,039   Woolworth Corp.*  ...............................................     167,176
                                                                              --------------
                                                                                   881,031
                                                                              --------------
             Retail -Specialty Apparel (0.4%)
     5,519   Charming Shoppes, Inc.*  ........................................      24,491
    20,982   Gap, Inc. (The)  ................................................     937,633
    14,172   Limited (The), Inc.  ............................................     410,988
    8,520    TJX Companies, Inc.  ............................................     329,085
                                                                              --------------
                                                                                 1,702,197
                                                                              --------------

                      SEE NOTES TO FINANCIAL STATEMENTS

                               36
<PAGE>

DEAN WITTER S&P 500 INDEX FUND
PORTFOLIO OF INVESTMENTS February 28, 1998 (unaudited) continued

 NUMBER OF
   SHARES                                                                          VALUE
- ------------------------------------------------------------------------------------------------
             Savings & Loan Companies (0.3%)
     5,714   Ahmanson (H.F.) & Co.  ..........................................  $   356,768
     2,959   Golden West Financial Corp.  ....................................      264,091
    13,434   Washington Mutual, Inc.  ........................................      900,918
                                                                              --------------
                                                                                  1,521,777
                                                                              --------------
             Semiconductor Equipment (0.2%)
    19,023   Applied Materials, Inc.*  .......................................      700,284
     4,417   KLA-Tencor Corp.*  ..............................................      203,734
                                                                              --------------
                                                                                    904,018
                                                                              --------------
             Specialty Printing (0.1%)
     4,289   Deluxe Corp.  ...................................................      146,094
     7,629   Donnelley (R.R.) & Sons Co.  ....................................      302,299
     6,753   Ecolab, Inc.  ...................................................      194,571
     1,617   Harland (John H.) Co.  ..........................................       24,558
                                                                              --------------
                                                                                    667,522
                                                                              --------------
             Steel & Iron (2.0%)
     9,099   Allegheny Teledyne Inc.  ........................................      246,810
     5,596   Armco, Inc.  ....................................................       29,729
     5,876   Bethlehem Steel Corp.*  .........................................       62,433
     2,549   Inland Steel Industries, Inc.  ..................................       52,573
     4,584   Nucor Corp.  ....................................................      236,076
     4,476   USX-U.S. Steel Group, Inc.  .....................................      157,220
     5,048   Worthington Industries, Inc.  ...................................       86,447
                                                                              --------------
                                                                                    871,288
                                                                              --------------
             Telecommunications -Cellular/Wireless (0.3%)
    26,352   Airtouch Communications, Inc.* ..................................    1,184,193
     6,132   DSC Communications Corp.*  ......................................      120,341
     7,693   General Instrument Corp.  .......................................      128,377
                                                                              --------------
                                                                                  1,432,911
                                                                              --------------
             Telecommunications -Long Distance (2.3%)
    84,801   AT&T Corp.  .....................................................    5,162,261
    36,364   MCI Communications Corp.  .......................................    1,738,654
    22,452   Sprint Corp.  ...................................................    1,481,832
    52,872   WorldCom, Inc.*  ................................................    2,019,050
                                                                              --------------
                                                                                 10,401,797
                                                                              --------------
             Telephones (5.0%)
     9,676   Alltel Corp.  ...................................................      442,072
    57,143   Ameritech Corp.  ................................................    2,382,149
    40,548   Bell Atlantic Corp.  ............................................    3,639,183
    51,771   BellSouth Corp.  ................................................    3,158,031
    18,200   Comcast Corp. (Class A Special) .................................      637,000
     8,564   Frontier Corp.  .................................................      237,116
    49,993   GTE Corp.  ......................................................    2,705,871
    33,479   Lucent Technologies Inc.  .......................................    3,628,287
    47,856   SBC Communications, Inc.  .......................................    3,619,110
    25,224   U.S. West Communications Group  .................................  $ 1,313,225
                                                                              --------------
                                                                                 21,762,044
                                                                              --------------
             Textiles -Apparel (0.1%)
     3,822   Fruit of the Loom, Inc. (Class A)* ..............................      122,782
     3,491   Liz Claiborne, Inc.  ............................................      174,550
     1,899   Russell Corp.  ..................................................       51,510
     6,380   VF Corp.  .......................................................      304,246
                                                                              --------------
                                                                                    653,088
                                                                              --------------
             Textiles -Home Furnishings (0.0%)
             Springs Industries, Inc.
     1,051   (Class A)  ......................................................       58,790
                                                                              --------------
             Tobacco (1.2%)
   126,577   Philip Morris Companies, Inc.  ..................................    5,498,188
                                                                              --------------
             Truckers (0.0%)
     3,995   Ryder System, Inc.  .............................................      146,567
                                                                              --------------
             Utilities -Electric (2.4%)
     7,160   Ameren Corp.  ...................................................      275,213
     9,876   American Electric Power Co., Inc.  ..............................      474,048
     7,704   Baltimore Gas & Electric Co.  ...................................      243,158
     7,887   Carolina Power & Light Co.  .....................................      329,282
    11,074   Central & South West Corp.  .....................................      296,922
     8,226   CINergy Corp.  ..................................................      286,368
    12,262   Consolidated Edison Co. of New York, Inc.  ......................      521,135
     9,760   Dominion Resources, Inc.  .......................................      389,180
     7,572   DTE Energy Co.  .................................................      278,271
    18,774   Duke Power Co.  .................................................    1,043,130
    19,917   Edison International  ...........................................      550,207
    12,734   Entergy Corp.  ..................................................      368,490
    12,016   FirstEnergy Corp.*  .............................................      347,713
     9,498   FPL Group, Inc.  ................................................      551,478
     6,621   GPU, Inc.  ......................................................      266,081
    14,884   Houston Industries, Inc.  .......................................      385,124
     7,534   Niagara Mohawk Power Corp.*  ....................................       96,529
     3,858   Northern States Power Co.  ......................................      211,949
    15,459   PacifiCorp  .....................................................      373,915
    11,610   PECO Energy Co.  ................................................      229,298
    22,877   PG & E Corp.  ...................................................      690,599
     8,624   PP&L Resources, Inc.  ...........................................      192,962
             Public Service Enterprise
    12,103   Group, Inc.  ....................................................      390,322
    36,031   Southern Co.  ...................................................      889,515

                      SEE NOTES TO FINANCIAL STATEMENTS

                               37
<PAGE>
DEAN WITTER S&P 500 INDEX FUND
PORTFOLIO OF INVESTMENTS February 28, 1998 (unaudited) continued

 NUMBER OF
   SHARES                                                                          VALUE
- ------------------------------------------------------------------------------------------------
   12,867    Texas Utilities Co.  ............................................ $    520,309
   11,286    Unicom Corp.  ...................................................      361,857
                                                                              --------------
                                                                                 10,563,055
                                                                              --------------
             Utilities -Natural Gas (0.6%)
    5,531    Coastal Corp.  ..................................................      351,910
    2,891    Columbia Gas System, Inc.  ......................................      220,619
    4,977    Consolidated Natural Gas Co.  ...................................      286,178
    1,062    Eastern Enterprises  ............................................       47,060
   16,604    Enron Corp.  ....................................................      780,388
    2,531    NICOR, Inc.  ....................................................      104,087
    1,619    ONEOK, Inc.  ....................................................       56,665
    4,347    Pacific Enterprises  ............................................      157,850
    1,831    Peoples Energy Corp.  ...........................................       66,145
    5,739    Sonat, Inc.  ....................................................      247,494
   16,687    Williams Companies, Inc.  .......................................      545,456
                                                                              --------------
                                                                                  2,863,852
                                                                              --------------
             Waste Management (0.2%)
   10,320    Browning-Ferris Industries, Inc. ................................      343,785
   23,757    Waste Management Inc.  ..........................................      593,925
                                                                              --------------
                                                                                    937,710
                                                                              --------------
             TOTAL COMMON STOCKS
             (Identified Cost $390,140,659)  .................................  428,105,597
                                                                              --------------

</TABLE>
    

   
<TABLE>
<CAPTION>
 PRINCIPAL
 AMOUNT IN
 THOUSANDS
- -----------
<S>          <C>                                                              <C>
             SHORT-TERM INVESTMENT (0.7%)
             REPURCHASE AGREEMENT
             The Bank of New York 5.4375% due 03/02/98 (dated 02/27/98;
   $2,915    proceeds $2,916,669)(a) (Identified Cost $2,915,348).............   2,915,348
                                                                              -------------
             TOTAL INVESTMENTS  .............................................. 431,020,945

</TABLE>
    

   
<TABLE>
<CAPTION>
                                         DESCRIPTION,
   NUMBER OF                            DELIVERY YEAR,
   CONTRACTS                              AND MONTH                                   VALUE
- ------------------------------------------------------------------------------------------------
               FINANCIAL FUTURES (B) (0.0%)
<S>            <C>                                                              <C>
               SHORT POSITION
       23      S&P 500 Index/March 1998 ........................................         $(8,150)
                                                                                ----------------
</TABLE>
    

   
<TABLE>
<CAPTION>
<S>                               <C>      <C>
 TOTAL INVESTMENTS
(Identified Cost $393,056,007)(c).........................................    98.9%   431,020,945
TOTAL FINANCIAL FUTURES                                                        0.0         (8,150)
CASH AND OTHER ASSETS IN EXCESS
OF LIABILITIES ...........................................................     1.1      4,916,185
                                                                            -------- -------------
NET ASSETS ...............................................................   100.0%  $435,928,980
                                                                            ======== =============
</TABLE>
    

   
- ------------
ADR     American Depository Receipt.

*       Non-income producing security.

**      Some or all of these securities are segregated in connection with
        open futures contracts.

(a)     Collateralized by $330,862 Federal Home Loan Banks 6.55% due 03/04/02
        valued at $343,209, $1,015,000 Federal Home Loan Banks 6.25% due
        10/29/01 valued at $1,039,968, $1,000,000 Federal National Mortgage
        Assoc. 7.15% due 09/15/05 valued at $1,038,943 and $530,069 Federal
        National Mortgage Assoc. 6.65% due 03/08/06 valued at $551,535.

(b)     Value represents variation margin on open futures contracts at February
        28, 1998. The market value of these futures contracts is $5,901,900 and
        the unrealized appreciation is $138,268.

(c)     The aggregate cost for federal income tax purposes approximates
        identified cost. The aggregate gross unrealized appreciation is
        $42,956,830 and the aggregate gross unrealized depreciation is
        $4,991,892, resulting in net unrealized appreciation of $37,964,938.
    

                      SEE NOTES TO FINANCIAL STATEMENTS

                               38
<PAGE>
   
DEAN WITTER S&P 500 INDEX FUND
FINANCIAL STATEMENTS
    

STATEMENT OF ASSETS AND LIABILITIES
February 28, 1998 (unaudited)

   
<TABLE>
<CAPTION>
<S>                                                        <C>
 ASSETS:
Investments in securities, at value
 (identified cost $393,056,007)...........................    $431,020,945
Cash......................................................          25,567
Receivable for:
  Shares of beneficial interest sold .....................       5,630,771
  Dividends...............................................         637,467
Deferred organizational expenses .........................          45,271
Prepaid expenses and other assets ........................             980
                                                           --------------
  TOTAL ASSETS ...........................................     437,361,001
                                                           --------------
LIABILITIES:
Payable for:
  Shares of beneficial interest repurchased...............         855,292
  Plan of distribution fee ...............................         300,567
  Investment management fee ..............................          57,587
  Variation margin on futures contracts ..................           8,150
Organizational expenses ..................................          49,500
Accrued expenses and other payables ......................         160,925
                                                           --------------
  TOTAL LIABILITIES ......................................       1,432,021
                                                           --------------
  NET ASSETS..............................................    $435,928,980
                                                           ==============
COMPOSITION OF NET ASSETS:
Paid-in-capital...........................................    $397,807,150
Net unrealized appreciation ..............................      38,103,206
Undistributed net investment income.......................         219,833
Net realized loss ........................................        (201,209)
                                                           --------------
  NET ASSETS..............................................    $435,928,980
                                                           ==============
CLASS A SHARES:
Net Assets................................................     $19,088,917
Shares Outstanding (unlimited authorized, $.01 par value)        1,716,869
  NET ASSET VALUE PER SHARE...............................    $      11.12
                                                           ==============
  MAXIMUM OFFERING PRICE PER SHARE,
   (net asset value plus 5.54% of net asset value) .......    $      11.74
                                                           ==============
CLASS B SHARES:
Net Assets................................................    $380,009,145
Shares Outstanding (unlimited authorized, $.01 par value)       34,233,805
  NET ASSET VALUE PER SHARE ..............................    $      11.10
                                                           ==============
CLASS C SHARES:
Net Assets................................................     $24,126,224
Shares Outstanding (unlimited authorized, $.01 par value)        2,173,252
  NET ASSET VALUE PER SHARE ..............................    $      11.10
                                                           ==============
CLASS D SHARES:
Net Assets................................................     $12,704,694
Shares Outstanding (unlimited authorized, $.01 par value)        1,142,033
  NET ASSET VALUE PER SHARE ..............................    $      11.12
                                                           ==============
</TABLE>
    

                      SEE NOTES TO FINANCIAL STATEMENTS

                               39
<PAGE>
DEAN WITTER S&P 500 INDEX FUND
FINANCIAL STATEMENTS, continued

   
 STATEMENT OF OPERATIONS
For the period September 26, 1997* through February 28, 1998 (unaudited)
    

   
<TABLE>
<CAPTION>
<S>                                                <C>
 NET INVESTMENT INCOME:
INCOME
Dividends (net of $3,216 foreign withholding
 tax).............................................   $ 1,967,904
Dividends from affiliate (Note 4).................         7,287
Interest .........................................       398,787
                                                   ------------
  TOTAL INCOME ...................................     2,373,978
                                                   ------------
EXPENSES
Plan of distribution fee (Class A shares)  .......        12,848
Plan of distribution fee (Class B shares)  .......     1,127,620
Plan of distribution fee (Class C shares) ........        75,709
Investment management fee.........................       510,357
Registration fees ................................       136,736
Transfer agent fees and expenses..................       117,693
Custodian fees....................................        38,277
Professional fees ................................        17,577
S&P license fees .................................        12,759
Shareholder reports and notices ..................         6,426
Trustees' fees and expenses.......................         6,145
Organizational expenses ..........................         4,229
                                                   ------------
  TOTAL EXPENSES..................................     2,066,376
Less: amounts waived/reimbursed...................      (212,252)
                                                   ------------
  NET EXPENSES ...................................     1,854,124
                                                   ------------
  NET INVESTMENT INCOME...........................       519,854
                                                   ------------
NET REALIZED AND UNREALIZED GAIN (LOSS):
Net realized gain (loss) on:
  Investments ....................................       (67,320)
  Futures contracts...............................      (133,889)
                                                   ------------
  NET LOSS........................................      (201,209)
                                                   ------------
Net unrealized appreciation on:
  Investments ....................................    37,964,938
  Futures contracts...............................       138,268
                                                   ------------
  NET GAIN........................................    38,103,206
                                                   ------------
NET INCREASE......................................   $38,421,851
                                                   ============
</TABLE>
    
   
- ------------
* Commencement of operations.
    

                      SEE NOTES TO FINANCIAL STATEMENTS
                               40
<PAGE>
DEAN WITTER S&P 500 INDEX FUND
FINANCIAL STATEMENTS, continued

STATEMENT OF CHANGES IN NET ASSETS

   
<TABLE>
<CAPTION>
                                                                    FOR THE PERIOD
                                                                 SEPTEMBER 26, 1997*
                                                                       THROUGH
                                                                  FEBRUARY 28, 1998
- ---------------------------------------------------------------  -------------------
                                                                     (UNAUDITED)
<S>                                                              <C>
INCREASE (DECREASE) IN NET ASSETS:
OPERATIONS:
Net investment income ..........................................     $    519,854
Net realized loss...............................................         (201,209)
Net unrealized appreciation.....................................       38,103,206
                                                                 -------------------
  NET INCREASE .................................................       38,421,851
                                                                 -------------------
DIVIDENDS TO SHAREHOLDERS FROM NET INVESTMENT INCOME:
Class A shares..................................................          (32,194)
Class B shares..................................................         (218,935)
Class C shares..................................................          (12,314)
Class D shares..................................................          (36,578)
                                                                 -------------------
  TOTAL DIVIDENDS  .............................................         (300,021)
                                                                 -------------------
Net increase from transactions in shares of beneficial interest       397,707,150
                                                                 -------------------
  NET INCREASE .................................................      435,828,980
NET ASSETS:
Beginning of period.............................................          100,000
                                                                 -------------------
  END OF PERIOD
  (Including undistributed net investment income of $219,833) ..     $435,928,980
                                                                 ===================
</TABLE>
    
   
- ------------
* Commencement of operations.
    

                      SEE NOTES TO FINANCIAL STATEMENTS

                               41
<PAGE>
   
DEAN WITTER S&P 500 INDEX FUND
NOTES TO FINANCIAL STATEMENTS February 28, 1998 (unaudited)
    

1. ORGANIZATION AND ACCOUNTING POLICIES

   
Dean Witter S&P 500 Index Fund (the "Fund") is registered under the Investment
Company Act of 1940, as amended (the "Act"), as a diversified, open-end
management investment company. The Fund's investment objective is to provide
investment results that, before expenses, correspond to the total return of the
Standard & Poor's 500 Composite Stock Price Index (the "S&P 500 Index"). The
Fund seeks to achieve its objective by investing at least 80% of its total
assets in common stocks included in the S&P 500 Index in approximately the same
weighting as the Index. The Fund was organized as a Massachusetts business trust
on June 18, 1997 and had no other operations other than those relating to
organizational matters and the issuance of 2,500 shares of beneficial interest
by each class for $25,000 of each class to Dean Witter InterCapital Inc. (the
"Investment Manager") to effect the Fund's initial capitalization. The Fund
commenced operations on September 26, 1997.

The Fund offers Class A shares, Class B shares, Class C shares and Class D
shares. The four classes are substantially the same except that most Class A
shares are subject to a sales charge imposed at the time of purchase, some Class
A shares, and most Class B shares and Class C shares are subject to a contingent
deferred sales charge imposed on shares redeemed within one year, six years and
one year, respectively. Class D shares are not subject to a sales charge.
Additionally, Class A shares, Class B shares and Class C shares incur
distribution expenses. 
    

The preparation of financial statements in accordance with generally accepted
accounting principles requires management to make estimates and assumptions that
affect the reported amounts and disclosures. Actual results could differ from
those estimates.

The following is a summary of significant accounting policies:

A. VALUATION OF INVESTMENTS -- (1) an equity security listed or traded on the
New York, American or other domestic or foreign stock exchange is valued at its
latest sale price on that exchange prior to the time when assets are valued; if
there were no sales that day, the security is valued at the latest bid price (in
cases where a security is traded on more than one exchange, the security is
valued on the exchange designated as the primary market pursuant to procedures
adopted by the Trustees); (2) all other portfolio securities for which
over-the-counter market quotations are readily available are valued at the
latest available bid price prior to the time of valuation; (3) when market
quotations are not readily available, including circumstances under which it is
determined by the Investment Manager that sale or bid prices are not reflective
of a security's market value, portfolio securities are valued at their fair
value as determined in good faith under procedures established by and under the
general supervision of the Trustees; and (4) short-term debt securities having a
maturity date of more than sixty days at time of

                               42
<PAGE>
DEAN WITTER S&P 500 INDEX FUND
NOTES TO FINANCIAL STATEMENTS February 28, 1998 (unaudited) continued

   
purchase are valued on a mark-to-market basis until sixty days prior to maturity
and thereafter at amortized cost based on their value on the 61st day.
Short-term debt securities having a maturity date of sixty days or less at the
time of purchase are valued at amortized cost.
    

B. ACCOUNTING FOR INVESTMENTS -- Security transactions are accounted for on the
trade date (date the order to buy or sell is executed). Realized gains and
losses on security transactions are determined by the identified cost method.
Dividend income and other distributions are recorded on the ex-dividend date.
Discounts are accreted over the respective life of the securities. Interest
income is accrued daily.

C. MULTIPLE CLASS ALLOCATIONS -- Investment income, expenses (other than
distribution fees), and realized and unrealized gains and losses are allocated
to each class of shares based upon the relative net asset value on the date such
items are recognized. Distribution fees are charged directly to the respective
class.

D. FEDERAL INCOME TAX STATUS -- It is the Fund's policy to comply with the
requirements of the Internal Revenue Code applicable to regulated investment
companies and to distribute all of its taxable income to its shareholders.
Accordingly, no federal income tax provision is required.

E. DIVIDENDS AND DISTRIBUTIONS TO SHAREHOLDERS -- The Fund records dividends and
distributions to its shareholders on the ex-dividend date. The amount of
dividends and distributions from net investment income and net realized capital
gains are determined in accordance with federal income tax regulations which may
differ from generally accepted accounting principles. These "book/tax"
differences are either considered temporary or permanent in nature. To the
extent these differences are permanent in nature, such amounts are reclassified
within the capital accounts based on their federal tax-basis treatment;
temporary differences do not require reclassification. Dividends and
distributions which exceed net investment income and net realized capital gains
for financial reporting purposes but not for tax purposes are reported as
dividends in excess of net investment income or distributions in excess of net
realized capital gains. To the extent they exceed net investment income and net
realized capital gains for tax purposes, they are reported as distributions of
paid-in-capital.

F. ORGANIZATIONAL EXPENSES -- The Investment Manager incurred the organizational
expenses of the Fund in the amount of approximately $49,500 which will be
reimbursed for the full amount thereof. Such expenses have been deferred and are
being amortized on the straight-line method over a period not to exceed five
years from the commencement of operations.

                               43
<PAGE>
DEAN WITTER S&P 500 INDEX FUND
NOTES TO FINANCIAL STATEMENTS February 28, 1998 (unaudited) continued

2. INVESTMENT MANAGEMENT AGREEMENT

Pursuant to an Investment Management Agreement, the Fund pays the Investment
Manager a management fee, accrued daily and payable monthly, by applying the
annual rate of 0.40% to the net assets of the Fund determined as of the close of
each business day.

Under the terms of the Agreement, in addition to managing the Fund's
investments, the Investment Manager maintains certain of the Fund's books and
records and furnishes, at its own expense, office space, facilities, equipment,
clerical, bookkeeping and certain legal services and pays the salaries of all
personnel, including officers of the Fund who are employees of the Investment
Manager. The Investment Manager also bears the cost of telephone services, heat,
light, power and other utilities provided to the Fund.

The Investment Manager has agreed to assume all operating expenses (except for
12b-1 fees) and to waive the compensation provided for in its Investment
Management Agreement to the extent that such expenses and compensation on an
annualized basis exceed 0.50% of the daily net assets of the Fund.

3. PLAN OF DISTRIBUTION

Shares of the Fund are distributed by Dean Witter Distributors Inc. (the
"Distributor"), an affiliate of the Investment Manager. The Fund has adopted a
Plan of Distribution (the "Plan") pursuant to Rule 12b-1 under the Act. The Plan
provides that the Fund will pay the Distributor a fee which is accrued daily and
paid monthly at the following annual rates: (i) Class A -up to 0.25% of the
average daily net assets of Class A; (ii) Class B -1.0% of the average daily net
assets of Class B; and (iii) Class C -up to 1.0% of the average daily net assets
of Class C. In the case of Class A shares, amounts paid under the Plan are paid
to the Distributor for services provided. In the case of Class B and Class C
shares, amounts paid under the Plan are paid to the Distributor for services
provided and the expenses borne by it and others in the distribution of the
shares of these Classes, including the payment of commissions for sales of these
Classes and incentive compensation to, and expenses of, the account executives
of Dean Witter Reynolds Inc. ("DWR"), an affiliate of the Investment Manager and
Distributor, and others who engage in or support distribution of the shares or
who service shareholder accounts, including overhead and telephone expenses;
printing and distribution of prospectuses and reports used in connection with
the offering of these shares to other than current shareholders; and
preparation, printing and distribution of sales literature and advertising
materials. In addition, the Distributor may utilize fees paid pursuant to the
Plan, in the case of Class B shares, to compensate DWR and other selected
broker-dealers for their opportunity costs in advancing such amounts, which
compensation would be in the form of a carrying charge on any unreimbursed
expenses.

                               44
<PAGE>
DEAN WITTER S&P 500 INDEX FUND
NOTES TO FINANCIAL STATEMENTS February 28, 1998 (unaudited) continued

   
In the case of Class B shares, provided that the Plan continues in effect, any
cumulative expenses incurred by the Distributor but not yet recovered may be
recovered through the payment of future distribution fees from the Fund pursuant
to the Plan and contingent deferred sales charges paid by investors upon
redemption of Class B shares. Although there is no legal obligation for the Fund
to pay expenses incurred in excess of payments made to the Distributor under the
Plan and the proceeds of contingent deferred sales charges paid by investors
upon redemption of shares, if for any reason the Plan is terminated, the
Trustees will consider at that time the manner in which to treat such expenses.
The Distributor has advised the Fund that such excess amounts, including
carrying charges, totaled $15,470,964 at February 28, 1998.

In the case of Class A shares and Class C shares, expenses incurred pursuant to
the Plan in any calendar year in excess of 0.25% or 1.0% of the average daily
net assets of Class A or Class C, respectively, will not be reimbursed by the
Fund through payments in any subsequent year, except that expenses representing
a gross sales credit to account executives may be reimbursed in the subsequent
calendar year. For the period ended February 28, 1998, the distribution fee was
accrued for Class A shares and Class C shares at the annual rate of 0.24% and
1.0%, respectively.

The Distributor has informed the Fund that for the period ended February 28,
1998, it received contingent deferred sales charges from certain redemptions of
the Fund's Class A shares, Class B shares and Class C shares of $1,233, $176,043
and $2,465, respectively and received $317,745 in front-end sales charges from
sales of the Fund's Class A shares. The respective shareholders pay such charges
which are not an expense of the Fund.
    

4. SECURITY TRANSACTIONS AND TRANSACTIONS WITH AFFILIATES

   
The cost of purchases and proceeds from sales of portfolio securities, excluding
short-term investments, for the period ended February 28, 1998 aggregated
$391,998,552 and $1,790,565, respectively. Included in the aforementioned are
purchases of U.S. Government securities of $4,238,575, and purchases of Morgan
Stanley, Dean Witter, Discover & Co. common stock of $1,744,549. 
    

                               45
<PAGE>
DEAN WITTER S&P 500 INDEX FUND
NOTES TO FINANCIAL STATEMENTS February 28, 1998 (unaudited) continued

5. SHARES OF BENEFICIAL INTEREST

Transactions in shares of beneficial interest were as follows:

   
<TABLE>
<CAPTION>
                                  FOR THE PERIOD
                                SEPTEMBER 26, 1997*
                                      THROUGH
                                 FEBRUARY 28, 1998
                           -----------------------------
                               SHARES         AMOUNT
                           ------------- --------------
<S>                        <C>           <C>
CLASS A
Sold......................    2,174,952    $ 22,337,813
Reinvestment of
 dividends................        2,992          30,640
Redeemed..................     (463,575)     (4,833,628)
                           ------------- --------------
Net increase -Class A ....    1,714,369      17,534,825
                           ------------- --------------
CLASS B
Sold......................   35,877,610     363,073,563
Reinvestment of
 dividends................       19,650         201,230
Redeemed..................   (1,665,955)    (17,145,091)
                           ------------- --------------
Net increase -Class B ....   34,231,305     346,129,702
                           ------------- --------------
CLASS C
Sold......................    2,361,111      23,865,804
Reinvestment of
 dividends................        1,135          11,618
Redeemed..................     (191,494)     (1,986,049)
                           ------------- --------------
Net increase -Class C ....    2,170,752      21,891,373
                           ------------- --------------
CLASS D
Sold......................    2,170,273      22,597,466
Reinvestment of
 dividends................          189           1,939
Redeemed..................   (1,030,929)    (10,448,155)
                           ------------- --------------
Net increase -Class D ....    1,139,533      12,151,250
                           ------------- --------------
Net increase in Fund .....   39,255,959    $397,707,150
                           ============= ==============
</TABLE>
    

- ------------

*     Commencement of operations.

6. FINANCIAL HIGHLIGHTS

   
See the "Financial Highlights" table on page 6 of this prospectus.
    

                                       46


<PAGE>

   
Dean Witter
S&P 500 Index Fund
Two World Trade Center
New York, New York 10048

TRUSTEES
Michael Bozic
Charles A. Fiumefreddo
Edwin J. Garn
John R. Haire
Wayne E. Hedien
Dr. Manuel H. Johnson
Michael E. Nugent
Philip J. Purcell
John L. Schroeder

OFFICERS
Charles A. Fiumefreddo
Chairman and Chief Executive Officer
Barry Fink
Vice President, Secretary and
General Counsel
Kenton J. Hinchliffe
Vice President
Thomas F. Caloia
Treasurer

CUSTODIAN T
he Bank of New York 
90 Washington Street 
New York, New York 10286

TRANSFER AGENT AND DIVIDEND DISBURSING AGENT
Morgan Stanley Dean Witter Trust FSB
Harborside Financial Center
Plaza Two
Jersey City, New Jersey 07311

INDEPENDENT ACCOUNTANTS 
Price Waterhouse LLP 
1177 Avenue of the Americas 
New York, New York 10036 

INVESTMENT MANAGER 
Dean Witter InterCapital Inc.

DEAN WITTER
S&P 500 INDEX
FUND

PROSPECTUS--MARCH 30, 1998
    


<PAGE>
   
STATEMENT OF ADDITIONAL INFORMATION 
March 31, 1998 
    

                                                 DEAN WITTER 
                                                 S&P 500 INDEX FUND 
- ----------------------------------------------------------------------------- 

   Dean Witter S&P 500 Index Fund (the "Fund") is an open-end, diversified 
management investment company whose investment objective is to provide 
investment results that, before expenses, correspond to the total return 
(i.e., the combination of capital changes and income) of the S&P 500 
Composite Stock Price Index (the "S&P 500 Index"). The Fund seeks to meet its 
investment objective by investing, under normal circumstances, at least 80% 
of the value of its total assets in equity securities included in the S&P 500 
Index in approximately the same weightings as the Index. (See "Investment 
Practices and Policies.") 

   
   A Prospectus for the Fund dated March 31, 1998, which provides the basic 
information you should know before investing in the Fund, may be obtained 
without charge from the Fund at its address or telephone numbers listed below 
or from the Fund's Distributor, Dean Witter Distributors Inc., or from Dean 
Witter Reynolds Inc, at any of its branch offices. This Statement of 
Additional Information is not a Prospectus. It contains information in 
addition to and more detailed than that set forth in the Prospectus. It is 
intended to provide additional information regarding the activities and 
operations of the Fund, and should be read in conjunction with the 
Prospectus. 
    

Dean Witter S&P 500 Index Fund 
Two World Trade Center 
New York, New York 10048 
(212) 392-2550 or 
(800) 869-NEWS (toll-free) 

<PAGE>
TABLE OF CONTENTS 
- ----------------------------------------------------------------------------- 

   
<TABLE>
<CAPTION>
<S>                                                        <C>
 The Fund and its Management..............................  3 
Trustees and Officers....................................   7 
Investment Practices and Policies........................  13 
Investment Restrictions..................................  17 
Portfolio Transactions and Brokerage.....................  18 
The Distributor..........................................  19 
Determination of Net Asset Value ........................  23 
Purchase of Fund Shares .................................  24 
Shareholder Services.....................................  26 
Redemptions and Repurchases..............................  31 
Dividends, Distributions and Taxes.......................  32 
Performance Information..................................  33 
Shares of the Fund.......................................  34 
Custodian and Transfer Agent ............................  35 
Independent Accountants..................................  35 
Reports to Shareholders..................................  35 
Legal Counsel............................................  35 
Experts .................................................  36 
Registration Statement...................................  36 
Report of Independent Accountants .......................  37 
Statement of Assets and Liabilities as at July 28, 1997    38 
</TABLE>
    

                                2           
<PAGE>
THE FUND AND ITS MANAGEMENT 
- ----------------------------------------------------------------------------- 

THE FUND 

   The Fund is a trust of the type commonly known as a "Massachusetts 
business trust" and was organized under the laws of the Commonwealth of 
Massachusetts on June 18, 1997. 

THE INVESTMENT MANAGER 

   
   Dean Witter InterCapital Inc. (the "Investment Manager" or 
"InterCapital"), a Delaware corporation, whose address is Two World Trade 
Center, New York, New York 10048, is the Fund's Investment Manager. 
InterCapital is a wholly-owned subsidiary of Morgan Stanley Dean Witter & Co. 
("MSDW"), a Delaware corporation. In an internal reorganization which took 
place in January, 1993, InterCapital assumed the investment advisory, 
administrative and management activities previously performed by the 
InterCapital Division of Dean Witter Reynolds Inc. ("DWR"), a broker-dealer 
affiliate of InterCapital. (As hereinafter used in this Statement of 
Additional Information, the terms "InterCapital" and "Investment Manager" 
refer to DWR's InterCapital Division prior to the internal reorganization and 
to Dean Witter InterCapital Inc. thereafter). The daily management of the 
Fund and research relating to the Fund's portfolio are conducted by or under 
the direction of officers of the Fund and of the Investment Manager, subject 
to review by the Fund's Board of Trustees. Information as to these Trustees 
and officers is contained under the caption "Trustees and Officers." 
    

   InterCapital is also the investment manager (or investment adviser) of the 
following investment companies: 

OPEN-END FUNDS 

   
 1 Active Assets California Tax-Free Trust 
 2 Active Assets Government Securities Trust 
 3 Active Assets Money Trust 
 4 Active Assets Tax-Free Trust 
 5 Dean Witter American Value Fund 
 6 Dean Witter Balanced Growth Fund 
 7 Dean Witter Balanced Income Fund 
 8 Dean Witter California Tax-Free Daily 
    Income Trust 
 9 Dean Witter California Tax-Free Income Fund 
10 Dean Witter Capital Appreciation Fund 
11 Dean Witter Capital Growth Securities 
12 Dean Witter Convertible Securities Trust 
13 Dean Witter Developing Growth Securities 
    Trust 
14 Dean Witter Diversified Income Trust 
15 Dean Witter Dividend Growth Securities Inc. 
16 Dean Witter European Growth Fund Inc. 
17 Dean Witter Federal Securities Trust 
18 Dean Witter Financial Services Trust 
19 Dean Witter Fund of Funds 
20 Dean Witter Global Asset Allocation Fund 
21 Dean Witter Global Dividend Growth 
    Securities 
22 Dean Witter Global Short-Term Income 
    Fund Inc. 
23 Dean Witter Global Utilities Fund 
24 Dean Witter Hawaii Municipal Trust 
25 Dean Witter Health Sciences Trust 
26 Dean Witter High Yield Securities Inc. 
27 Dean Witter Income Builder Fund 
28 Dean Witter Information Fund 
29 Dean Witter Intermediate Income Securities 
30 Dean Witter Intermediate Term U.S. 
    Treasury Trust 
31 Dean Witter International SmallCap Fund 
32 Dean Witter Japan Fund 
33 Dean Witter Limited Term Municipal Trust 
34 Dean Witter Liquid Asset Fund Inc. 
35 Dean Witter Market Leader Trust 
36 Dean Witter Mid-Cap Growth Fund 
37 Dean Witter Multi-State Municipal Series 
    Trust 
38 Dean Witter Natural Resource Development 
    Securities Inc. 
39 Dean Witter New York Municipal Money 
    Market Trust 
40 Dean Witter New York Tax-Free Income Fund 
41 Dean Witter Pacific Growth Fund Inc. 
42 Dean Witter Precious Metals and Minerals 
    Trust 
43 Dean Witter Retirement Series 
44 Dean Witter Select Dimensions Investment 
    Series 
45 Dean Witter Select Municipal Reinvestment 
    Fund 
46 Dean Witter Short-Term Bond Fund 
47 Dean Witter Short-Term U.S. Treasury Trust 
48 Dean Witter Special Value Fund 
49 Dean Witter Strategist Fund 
    

                                3           
<PAGE>
   
50 Dean Witter Tax-Exempt Securities Trust 
51 Dean Witter Tax-Free Daily Income Trust 
52 Dean Witter U.S. Government Money 
    Market Trust 
53 Dean Witter U.S. Government Securities 
    Trust 
54 Dean Witter Utilities Fund 
55 Dean Witter Value-Added Market Series 
56 Dean Witter Variable Investment Series 
57 Dean Witter World Wide Income Trust 
58 Dean Witter World Wide Investment Trust 
59 Morgan Stanley Dean Witter Competitive  Edge Fund 
60 Morgan Stanley Dean Witter Growth Fund 
61 Morgan Stanley Dean Witter Mid-Cap 
    Dividend Growth Securities 
    

CLOSED-END FUNDS 

 1 High Income Advantage Trust 
 2 High Income Advantage Trust II 
 3 High Income Advantage Trust III 
 4 InterCapital Income Securities Inc. 
 5 Dean Witter Government Income Trust 
 6 InterCapital Insured Municipal Bond Trust 
 7 InterCapital Insured Municipal Trust 
 8 InterCapital Insured Municipal Income Trust 
 9 InterCapital California Insured Municipal 
    Income Trust 
10 InterCapital Insured Municipal Securities 
11 InterCapital Insured California Municipal 
    Securities 
12 InterCapital Quality Municipal Investment 
    Trust 
13 InterCapital Quality Municipal Income Trust 
14 InterCapital Quality Municipal Securities 
15 InterCapital California Quality Municipal 
    Securities 
16 InterCapital New York Quality Municipal 
    Securities 
17 Municipal Income Trust 
18 Municipal Income Trust II 
19 Municipal Income Trust III 
20 Municipal Income Opportunities Trust 
21 Municipal Income Opportunities Trust II 
22 Municipal Income Opportunities Trust III 
23 Prime Income Trust 
24 Municipal Premium Income Trust 

   The foregoing investment companies, together with the Fund, are 
collectively referred to as the Dean Witter Funds. 

   In addition, Dean Witter Services Company Inc. ("DWSC"), a wholly-owned 
subsidiary of InterCapital, serves as manager for the following investment 
companies for which TCW Funds Management, Inc. is the investment adviser (the 
"TCW/DW Funds"): 

OPEN-END FUNDS 

   
 1 TCW/DW Emerging Markets Opportunities Trust 
 2 TCW/DW Global Telecom Trust 
 3 TCW/DW Income and Growth Fund 
 4 TCW/DW Latin American Growth Fund 
 5 TCW/DW Mid-Cap Equity Trust 
 6 TCW/DW North American Government 
   Income Trust 
 7 TCW/DW Small Cap Growth Fund 
 8 TCW/DW Total Return Trust 

CLOSED-END FUNDS 
 1 TCW/DW Term Trust 2000 
 2 TCW/DW Term Trust 2002 
 3 TCW/DW Term Trust 2003 

   InterCapital also serves as: (i) administrator of The BlackRock Strategic 
Term Trust Inc., a closed-end investment company; (ii) sub-administrator of 
Templeton Global Governments Income Trust, a closed-end investment company; 
and (iii) investment adviser of Offshore Dividend Growth Fund and Offshore 
Money Market Fund, mutual funds established under the laws of the Cayman 
Islands and available only to investors who are participants in DWR's 
International Active Assets Account program and are neither citizens nor 
residents of the United States. 
    

                                4           
<PAGE>
   Pursuant to an Investment Management Agreement (the "Agreement") with the 
Investment Manager, the Fund has retained the Investment Manager to manage 
the investment of the Fund's assets, including the placing of orders for the 
purchase and sale of portfolio securities. The Investment Manager obtains and 
evaluates such information and advice relating to the economy, securities 
markets and specific securities as it considers necessary or useful to 
continuously manage the assets of the Fund in a manner consistent with its 
investment objective. 

   Under the terms of the Agreement, in addition to managing the Fund's 
investments, the Investment Manager maintains certain of the Fund's books and 
records and furnishes, at its own expense, such office space, facilities, 
equipment, clerical help and bookkeeping and certain legal services as the 
Fund may reasonably require in the conduct of its business, including the 
preparation of prospectuses, statements of additional information, proxy 
statements and reports required to be filed with federal and state securities 
commissions (except insofar as the participation or assistance of independent 
accountants and attorneys is, in the opinion of the Investment Manager, 
necessary or desirable). In addition, the Investment Manager pays the 
salaries of all personnel, including officers of the Fund, who are employees 
of the Investment Manager. The Investment Manager also bears the cost of 
telephone service, heat, light, power and other utilities provided to the 
Fund. The Investment Manager has retained DWSC to perform its administrative 
services under the Agreement. 

   
   Expenses not expressly assumed by the Investment Manager under the 
Agreement or by Dean Witter Distributors Inc., the Distributor of the Fund's 
shares ("Distributors" or "the Distributor") will be paid by the Fund. These 
expenses will be allocated among the four classes of shares of the Fund 
(each, a "Class") pro rata based on the net assets of the Fund attributable 
to each Class, except as described below. Such expenses include, but are not 
limited to: expenses of the Plan of Distribution pursuant to Rule 12b-1 (the 
"12b-1 fee") (see "The Distributor"); charges and expenses of any registrar; 
custodian, stock transfer and dividend disbursing agent; brokerage 
commissions; taxes; engraving and printing of share certificates; 
registration costs of the Fund and its shares under federal and state 
securities laws; the cost and expense of printing, including typesetting, and 
distributing Prospectuses and Statements of Additional Information of the 
Fund and supplements thereto to the Fund's shareholders; all expenses of 
shareholders' and Trustees' meetings and of preparing, printing and mailing 
of proxy statements and reports to shareholders; fees and travel expenses of 
Trustees or members of any advisory board or committee who are not employees 
of the Investment Manager or any corporate affiliate of the Investment 
Manager; all expenses incident to any dividend, withdrawal or redemption 
options; charges and expenses of any outside service used for pricing of the 
Fund's shares; fees and expenses of legal counsel, including counsel to the 
Trustees who are not interested persons of the Fund or of the Investment 
Manager (not including compensation or expenses of attorneys who are 
employees of the Investment Manager) and independent accountants; membership 
dues of industry associations; interest on Fund borrowings; postage; 
insurance premiums on property or personnel (including officers and Trustees) 
of the Fund which inure to its benefit; extraordinary expenses (including, 
but not limited to, legal claims and liabilities and litigation costs and any 
indemnification relating thereto); and all other costs of the Fund's 
operation. The 12b-1 fees relating to a particular Class will be allocated 
directly to that Class. In addition, other expenses associated with a 
particular Class (except advisory or custodial fees) may be allocated 
directly to that Class, provided that such expenses are reasonably identified 
as specifically attributable to that Class and the direct allocation to that 
Class is approved by the Trustees. 

   As full compensation for the services and facilities furnished to the Fund 
and expenses of the Fund assumed by the Investment Manager, the Fund pays the 
Investment Manager monthly compensation calculated daily by applying the 
annual rate of 0.40% to the Fund's daily net assets. The management fee is 
allocated among the Classes pro rata based on the net assets of the Fund 
attributable to each Class. The Investment Manager has agreed to assume all 
expenses (except for brokerage and 12b-1 fees) and to waive the compensation 
provided for in its Management Agreement to the extent that such expenses and 
compensation on an annualized basis exceed 0.50% of the daily net assets of 
the Fund. During the period September 26, 1997 (commencement of operations) 
through February 28, 1998, the Fund accrued total compensation to the 
Investment Manager under the Management Agreement in the amount of $510,357, 
$212,252 of which was waived by the Investment Manager pursuant to the 
undertaking described above. 
    

                                5           
<PAGE>
   The Agreement provides that in the absence of willful misfeasance, bad 
faith, gross negligence or reckless disregard of its obligations thereunder, 
the Investment Manager is not liable to the Fund or any of its investors for 
any act or omission by the Investment Manager or for any losses sustained by 
the Fund or its investors. The Agreement in no way restricts the Investment 
Manager from acting as investment manager or adviser to others. 

   
   The Investment Manager paid the organizational expenses of the Fund 
incurred prior to the offering of the Fund's shares. The Fund has agreed to 
bear and reimburse the Investment Manager for such expenses, which totalled 
approximately $49,500. The organizational expenses of the Fund are being 
deferred by the Fund and are being amortized on the straight line method over 
a period not to exceed five years from the date of commencement of the Fund's 
operations. 
    

   The Agreement was initially approved by the Trustees on July 23, 1997 and 
by InterCapital, as the then sole shareholder, on July 28, 1997. The 
Agreement may be terminated at any time, without penalty, on thirty days' 
notice by the Trustees of the Fund, by the holders of a majority of the 
outstanding shares of the Fund, as defined in the Investment Company Act of 
1940, as amended (the "Act"), or by the Investment Manager. The Agreement 
will automatically terminate in the event of its assignment (as defined in 
the Act). 

   Under its terms, the Agreement has an initial term ending April 30, 1999 
and will continue from year to year thereafter, provided continuance of the 
Agreement is approved at least annually by the vote of the holders of a 
majority of the outstanding shares of the Fund, as defined in the Act, or by 
the Trustees of the Fund; provided that in either event such continuance is 
approved annually by the vote of a majority of the Trustees of the Fund who 
are not parties to the Agreement or "interested persons" (as defined in the 
Act) of any such party (the "Independent Trustees"), which vote must be cast 
in person at a meeting called for the purpose of voting on such approval. 

   
   The following persons owned 5% or more of the outstanding shares of Class 
A on February 27, 1998: Dean Witter Trust FSB Trustee, Ashcraft & Gerel 
Target Benefit Plan, P.O. Box 957, Jersey City, NJ 07303--11.619%; RPM007 
Stark Co Women's Clinic, Retirement Savings Plan, Main Holding FD #6, Attn: 
B. Kindig, 5000 Higbee Avenue NW, Canton, OH 44718--11.361%; RPM007 Tri Co 
Orthopedic Surgeons Retirement Savings Plan, Mutual Fund-Portfolio #6, 1413 
Harbor Drive NW, Canton, OH 44708--10.132%; and Dave Sorenson & Marsha 
Sorensen JTTEN, 2625 W. Lake Van Ness Circle, Fresno, CA 93711--5.768%. 

   The following persons owned 5% or more of the outstanding shares of Class 
D on February 27, 1998: Dean Witter Trust FSB Trustee, Pizzagalli 
Construction, P.O. Box 957, Jersey City, NJ 07303--81.330% and Hare & Co., 
c/o The Bank of New York, P.O. Box 11203, New York, NY 10286--8.692%. 

   The Fund has acknowledged that the name "Dean Witter" is a property right 
of DWR. The Fund has agreed that DWR or its parent company may use or, at any 
time, permit others to use, the name "Dean Witter." The Fund has also agreed 
that in the event the Agreement is terminated, or if the affiliation between 
InterCapital and its parent company is terminated, the Fund will eliminate 
the name "Dean Witter" from its name if DWR or its parent company shall so 
request. 
    

                                6           
<PAGE>
TRUSTEES AND OFFICERS 
- ----------------------------------------------------------------------------- 

   
   The Trustees and Executive Officers of the Fund, their principal business 
occupations during the last five years and their affiliations, if any, with 
InterCapital, and with the 86 Dean Witter Funds and the 11 TCW/DW Funds are 
shown below: 
    

   
<TABLE>
<CAPTION>
  NAME, AGE, POSITION WITH FUND AND ADDRESS         PRINCIPAL OCCUPATIONS DURING LAST FIVE YEARS 
- --------------------------------------------  -------------------------------------------------------- 
<S>                                          <C>
Michael Bozic (57)..........................  Chairman and Chief Executive Officer of Levitz Furniture 
Trustee                                       (since November, 1995); Director or Trustee of the Dean 
c/o Levitz Furniture Corporation              Witter Funds; formerly President and Chief Executive 
7887 N. Federal Highway                       Officer of Hills Department Stores (May, 1991-July, 
Boca Raton, Florida                           1995); formerly variously Chairman, Chief Executive 
                                              Officer, President and Chief Operating Officer 
                                              (1987-1991) of the Sears Merchandise Group of Sears, 
                                              Roebuck and Co.; Director of Eaglemark Financial 
                                              Services, Inc., The United Negro College Fund and 
                                              Weirton Steel Corporation. 

Charles A. Fiumefreddo* (64)................. Chairman, Chief Executive Officer and Director of 
Chairman, President,                          InterCapital, Distributors and DWSC; Executive Vice 
Chief Executive Officer and Trustee           President and Director of DWR; Chairman, Director or 
Two World Trade Center                        Trustee, President and Chief Executive Officer of the 
New York, New York                            Dean Witter Funds; Chairman, Chief Executive Officer and 
                                              Trustee of the TCW/DW Funds; Chairman and Director of 
                                              Morgan Stanley Dean Witter Trust FSB ("MSDW Trust"); 
                                              Director and/or officer of various MSDW subsidiaries. 
Edwin J. Garn (65)..........................  Director or Trustee of the Dean Witter Funds; formerly 
Trustee                                       United States Senator (R-Utah)(1974-1992) and Chairman, 
c/o Huntsman Corporation                      Senate Banking Committee (1980-1986); formerly Mayor of 
500 Huntsman Way                              Salt Lake City, Utah (1972-1974); formerly Astronaut, 
Salt Lake City, Utah                          Space Shuttle Discovery (April 12-19, 1985); Vice 
                                              Chairman, Huntsman Corporation; Director of Franklin 
                                              Covey (time management systems); John Alden Financial 
                                              Corp. (health insurance); United Space Alliance (joint 
                                              venture between Lockheed Martin and Boeing Company) and 
                                              Nuskin Asia Pacific (multilevel marketing); member of 
                                              the board of various civic and charitable organizations. 
John R. Haire (73)..........................  Chairman of the Audit Committee and Chairman of the 
Trustee                                       Committee of the Independent Directors or Trustees and 
Two World Trade Center                        Director or Trustee of the Dean Witter Funds; Chairman 
New York, New York                            of the Audit Committee and Chairman of the Committee of 
                                              the Independent Trustees and Trustee of the TCW/DW 
                                              Funds; formerly President, Council for Aid to Education 
                                              (1978-1989) and Chairman and Chief Executive Officer of 
                                              Anchor Corporation, an Investment Adviser (1964-1978). 

                                7           
<PAGE>
  NAME, AGE, POSITION WITH FUND AND ADDRESS         PRINCIPAL OCCUPATIONS DURING LAST FIVE YEARS 
- --------------------------------------------  -------------------------------------------------------- 
Wayne E. Hedien (64) .......................  Retired; Director or Trustee of the Dean Witter Funds; 
Trustee                                       Director of The PMI Group, Inc. (private mortgage 
c/o Gordon Altman Butowsky                    insurance); Trustee and Vice Chairman of The Field 
 Weitzen Shalov & Wein                        Museum of Natural History; formerly associated with the 
Counsel to the Independent Trustees           Allstate Companies (1966-1994), most recently as 
114 West 47th Street                          Chairman of The Allstate Corporation (March, 
New York, New York                            1993-December, 1994) and Chairman and Chief Executive 
                                              Officer of its wholly-owned subsidiary, Allstate 
                                              Insurance Company (July, 1989-December, 1994); director 
                                              of various other business and charitable organizations. 

Dr. Manuel H. Johnson (49)..................  Senior Partner, Johnson Smick International, Inc., a 
Trustee                                       consulting firm; Co-Chairman and a founder of the Group 
c/o Johnson Smick International, Inc.         of Seven Council (G7C), an international economic 
1133 Connecticut Avenue, N.W.                 commission; Director or Trustee of the Dean Witter 
Washington, DC                                Funds; Trustee of the TCW/DW Funds; Director of NASDAQ 
                                              (since June, 1995); Director of Greenwich Capital 
                                              Markets, Inc. (broker-dealer); Chairman and Trustee of 
                                              the Financial Accounting Foundation (oversight 
                                              organization for the FASB); formerly Vice Chairman of 
                                              the Board of Governors of the Federal Reserve System 
                                              (1986-1990) and Assistant Secretary of the U.S. Treasury 
                                              (1982-1986). 
Michael E. Nugent (61)......................  General Partner, Triumph Capital, L.P., a private 
Trustee                                       investment partnership; Director or Trustee of the Dean 
c/o Triumph Capital, L.P.                     Witter Funds; Trustee of the TCW/DW Funds; formerly Vice 
237 Park Avenue                               President, Bankers Trust Company and BT Capital 
New York, New York                            Corporation (1984-1988); Director of various business 
                                              organizations. 

Philip J. Purcell* (54).....................  Chairman of the Board of Directors and Chief Executive 
Trustee                                       Officer of MSDW, DWR and Novus Credit Services Inc.; 
1585 Broadway                                 Director of InterCapital, DWSC and Distributors; 
New York, New York                            Director or Trustee of the Dean Witter Funds; Director 
                                              and/or officer of various MSDW subsidiaries. 

John L. Schroeder (67)......................  Retired; Director or Trustee of the Dean Witter Funds; 
Trustee                                       Trustee of the TCW/DW Funds; Director of Citizens 
c/o Gordon Altman Butowsky                    Utilities Company; formerly Executive Vice President and 
 Weitzen Shalov & Wein                        Chief Investment Officer of the Home Insurance Company 
Counsel to the Independent Trustees           (August, 1991-Septem ber, 1995). 
114 West 47th Street 
New York, New York 

                                8           
<PAGE>
  NAME, AGE, POSITION WITH FUND AND ADDRESS         PRINCIPAL OCCUPATIONS DURING LAST FIVE YEARS 
- --------------------------------------------  -------------------------------------------------------- 
Barry Fink (43).............................. Senior Vice President (since March, 1997) and Secretary 
Vice President,                               and General Counsel (since February, 1997) of 
Secretary and General Counsel                 InterCapital and DWSC; Senior Vice President (since 
Two World Trade Center                        March, 1997) and Assistant Secretary and Assistant 
New York, New York                            General Counsel (since February, 1997) of Distributors; 
                                              Assistant Secretary of DWR (since August, 1996); Vice 
                                              President, Secretary and General Counsel of the Dean 
                                              Witter Funds and the TCW/DW Funds (since February, 
                                              1997); previously First Vice President (June, 
                                              1993-February, 1997); Vice President (until June, 1993) 
                                              and Assistant Secretary and Assistant General Counsel of 
                                              InterCapital and DWSC and Assistant Secretary of the 
                                              Dean Witter Funds and the TCW/DW Funds. 

Kenton J. Hinchliffe (53).................... Senior Vice President of InterCapital; Vice President of 
Vice President                                various Dean Witter Funds. 
Two World Trade Center 
New York, New York 
Thomas F. Caloia (52) ........................ First Vice President and Assistant Treasurer of 
Treasurer                                     InterCapital and DWSC; Treasurer of the Dean Witter 
Two World Trade Center                        Funds and the TCW/DW Funds. 
New York, New York
</TABLE>
    

   
- ------------ 
* Denotes Trustees who are "interested persons" of the Fund, as defined in 
the Act. 

   In addition, Mitchell M. Merin, President and Chief Strategic Officer of 
InterCapital and DWSC, Executive Vice President of Distributors and MSDW 
Trust and Director of MSDW Trust, Executive Vice President and Director of 
DWR, and Director of SPS Transaction Services, Inc. and various other MSDW 
subsidiaries, Robert M. Scanlan, President and Chief Operating Officer of 
InterCapital and DWSC, Executive Vice President of Distributors and MSDW 
Trust and Director of MSDW Trust, Joseph J. McAlinden, Executive Vice 
President and Chief Investment Officer of InterCapital and Director of MSDW 
Trust, Robert S. Giambrone, Senior Vice President of InterCapital, DWSC, 
Distributors and MSDW Trust and Director of MSDW Trust, and Paul D. Vance, 
Peter Hermann, Mark Bavoso and Ira Ross, Senior Vice Presidents of 
InterCapital, are Vice Presidents of the Fund. In addition, Marilyn K. 
Cranney, First Vice President and Assistant General Counsel of InterCapital 
and DWSC, Lou Anne D. McInnis, Ruth Rossi and Carsten Otto, Vice Presidents 
and Assistant General Counsels of InterCapital and DWSC, and Frank 
Bruttomesso and Todd Lebo, staff attorneys with InterCapital, are Assistant 
Secretaries of the Fund. 

THE BOARD OF TRUSTEES, THE INDEPENDENT TRUSTEES, AND THE COMMITTEES 

   The Board of Trustees consists of nine (9) trustees. These same 
individuals also serve as directors or trustees for all of the Dean Witter 
Funds, and are referred to in this section as Trustees. As of the date of 
this Statement of Additional Information, there are a total of 86 Dean Witter 
Funds, comprised of 130 portfolios. As of February 28, 1998, the Dean Witter 
Funds had total net assets of approximately $101 billion and more than six 
million shareholders. 

   Seven Trustees (77% of the total number) have no affiliation or business 
connection with InterCapital or any of its affiliated persons and do not own 
any stock or other securities issued by InterCapital's parent company, MSDW. 
These are the "disinterested" or "independent" Trustees. The other two 
Trustees (the "management Trustees") are affiliated with InterCapital. Four 
of the seven independent Trustees are also Independent Trustees of the TCW/DW 
Funds. 
    

                                9           
<PAGE>
   
   Law and regulation establish both general guidelines and specific duties 
for the Independent Trustees. The Dean Witter Funds seek as Independent 
Trustees individuals of distinction and experience in business and finance, 
government service or academia; these are people whose advice and counsel are 
in demand by others and for whom there is often competition. To accept a 
position on the Funds' Boards, such individuals may reject other attractive 
assignments because the Funds make substantial demands on their time. Indeed, 
by serving on the Funds' Boards, certain Trustees who would otherwise be 
qualified and in demand to serve on bank boards would be prohibited by law 
from doing so. 

   All of the Independent Trustees serve as members of the Audit Committee 
and the Committee of the Independent Trustees. Three of them also serve as 
members of the Derivatives Committee. During the calendar year ended December 
31, 1997, the three Committees held a combined total of seventeen meetings. 
The Committees hold some meetings at InterCapital's offices and some outside 
InterCapital. Management Trustees or officers do not attend these meetings 
unless they are invited for purposes of furnishing information or making a 
report. 

   The Committee of the Independent Trustees is charged with recommending to 
the full Board approval of management, advisory and administration contracts, 
Rule 12b-1 plans and distribution and underwriting agreements; continually 
reviewing Fund performance; checking on the pricing of portfolio securities, 
brokerage commissions, transfer agent costs and performance, and trading 
among Funds in the same complex; and approving fidelity bond and related 
insurance coverage and allocations, as well as other matters that arise from 
time to time. The Independent Trustees are required to select and nominate 
individuals to fill any Independent Trustee vacancy on the Board of any Fund 
that has a Rule 12b-1 plan of distribution. Most of the Dean Witter Funds 
have such a plan. 

   The Audit Committee is charged with recommending to the full Board the 
engagement or discharge of the Fund's independent accountants; directing 
investigations into matters within the scope of the independent accountants' 
duties, including the power to retain outside specialists; reviewing with the 
independent accountants the audit plan and results of the auditing 
engagement; approving professional services provided by the independent 
accountants and other accounting firms prior to the performance of such 
services; reviewing the independence of the independent accountants; 
considering the range of audit and non-audit fees; reviewing the adequacy of 
the Fund's system of internal controls; and preparing and submitting 
Committee meeting minutes to the full Board. 

   Finally, the Board of each Fund has formed a Derivatives Committee to 
establish parameters for and oversee the activities of the Fund with respect 
to derivative investments, if any, made by the Fund. 

DUTIES OF CHAIRMAN OF COMMITTEE OF THE INDEPENDENT TRUSTEES AND AUDIT 
COMMITTEE 

   The Chairman of the Committee of the Independent Trustees and the Audit 
Committee maintains an office at the Funds' headquarters in New York. He is 
responsible for keeping abreast of regulatory and industry developments and 
the Funds' operations and management. He screens and/or prepares written 
materials and identifies critical issues for the Independent Trustees to 
consider, develops agendas for Committee meetings, determines the type and 
amount of information that the Committees will need to form a judgment on 
various issues, and arranges to have that information furnished to Committee 
members. He also arranges for the services of independent experts and 
consults with them in advance of meetings to help refine reports and to focus 
on critical issues. Members of the Committees believe that the person who 
serves as Chairman of both Committees and guides their efforts is pivotal to 
the effective functioning of the Committees. 

   The Chairman of the Committees also maintains continuous contact with the 
Funds' management, with independent counsel to the Independent Trustees and 
with the Funds' independent auditors. He arranges for a series of special 
meetings involving the annual review of investment advisory, management and 
other operating contracts of the Funds and, on behalf of the Committees, 
conducts negotiations with the Investment Manager and other service 
providers. In effect, the Chairman of the Committees serves as a combination 
of chief executive and support staff of the Independent Trustees. 

   The Chairman of the Committee of the Independent Trustees and the Audit 
Committee is not employed by any other organization and devotes his time 
primarily to the services he performs as 
    

                               10           
<PAGE>
   
Committee Chairman and Independent Trustee of the Dean Witter Funds and as an 
Independent Trustee and as Chairman of the Committee of the Independent 
Trustees and the Audit Committee of the TCW/DW Funds. The current Committee 
Chairman has had more than 35 years experience as a senior executive in the 
investment company industry. 

ADVANTAGES OF HAVING SAME INDIVIDUALS AS INDEPENDENT TRUSTEES FOR ALL DEAN 
WITTER FUNDS 

   The Independent Trustees and the Funds' management believe that having the 
same Independent Trustees for each of the Dean Witter Funds avoids the 
duplication of effort that would arise from having different groups of 
individuals serving as Independent Trustees for each of the Funds or even of 
sub-groups of Funds. They believe that having the same individuals serve as 
Independent Trustees of all the Funds tends to increase their knowledge and 
expertise regarding matters which affect the Fund complex generally and 
enhances their ability to negotiate on behalf of each Fund with the Fund's 
service providers. This arrangement also precludes the possibility of 
separate groups of Independent Trustees arriving at conflicting decisions 
regarding operations and management of the Funds and avoids the cost and 
confusion that would likely ensue. Finally, having the same Independent 
Trustees serve on all Fund Boards enhances the ability of each Fund to 
obtain, at modest cost to each separate Fund, the services of Independent 
Trustees, and a Chairman of their Committees, of the caliber, experience and 
business acumen of the individuals who serve as Independent Trustees of the 
Dean Witter Funds. 

COMPENSATION OF INDEPENDENT TRUSTEES 

   The Fund pays each Independent Trustee an annual fee of $800 plus a per 
meeting fee of $50 for meetings of the Board of Trustees or committees of the 
Board of Trustees attended by the Trustee (the Fund pays the Chairman of the 
Audit Committee an annual fee of $750 and pays the Chairman of the Committee 
of the Independent Trustees an additional annual fee of $1,200). If a Board 
meeting and a Committee meeting, or more than one Committee meeting, take 
place on a single day, the Trustees are paid a single meeting fee by the 
Fund. The Fund also reimburses such Trustees for travel and other 
out-of-pocket expenses incurred by them in connection with attending such 
meetings. Trustees and officers of the Fund who are or have been employed by 
the Investment Manager or an affiliated company receive no compensation or 
expense reimbursement from the Fund. 

   At such time as the Fund has been in operation, and has paid fees to the 
Independent Trustees, for a full fiscal year, and assuming that during such 
fiscal year the Fund holds the same number of Board and committee meetings as 
were held by the other Dean Witter Funds during the calendar year ended 
December 31, 1997, it is estimated that the compensation paid to each 
Independent Trustee during such fiscal year will be the amount shown in the 
following table: 

                        FUND COMPENSATION (ESTIMATED) 
    

   
<TABLE>
<CAPTION>
                               AGGREGATE 
    NAME OF INDEPENDENT       COMPENSATION 
TRUSTEE                      FROM THE FUND 
- --------------------------  --------------- 
<S>                         <C>
Michael Bozic .............      $1,600 
Edwin J. Garn .............       1,600 
John R. Haire .............       3,550 
Wayne E. Hedien............       1,600 
Dr. Manuel H. Johnson  ....       1,600 
Michael E. Nugent..........       1,600 
John L. Schroeder..........       1,600 
</TABLE>
    

                               11           
<PAGE>
   
   The following table illustrates the compensation paid to the Fund's 
Independent Trustees for the calendar year ended December 31, 1997 for 
services to the 84 Dean Witter Funds and, in the case of Messrs. Haire, 
Johnson, Nugent and Schroeder, the 14 TCW/DW Funds that were in operation at 
December 31, 1997. With respect to Messrs. Haire, Johnson, Nugent and 
Schroeder, the TCW/DW Funds are included solely because of a limited exchange 
privilege between those Funds and five Dean Witter Money Market Funds. Mr. 
Hedien's term as Director or Trustee of each Dean Witter Fund commenced on 
September 1, 1997. 

          CASH COMPENSATION FROM DEAN WITTER FUNDS AND TCW/DW FUNDS 
    

   
<TABLE>
<CAPTION>
                                                            FOR SERVICE AS 
                                                              CHAIRMAN OF 
                                                             COMMITTEES OF    FOR SERVICE AS 
                                                              INDEPENDENT      CHAIRMAN OF 
                          FOR SERVICE                         DIRECTORS/      COMMITTEES OF      TOTAL CASH 
                         AS DIRECTOR OR    FOR SERVICE AS    TRUSTEES AND      INDEPENDENT      COMPENSATION 
                          TRUSTEE AND       TRUSTEE AND          AUDIT           TRUSTEES     FOR SERVICES TO 
                        COMMITTEE MEMBER  COMMITTEE MEMBER COMMITTEES OF 84     AND AUDIT      84 DEAN WITTER 
NAME OF                OF 84 DEAN WITTER    OF 14 TCW/DW      DEAN WITTER    COMMITTEES OF 14   FUNDS AND 14 
INDEPENDENT TRUSTEE          FUNDS             FUNDS             FUNDS         TCW/DW FUNDS     TCW/DW FUNDS 
- ---------------------  ----------------- ----------------  ---------------- ----------------  --------------- 
<S>                    <C>               <C>               <C>              <C>               <C>
Michael Bozic ........      $133,602             --               --                --            $133,602 
Edwin J. Garn ........       149,702             --               --                --             149,702 
John R. Haire ........       149,702          $73,725          $157,463          $25,350           406,240 
Wayne E. Hedien.......        39,010             --               --                --              39,010 
Dr. Manuel H. Johnson        145,702           71,125             --                --             216,827 
Michael E. Nugent  ...       149,702           73,725             --                --             223,427 
John L. Schroeder ....       149,702           73,725             --                --             223,427 
</TABLE>
    

   
   As of the date of this Statement of Additional Information, 57 of the Dean 
Witter Funds, not including the Fund, have adopted a retirement program under 
which an Independent Trustee who retires after serving for at least five 
years (or such lesser period as may be determined by the Board) as an 
Independent Director or Trustee of any Dean Witter Fund that has adopted the 
retirement program (each such Fund referred to as an "Adopting Fund" and each 
such Trustee referred to as an "Eligible Trustee") is entitled to retirement 
payments upon reaching the eligible retirement age (normally, after attaining 
age 72). Annual payments are based upon length of service. Currently, upon 
retirement, each Eligible Trustee is entitled to receive from the Adopting 
Fund, commencing as of his or her retirement date and continuing for the 
remainder of his or her life, an annual retirement benefit (the "Regular 
Benefit") equal to 25.0% of his or her Eligible Compensation plus 0.4166666% 
of such Eligible Compensation for each full month of service as an 
Independent Director or Trustee of any Adopting Fund in excess of five years 
up to a maximum of 50.0% after ten years of service. The foregoing 
percentages may be changed by the Board.(1) "Eligible Compensation" is 
one-fifth of the total compensation earned by such Eligible Trustee for 
service to the Adopting Fund in the five year period prior to the date of the 
Eligible Trustee's retirement. Benefits under the retirement program are not 
secured or funded by the Adopting Funds. 

- ---------------
(1)    An Eligible Trustee may elect alternate payments of his or her 
       retirement benefits based upon the combined life expectancy of such 
       Eligible Trustee and his or her spouse on the date of such Eligible 
       Trustee's retirement. The amount estimated to be payable under this 
       method, through the remainder of the later of the lives of such 
       Eligible Trustee and spouse, will be the actuarial equivalent of the 
       Regular Benefit. In addition, the Eligible Trustee may elect that the 
       surviving spouse's periodic payment of benefits will be equal to either 
       50% or 100% of the previous periodic amount, an election that, 
       respectively, increases or decreases the previous periodic amount so 
       that the resulting payments will be the actuarial equivalent of the 
       Regular Benefit. 
    

                               12           
<PAGE>
   
   The following table illustrates the retirement benefits accrued to the 
Fund's Independent Trustees by the 57 Dean Witter Funds (not including the 
Fund) for the year ended December 31, 1997, and the estimated retirement 
benefits for the Fund's Independent Trustees, to commence upon their 
retirement, from the 57 Dean Witter Funds as of December 31, 1997. 

                RETIREMENT BENEFITS FROM ALL DEAN WITTER FUNDS 
    

   
<TABLE>
<CAPTION>
                                                                             ESTIMATED 
                                                               RETIREMENT      ANNUAL 
                               ESTIMATED                        BENEFITS      BENEFITS 
                                CREDITED                       ACCRUED AS       UPON 
                                 YEARS          ESTIMATED       EXPENSES     RETIREMENT 
                             OF SERVICE AT    PERCENTAGE OF      BY ALL       FROM ALL 
    NAME OF INDEPENDENT        RETIREMENT       ELIGIBLE        ADOPTING      ADOPTING 
TRUSTEE                       (MAXIMUM 10)    COMPENSATION       FUNDS        FUNDS(2) 
- --------------------------  --------------- ---------------  ------------- ------------ 
<S>                         <C>             <C>              <C>           <C>
Michael Bozic .............        10             50.0%         $ 20,499      $ 47,025 
Edwin J. Garn .............        10             50.0            30,878        47,025 
John R. Haire .............        10             50.0           (19,823)(3)   127,897 
Wayne E. Hedien............         9             42.5                 0        39,971 
Dr. Manuel H. Johnson  ....        10             50.0            12,832        47,025 
Michael E. Nugent .........        10             50.0            22,546        47,025 
John L. Schroeder..........         8             41.7            39,350        39,504 
</TABLE>
    

   
(2)    Based on current levels of compensation. Amount of annual benefits also 
       varies depending on the Trustee's elections described in Footnote (1) 
       above. 
(3)    This number reflects the effect of the extension of Mr. Haire's term as 
       Director or Trustee until June 1, 1998. 

   As of the date of this Statement of Additional Information, the aggregate 
number of shares of beneficial interest of the Fund owned by the Fund's 
officers and Trustees as a group was less than 1 percent of the Fund's shares 
of beneficial interest outstanding. 

INVESTMENT PRACTICES AND POLICIES 
- ----------------------------------------------------------------------------- 
    

ADDITIONAL INFORMATION CONCERNING THE S&P 500 INDEX 

   As set forth above, the Fund's investment objective is to provide 
investment results that, before expenses, correspond to the total return of 
the S&P 500 Index. 

   The Fund is not sponsored, endorsed, sold or promoted by Standard & 
Poor's. Standard & Poor's makes no representation or warranty, express or 
implied, to the owners of shares of the Fund or any member of the public 
regarding the advisability of investing in securities generally or in the 
Fund particularly or the ability of the S&P 500 Index to track general stock 
market performance. Standard & Poor's only relationship to the Fund is the 
licensing of certain trademarks and trade names of Standard & Poor's and of 
the S&P 500 Index which is determined, composed and calculated by Standard & 
Poor's without regard to the Fund. Standard & Poor's has no obligation to 
take the needs of the Fund or the owners of shares of the Fund into 
consideration in determining, composing or calculating the S&P 500 Index. 
Standard & Poor's is not responsible for and has not participated in the 
determination of the prices and amount of the Fund or the timing of the 
issuance of sale of shares of the Fund. Standard & Poor's has no obligation 
or liability in connection with the administration, marketing or trading of 
the Fund. 

   Standard & Poor's does not guarantee the accuracy and/or the completeness 
of the S&P 500 Index or any data included therein and Standard & Poor's shall 
have no liability for any errors, omissions, or interruptions therein. 
Standard & Poor's makes no warranty, express or implied, as to results to be 
obtained by the Fund, owners of shares of the Fund, or any other person or 
entity from the use of the S&P 500 Index or any data included therein. 
Standard & Poor's makes no express or implied warranties, and expressly 
disclaims all warranties of merchantability or fitness for a particular 
purpose or use with respect to the S&P 500 Index or any data included 
therein. Without limiting any of the foregoing, in no event shall Standard & 
Poor's have any liability for any special, punitive, indirect, or 
consequential damages (including lost profits), even if notified of the 
possibility of such damages. 

                               13           
<PAGE>
REPURCHASE AGREEMENTS 

   When cash may be available for only a few days, it may be invested by the 
Fund in repurchase agreements until such time as it may otherwise be invested 
or used for payments of obligations of the Fund. These agreements, which may 
be viewed as a type of secured lending by the Fund, typically involve the 
acquisition by the Fund of debt securities from a selling financial 
institution such as a bank, savings and loan association or broker-dealer. 
The agreement provides that the Fund will sell back to the institution, and 
that the institution will repurchase, the underlying security ("collateral") 
at a specified price and at a fixed time in the future, usually not more than 
seven days from the date of purchase. The collateral will be maintained in a 
segregated account and will be marked to market daily to determine that the 
value of the collateral, as specified in the agreement, does not decrease 
below the purchase price plus accrued interest. If such decrease occurs, 
additional collateral will be requested and, when received, added to the 
account to maintain full collateralization. The Fund will accrue interest 
from the institution until the time when the repurchase is to occur. Although 
such date is deemed by the Fund to be the maturity date of a repurchase 
agreement, the maturities of the collateral are not subject to any limits. 

   While repurchase agreements involve certain risks not associated with 
direct investments in debt securities, the Fund follows procedures designed 
to minimize such risks. These procedures include effecting repurchase 
transactions only with large, well-capitalized and well-established financial 
institutions whose financial condition will be continually monitored by the 
Investment Manager subject to procedures established by the Board of Trustees 
of the Fund. In addition, as described above, the value of the collateral 
underlying the repurchase agreement will be at least equal to the repurchase 
price, including any accrued interest earned on the repurchase agreement. In 
the event of a default or bankruptcy by a selling financial institution, the 
Fund will seek to liquidate such collateral. However, the exercising of the 
Fund's right to liquidate such collateral could involve certain costs or 
delays and, to the extent that proceeds from any sale upon a default of the 
obligation to repurchase were less than the repurchase price, the Fund could 
suffer a loss. It is the current policy of the Fund not to invest in 
repurchase agreements that do not mature within seven days of any such 
investment, which together with any other illiquid assets held by the Fund, 
amounts to more than 15% of its net assets. 

STANDARD & POOR'S DEPOSITARY RECEIPTS ("SPDRS") 

   SPDRs are interests in a unit investment trust ("UIT") that may be 
obtained from the UIT or purchased in the secondary market as SPDRs listed on 
the American Stock Exchange. 

   The UIT will issue SPDRs in aggregations of 50,000 known as "Creation 
Units" in exchange for a "Portfolio Deposit" consisting of (a) a portfolio of 
securities substantially similar to the component securities ("Index 
Securities") of the S&P 500 Index, (b) a cash payment equal to a pro rata 
portion of the dividends accrued on the UIT's portfolio securities since the 
last dividend payment by the UIT, net of expenses and liabilities, and (c) a 
cash payment or credit ("Balancing Amount") designed to equalize the net 
asset value of the S&P 500 Index and the net asset value of a Portfolio 
Deposit. 

   SPDRs are not individually redeemable, except upon termination of the UIT. 
To redeem, the Fund must accumulate enough SPDRs to reconstitute a Creation 
Unit. The liquidity of small holdings of SPDRs, therefore, will depend upon 
the existence of a secondary market. Upon redemption of a Creation Unit, the 
Fund will receive Index Securities and cash identical to the Portfolio 
Deposit required of an investor wishing to purchase a Creation Unit that day. 

   The price of SPDRs is derived from and based upon the securities held by 
the UIT. Accordingly, the level of risk involved in the purchase or sale of a 
SPDR is similar to the risk involved in the purchase or sale of traditional 
common stock, with the exception that the pricing mechanism for SPDRs is 
based on a basket of stocks. Disruptions in the markets for the securities 
underlying SPDRs purchased or sold by the Fund could result in losses on 
SPDRs. 

LENDING OF PORTFOLIO SECURITIES 

   Consistent with applicable regulatory requirements, the Fund may lend its 
portfolio securities to brokers, dealers and other financial institutions, 
provided that such loans are callable at any time by the 

                               14           
<PAGE>
Fund (subject to notice provisions described below), and are at all times 
secured by cash or cash equivalents, which are maintained in a segregated 
account pursuant to applicable regulations and that are equal to at least the 
market value, determined daily, of the loaned securities. The advantage of 
such loans is that the Fund continues to receive the income on the loaned 
securities while at the same time earning interest on the cash amounts 
deposited as collateral, which will be invested in short-term obligations. 
The Fund will not lend more than 20% of the value of its total assets. A loan 
may be terminated by the borrower on one business day's notice, or by the 
Fund on four business days' notice. If the borrower fails to deliver the 
loaned securities within four days after receipt of notice, the Fund could 
use the collateral to replace the securities while holding the borrower 
liable for any excess of replacement cost over collateral. As with any 
extensions of credit, there are risks of delay in recovery and in some cases 
even loss of rights in the collateral should the borrower of the securities 
fail financially. However, these loans of portfolio securities will only be 
made to firms deemed by the Fund's management to be creditworthy and when the 
income which can be earned from such loan justifies the attendant risks. Upon 
termination of the loan, the borrower is required to return the securities to 
the Fund. Any gain or loss in the market price during the loan period would 
inure to the Fund. The creditworthiness of firms to which the Fund lends its 
portfolio securities will be monitored on an ongoing basis by the Investment 
Manager pursuant to procedures adopted and reviewed, on an ongoing basis, by 
the Board of Trustees of the Fund. 

   When voting or consent rights which accompany loaned securities pass to 
the borrower, the Fund will follow the policy of calling the loaned 
securities, to be delivered within one day after notice, to permit the 
exercise of such rights if the matters involved would have a material effect 
on the Fund's investment in such loaned securities. The Fund will pay 
reasonable finder's, administrative and custodial fees in connection with a 
loan of its securities. 

   Stock Index Futures Contracts. As discussed in the Prospectus, the Fund 
may invest in stock index futures contracts. An index futures contract sale 
creates an obligation by the Fund, as seller, to deliver cash at a specified 
future time. An index futures contract purchase would create an obligation by 
the Fund, as purchaser, to take delivery of cash at a specified future time. 
Futures contracts on indexes do not require the physical delivery of 
securities, but provide for a final cash settlement on the expiration date 
which reflects accumulated profits and losses credited or debited to each 
party's account. 

   The Fund is required to maintain margin deposits with brokerage firms 
through which it effects index futures contracts in a manner similar to that 
described above for interest rate futures contracts. Currently, the initial 
margin requirements range from 3% to 10% of the contract amount for index 
futures. In addition, due to current industry practice, daily variations in 
gains and losses on open contracts are required to be reflected in cash in 
the form of variation margin payments. The Fund may be required to make 
additional margin payments during the term of the contract. 

   At any time prior to expiration of the futures contract, the Fund may 
elect to close the position by taking an opposite position which will operate 
to terminate the Fund's position in the futures contract. A final 
determination of variation margin is then made, additional cash is required 
to be paid by or released to the Fund and the Fund realizes a loss or a gain. 

   Stock index futures contracts provide for the delivery of an amount of 
cash equal to a specified dollar amount times the difference between the 
stock index value at the open or close of the last trading day of the 
contract and the futures contract price. A futures contract sale is closed 
out by effecting a futures contract purchase for the same aggregate amount of 
the specific type of equity security and the same delivery date. If the sales 
price exceeds the offsetting purchase price, the seller would be paid the 
difference and would realize a gain. If the offsetting purchase price exceeds 
the sale price, the seller would pay the difference and would realize a loss. 
Similarly, a futures contract purchase is closed out by effecting a futures 
contract sale for the same aggregate amount of the specific type of security 
and the same delivery date. If the offsetting sale price exceeds the purchase 
price, the purchaser would realize a gain, whereas if the purchase price 
exceeds the offsetting sale price, the purchaser would realize a loss. There 
is no assurance that the Fund will be able to enter into a closing 
transaction. 

                               15           
<PAGE>
   Limitations on Futures Contracts. The Fund may not enter into futures 
contracts if, immediately thereafter, the amount committed to initial margin 
exceeds 5% of the value of the Fund's total assets, after taking into account 
unrealized gains and unrealized losses on such contracts it has entered into. 
However, there is no overall limitation on the percentage of the Fund's 
assets which may be subject to a hedge position. Except as described above 
and in the Prospectus, there are no other limitations on the use of futures 
and options thereon by the Fund. 

   Risks of Transactions in Futures Contracts. The Fund may sell a futures 
contract to protect against the decline in the value of securities held by 
the Fund. However, it is possible that the futures market may advance and the 
value of securities held in the portfolio of the Fund may decline. If this 
occurred, the Fund would lose money on the futures contract and also 
experience a decline in value of its portfolio securities. However, while 
this could occur for a very brief period or to a very small degree, over time 
the value of a diversified portfolio will tend to move in the same direction 
as the futures contracts. 

   If the Fund purchases a futures contract to hedge against the increase in 
value of securities it intends to buy, and the value of such securities 
decreases, then the Investment Manager may determine not to invest in the 
securities as planned and will realize a loss on the futures contract that is 
not offset by a reduction in the price of the securities. 

   If the Fund maintains a short position in a futures contract, it will 
cover this position by holding, in a segregated account maintained at its 
Custodian, cash, U.S. Government securities or other liquid portfolio 
securities equal in value (when added to any initial or variation margin on 
deposit) to the market value of the securities underlying the futures 
contract or the exercise price of the option. Such a position may also be 
covered by owning the securities underlying the futures contract (in the case 
of a sock index futures contract a portfolio of securities substantially 
replicating the index). 

   In addition, if the Fund holds a long position in a futures contract, it 
will hold cash, U.S. Government securities or other liquid portfolio 
securities equal to the purchase price of the contract or the exercise price 
of the put option (less the amount of initial or variation margin on deposit) 
in a segregated account maintained for the Fund by its Custodian. 
Alternatively, the Fund could cover its long position by purchasing a put 
option on the same futures contract with an exercise price as high or higher 
than the price of the contract held by the Fund. 

   Exchanges limit the amount by which the price of a futures contract may 
move on any day. If the price moves equal the daily limit on successive days, 
then it may prove impossible to liquidate a futures position until the daily 
limit moves have ceased. In the event of adverse price movements, the Fund 
would continue to be required to make daily cash payments of variation margin 
on open futures positions. In such situations, if the Fund has insufficient 
cash, it may have to sell portfolio securities to meet daily variation margin 
requirements at a time when it may be disadvantageous to do so. In addition, 
the Fund may be required to take or make delivery of the instruments 
underlying interest rate futures contracts it holds at a time when it is 
disadvantageous to do so. The inability to close out options and futures 
positions could also have an adverse impact on the Fund's ability to 
effectively hedge its portfolio. 

   In the event of the bankruptcy of a broker through which the Fund engages 
in transactions in futures, the Fund could experience delays and/or losses in 
liquidating open positions purchased or sold through the broker and/or incur 
a loss of all or part of its margin deposits with the broker. Transactions 
are entered into by the Fund only with brokers or financial institutions 
deemed creditworthy by the Investment Manager. 

   There may exist an imperfect correlation between the price movements of 
futures contracts purchased by the Fund and the movements in the prices of 
the securities which are the subject of the contract. If participants in the 
futures market elect to close out their contracts through offsetting 
transactions rather than meet margin deposit requirements, distortions in the 
normal relationship between the securities and futures markets could result. 
Price distortions could also result if investors in futures contracts opt to 
make or take delivery of underlying securities rather than engage in closing 
transactions due to the resultant reduction in the liquidity of the futures 
market. In addition, due to the fact that, from the point of view of 
speculators, the deposit requirements in the futures markets are less 

                               16           
<PAGE>
onerous than margin requirements in the cash market, increased participation 
by speculators in the futures market could cause temporary price distortions. 
Due to the possibility of price distortions in the futures market and because 
of the imperfect correlation between movements in the prices of securities 
and movements in the prices of futures contracts, a correct forecast of stock 
price or interest rate trends by the Investment Manager may still not result 
in a successful hedging transaction. 

   There is no assurance that a liquid secondary market will exist for 
futures contracts in which the Fund may invest. In the event a liquid market 
does not exist, it may not be possible to close out a futures position and, 
in the event of adverse price movements, the Fund would continue to be 
required to make daily cash payments of variation margin. In addition, 
limitations imposed by an exchange or board of trade on which futures 
contracts are traded may compel or prevent the Fund from closing out a 
contract which may result in reduced gain or increased loss to the Fund. The 
absence of a liquid market in futures contracts might cause the Fund to make 
or take delivery of the underlying securities at a time when it may be 
disadvantageous to do so. 

PORTFOLIO TURNOVER 

   It is anticipated that the Fund's portfolio turnover rate will not exceed 
100%. A 100% turnover rate would occur, for example, if 100% of the 
securities held in the Fund's portfolio (excluding all securities whose 
maturities at acquisition were one year or less) were sold and replaced 
within one year. 

INVESTMENT RESTRICTIONS 
- ----------------------------------------------------------------------------- 

   In addition to the investment restrictions enumerated in the Prospectus, 
the investment restrictions listed below have been adopted by the Fund as 
fundamental policies, except as otherwise indicated. Under the Act, a 
fundamental policy may not be changed without the vote of a majority of the 
outstanding voting securities of the Fund, as defined in the Act. Such a 
majority is defined as the lesser of (a) 67% or more of the shares present at 
a meeting of Shareholders, if the holders of 50% of the outstanding shares of 
the Fund are present or represented by proxy or (b) more than 50% of the 
outstanding shares of the Fund. For purposes of the following restrictions: 
(i) all percentage limitations apply immediately after a purchase or initial 
investment; and (ii) any subsequent change in any applicable percentage 
resulting from market fluctuations or other changes in total or net assets 
does not require elimination of any security from the portfolio. 

   The Fund may not: 

     1. Purchase or sell real estate or interests therein (including limited 
    partnership interests), although the Fund may purchase securities of 
    issuers which engage in real estate operations and securities secured by 
    real estate or interests therein. 

     2. Purchase or sell commodities or commodities contracts except that the 
    Fund may purchase or sell index futures contracts. 

     3. Purchase oil, gas or other mineral leases, rights or royalty contracts 
    or exploration or development programs, except that the Fund may invest in 
    the securities of companies which operate, invest in, or sponsor such 
    programs. 

     4. Borrow money, except that the Fund may borrow from a bank for 
    temporary or emergency purposes in amounts not exceeding 5% (taken at the 
    lower of cost or current value) of its total assets (not including the 
    amount borrowed). 

     5.  Pledge its assets or assign or otherwise encumber them except to 
    secure borrowings effected within the limitations set forth in restriction 
    (6). 

     6. Issue senior securities as defined in the Act except insofar as the 
    Fund may be deemed to have issued a senior security by reason of: (a) 
    entering into any repurchase agreement; (b) purchasing or selling futures 
    contracts or options; (c) borrowing money in accordance with restrictions 
    described above; (d) purchasing any securities on a when-issued or delayed 
    delivery basis; or (e) lending portfolio securities. 

                               17           
<PAGE>
     7. Make loans of money or securities, except: (a) by the purchase of debt 
    obligations in which the Fund may invest consistent with its investment 
    objective and policies; (b) by investment in repurchase agreements; or (c) 
    by lending its portfolio securities. 

     8. Make short sales of securities. 

     9. Purchase securities on margin, except for such short-term loans as are 
    necessary for the clearance of portfolio securities. The deposit or 
    payment by the Fund of initial or variation margin in connection with 
    futures contracts or related options is not considered the purchase of a 
    security on margin. 

     10. Invest more than 15% of its total assets in "illiquid securities" 
    (securities for which market quotations are not readily available), 
    restricted securities and repurchase agreements which have a maturity of 
    longer than seven days. 

     11. Engage in the underwriting of securities, except insofar as the Fund 
    may be deemed an underwriter under the Securities Act of 1933 in disposing 
    of a portfolio security. 

     12. Invest for the purpose of exercising control or management of any 
    other issuer, except that the Fund may invest all or substantially all of 
    its assets in another registered investment company having the same 
    investment objective and policies and substantially the same investment 
    restrictions as the Fund. 

PORTFOLIO TRANSACTIONS AND BROKERAGE 
- ----------------------------------------------------------------------------- 

   
   Subject to the general supervision of the Board of Trustees, the 
Investment Manager is responsible for decisions to buy and sell securities 
for the Fund, the selection of brokers and dealers to effect the 
transactions, and the negotiation of brokerage commissions, if any. Purchases 
and sales of securities on a stock exchange are effected through brokers who 
charge a commission for their services. In the over-the-counter market, 
securities are generally traded on a "net" basis with dealers acting as 
principal for their own accounts without a stated commission, although the 
price of the security usually includes a profit to the dealer. The Fund also 
expects that securities will be purchased at times in underwritten offerings 
where the price includes a fixed amount of compensation, generally referred 
to as the underwriter's concession or discount. Futures transactions are 
usually effected through a broker and a commission will be charged. On 
occasion, the Fund may also purchase certain money market instruments 
directly from an issuer, in which case no commissions or discounts are paid. 
During the period September 26, 1997 (commencement of operations) through 
February 28, 1998, the Fund paid a total of $48,266 in brokerage commissions. 
    

   The Investment Manager currently serves as investment manager to a number 
of clients, including other investment companies, and may in the future act 
as investment manager or adviser to others. It is the practice of the 
Investment Manager to cause purchase and sale transactions to be allocated 
among the Fund and others whose assets it manages in such manner as it deems 
equitable. In making such allocations among the Fund and other client 
accounts, various factors may be considered, including the respective 
investment objectives, the relative size of portfolio holdings of the same or 
comparable securities, the availability of cash for investment, the size of 
investment commitments generally held and the opinions of the persons 
responsible for managing the portfolios of the Fund and other client 
accounts. In the case of certain initial and secondary public offerings, the 
Investment Manager may utilize a pro-rata allocation process based on the 
size of the Dean Witter Funds involved and the number of shares available 
from the public offering. 

   The policy of the Fund regarding purchases and sales of securities for its 
portfolio is that primary consideration will be given to obtaining the most 
favorable prices and efficient executions of transactions. Consistent with 
this policy, when securities transactions are effected on a stock exchange, 
the Fund's policy is to pay commissions which are considered fair and 
reasonable without necessarily determining that the lowest possible 
commissions are paid in all circumstances. The Fund believes that a 
requirement always to seek the lowest possible commission cost could impede 
effective portfolio management and preclude the Fund and the Investment 
Manager from obtaining a high quality of brokerage and research services. In 
seeking to determine the reasonableness of brokerage commis- 

                               18           
<PAGE>
sions paid in any transaction, the Investment Manager relies upon its 
experience and knowledge regarding commissions generally charged by various 
brokers and on its judgment in evaluating the brokerage and research services 
received from the broker effecting the transaction. Such determinations are 
necessarily subjective and imprecise, as in most cases an exact dollar value 
for those services is not ascertainable. 

   
   In seeking to implement the Fund's policies, the Investment Manager 
effects transactions with those brokers and dealers who the Investment 
Manager believes provide the most favorable prices and are capable of 
providing efficient executions. If the Investment Manager believes such 
prices and executions are obtainable from more than one broker or dealer, it 
may give consideration to placing portfolio transactions with those brokers 
and dealers who also furnish research and other services to the Fund or the 
Investment Manager. Such services may include, but are not limited to, any 
one or more of the following: information as to the availability of 
securities for purchase or sale; statistical or factual information or 
opinions pertaining to investments; wire services; and appraisals or 
evaluations of portfolio securities. 
    

   The information and services received by the Investment Manager from 
brokers and dealers may be of benefit to the Investment Manager in the 
management of accounts of some of its other clients and may not in all cases 
benefit the Fund directly. While the receipt of such information and services 
is useful in varying degrees and would generally reduce the amount of 
research or services otherwise performed by the Investment Manager and 
thereby reduce its expenses, it is of indeterminable value and the management 
fee paid to the Investment Manager is not reduced by any amount that may be 
attributable to the value of such services. 

   Pursuant to an order of the Securities and Exchange Commission, the Fund 
may effect principal transactions in certain money market instruments with 
DWR. The Fund will limit its transactions with DWR to U.S. Government and 
Government Agency Securities, Bank Money Instruments (i.e., Certificates of 
Deposit and Bankers' Acceptances) and Commercial Paper. Such transactions 
will be effected with DWR only when the price available from DWR is better 
than that available from other dealers. 

   
   Consistent with the policy described above, brokerage transactions in 
securities listed on exchanges or admitted to unlisted trading privileges may 
be effected through DWR, Morgan Stanley & Co. Incorporated ("MS & Co.") and 
other brokers and dealers that are affiliates of the Investment Manager. In 
order for an affiliated broker or dealer to effect any portfolio transactions 
for the Fund, the commissions, fees or other remuneration received by the 
affiliated broker or dealer must be reasonable and fair compared to the 
commissions, fees or other remuneration paid to other brokers in connection 
with comparable transactions involving similar securities being purchased or 
sold on an exchange during a comparable period of time. This standard would 
allow the affiliated broker or dealer to receive no more than the 
remuneration which would be expected to be received by an unaffiliated broker 
in a commensurate arm's-length transaction. Furthermore, the Board of 
Trustees of the Fund, including a majority of the Trustees who are not 
"interested" persons of the Fund, as defined in the Act, have adopted 
procedures which are reasonably designed to provide that any commissions, 
fees or other remuneration paid to an affiliated broker or dealer are 
consistent with the foregoing standard. The Fund does not reduce the 
management fee it pays to the Investment Manager by any amount of the 
brokerage commissions it may pay to an affiliated broker or dealer. During 
the period September 26, 1997 (commencement of operations) through February 
28, 1998, the Fund paid no brokerage commissions to MS & Co. or DWR. 
    

THE DISTRIBUTOR 
- ----------------------------------------------------------------------------- 

   
   As discussed in the Prospectus, shares of the Fund are distributed by Dean 
Witter Distributors Inc. (the "Distributor"). The Distributor has entered 
into a selected dealer agreement with DWR, which through its own sales 
organization sells shares of the Fund. In addition, the Distributor may enter 
into selected dealer agreements with other selected broker-dealers. The 
Distributor, a Delaware corporation, is a wholly-owned subsidiary of MSDW. 
The Board of Trustees of the Fund including a majority of the Trustees who 
are not, and were not at the time they voted, interested persons of the Fund, 
as defined in the Act ( the "Independent Trustees"), approved, at their 
meeting held on July 23, 1997, a Distribution 
    

                               19           
<PAGE>
Agreement appointing the Distributor as exclusive distributor of the Fund's 
shares and providing for the Distributor to bear distribution expenses not 
borne by the Fund. By its terms, the Distribution Agreement has an initial 
term ending April 30, 1998, and provides that it will remain in effect from 
year to year thereafter if approved by the Board. 

   The Distributor bears all expenses it may incur in providing services 
under the Distribution Agreement. Such expenses include the payment of 
commissions for sales of the Fund's shares and incentive compensation to 
account executives. The Distributor also pays certain expenses in connection 
with the distribution of the Fund's shares, including the costs of preparing, 
printing and distributing advertising or promotional materials, and the costs 
of printing and distributing prospectuses and supplements thereto used in 
connection with the offering and sale of the Fund's shares. The Fund bears 
the costs of initial typesetting, printing and distribution of prospectuses 
and supplements thereto to shareholders. The Fund also bears the costs of 
registering the Fund and its shares under federal securities laws and pays 
filing fees in accordance with state securities laws. The Fund and the 
Distributor have agreed to indemnify each other against certain liabilities, 
including liabilities under the Securities Act of 1933, as amended. Under the 
Distribution Agreement, the Distributor uses its best efforts in rendering 
services to the Fund, but in the absence of willful misfeasance, bad faith, 
gross negligence or reckless disregard of its obligations, the Distributor is 
not liable to the Fund or any of its shareholders for any error of judgment 
or mistake of law or for any act or omission or for any losses sustained by 
the Fund or its shareholders. 

PLAN OF DISTRIBUTION 

   
   The Fund has adopted a Plan of Distribution pursuant to Rule 12b-1 under 
the Act (the "Plan") pursuant to which each Class, other than Class D, pays 
the Distributor compensation accrued daily and payable monthly at the annual 
rate of 0.25% of the average daily net assets of Class A and 1.0% of the 
average daily net assets of each of Class B and Class C. The Distributor 
receives the proceeds of front-end sales charges and of contingent deferred 
sales charges imposed on certain redemptions of shares, which are separate 
and apart from payments made pursuant to the Plan (see "Purchase of Fund 
Shares" in the Prospectus). The Distributor has informed the Fund that for 
the fiscal period ended February 28, 1998 it and/or DWR received (a) 
approximately $1,233, $176,043 and $2,465 in contingent deferred sales 
charges from Class A, Class B and Class C, respectively, and (b) 
approximately $317,745 in front-end sales charges from Class A, none of which 
was retained by the Distributor. 
    

   The Distributor has informed the Fund that the entire fee payable by Class 
A and a portion of the fees payable by each of Class B and Class C each year 
pursuant to the Plan equal to 0.25% of such Class's average daily net assets 
are currently each characterized as a "service fee" under the Rules of the 
Association of the National Association of Securities Dealers, Inc. (of which 
the Distributor is a member). The "service fee" is a payment made for 
personal service and/or the maintenance of shareholder accounts. The 
remaining portion of the Plan fees payable by a Class, if any, is 
characterized as an "asset-based sales charge" as such is defined by the 
aforementioned Rules of the Association. 

   The Plan was adopted by a vote of the Trustees of the Fund on July 23, 
1997 at a meeting of the Trustees called for the purpose of voting on such 
Plan. The vote included the vote of a majority of the Trustees of the Fund 
who are not "interested persons" of the Fund (as defined in the Act) and who 
have no direct or indirect financial interest in the operation of the Plan 
(the "Independent 12b-1 Trustees"). In making their decision to adopt the 
Plan, the Trustees requested from the Distributor and received such 
information as they deemed necessary to make an informed determination as to 
whether or not adoption of the Plan was in the best interests of the 
shareholders of the Fund. After due consideration of the information 
received, the Trustees, including the Independent 12b-1 Trustees, determined 
that adoption of the Plan would benefit the shareholders of the Fund. 
InterCapital, as then sole shareholder of the Fund, approved the Plan on July 
28, 1997, whereupon the Plan went into effect. 

   Under its terms, the Plan will continue in effect until April 30, 1998 and 
will remain in effect from year to year thereafter, provided such continuance 
is approved annually by a vote of the Trustees in the manner described above. 
Under the Plan and as required by Rule 12b-1, the Trustees will receive and 
review promptly after the end of each fiscal quarter a written report 
provided by the Distributor of the 

                               20           
<PAGE>
   
amounts expended by the Distributor under the Plan and the purpose for which 
such expenditures were made. The following chart shows the amounts accrued 
under the Plan by each Class of shares for the period September 26, 1997 
(commencement of operations) through February 28, 1998 and the percentage of 
the net assets of each Class represented by such amounts. 
    

   
<TABLE>
<CAPTION>
              AMOUNT    PERCENTAGE OF NET 
             ACCRUED     ASSETS OF CLASS 
           ----------- ----------------- 
<S>        <C>         <C>
Class A...  $   12,848        0.24% 
Class B...   1,127,620        1.00 
Class C...      75,709        1.00 
</TABLE>
    

   
- ------------ 
    

   The Plan was adopted in order to permit the implementation of the Fund's 
method of distribution. Under this distribution method the Fund offers four 
Classes of shares, each with a different distribution arrangement as set 
forth in the Prospectus. 

   
   With respect to Class A shares, DWR compensates its account executives by 
paying them, from proceeds of the front-end sales charge, commissions for the 
sale of Class A shares, currently a gross sales credit of up to 5.0% of the 
amount sold (except as provided in the following sentence) and an annual 
residual commission, currently a residual of up to 0.25% of the current value 
of the respective accounts for which they are the account executives or 
dealers of record in all cases. On orders of $1 million or more (for which no 
sales charge was paid) or net asset value purchases by employer-sponsored 
401(k) and other plans qualified under Section 401(a) of the Internal Revenue 
Code ("Qualified Retirement Plans") for which Morgan Stanley Dean Witter 
Trust FSB ("MSDW Trust") serves as Trustee or DWR's Retirement Plan Services 
serves as recordkeeper pursuant to a written Recordkeeping Services 
Agreement, the Investment Manager compensates DWR's account executives by 
paying them, from its own funds, a gross sales credit of 1.0% of the amount 
sold. 

   With respect to Class B shares, DWR compensates its account executives by 
paying them, from its own funds, commissions for the sale of Class B shares, 
currently a gross sales credit of up to 5.0% of the amount sold (except as 
provided in the following sentence) and an annual residual commission, 
currently a residual of up to 0.25% of the current value of the respective 
accounts for which they are the account executives of record in all cases. In 
the case of Class B shares purchased by Qualified Retirement Plans for which 
MSDW Trust serves as Trustee or DWR's Retirement Plan Services serves as 
recordkeeper pursuant to a written Recordkeeping Services Agreement, DWR 
compensates its account executives by paying them, from its own funds, a 
gross sales credit of 3.0% of the amount sold. 
    

   With respect to Class C shares, DWR compensates its account executives by 
paying them, from its own funds, commissions for the sale of Class C shares, 
currently a gross sales credit of up to 1.0% of the amount sold and an annual 
residual commission, currently a residual of up to 1.0% of the current value 
of the respective accounts for which they are the account executives of 
record. 

   With respect to Class D shares other than shares held by participants in 
the InterCapital mutual fund asset allocation program, the Investment Manager 
compensates DWR's account executives by paying them, from its own funds, 
commissions for the sale of Class D shares, currently a gross sales credit of 
up to 1.0% of the amount sold. There is a chargeback of 100% of the amount 
paid if the Class D shares are redeemed in the first year and a chargeback of 
50% of the amount paid if the Class D shares are redeemed in the second year 
after purchase. The Investment Manager also compensates DWR's account 
executives by paying them, from its own funds, an annual residual commission, 
currently a residual of up to 0.10% of the current value of the respective 
accounts for which they are the account executives of record (not including 
accounts of participants in the InterCapital mutual fund asset allocation 
program). 

   The gross sales credit is a charge which reflects commissions paid by DWR 
to its account executives and Fund associated distribution-related expenses, 
including sales compensation and overhead and other branch office 
distribution-related expenses including: (a) the expenses of operating DWR's 
branch offices in connection with the sale of Fund shares, including lease 
costs, the salaries and 

                               21           
<PAGE>
employee benefits of operations and sales support personnel, utility costs, 
communications costs and the costs of stationery and supplies; (b) the costs 
of client sales seminars; (c) travel expenses of mutual fund sales 
coordinators to promote the sale of Fund shares; and (d) other expenses 
relating to branch promotion of Fund shares sales. Payments may also be made 
with respect to distribution expenses incurred in connection with the 
distribution of shares, including personal services to shareholders with 
respect to holdings of such shares, of an investment company whose assets are 
acquired by the Fund in a tax-free reorganization. The distribution fee that 
the Distributor receives from the Fund under the Plan, in effect, offsets 
distribution expenses incurred on behalf of the Fund and, in the case of 
Class B shares, opportunity costs, such as the gross sales credit and an 
assumed interest charge thereon ("carrying charge"). In the Distributor's 
reporting of the distribution expenses to the Fund, in the case of Class B 
shares, such assumed interest (computed at the "broker's call rate") has been 
calculated on the gross sales credit as it is reduced by amounts received by 
the Distributor under the Plan and any contingent deferred sales charges 
received by the Distributor upon redemption of shares of the Fund. No other 
interest charge is included as a distribution expense in the Distributor's 
calculation of its distribution costs for this purpose. The broker's call 
rate is the interest rate charged to securities brokers on loans secured by 
exchange-listed securities. 

   
   Each Class paid 100% of the amounts accrued under the Plan with respect to 
the Class for the period September 26, 1997 (commencement of operations) 
through February 28, 1998 to the Distributor. The Distributor and DWR 
estimate that they have spent, pursuant to the Plan, $16,764,482 on behalf of 
Class B since the inception of the Plan. It is estimated that this amount was 
spent in approximately the following ways: (i) 6.29% 
($1,054,568)--advertising and promotional expenses; (ii) 0.84% 
($140,874)--printing of prospectuses for distribution to other than current 
shareholders; and (iii) 92.87% ($15,569,040)--other expenses, including the 
gross sales credit and the carrying charge, of which 1.64% ($255,121) 
represents carrying charges, 40.23% ($6,263,393) represents commission 
credits to DWR branch offices for payments of commissions to account 
executives and 58.13% ($9,050,526) represents overhead and other branch 
office distribution-related expenses. The amounts accrued by Class A and 
Class C for distribution during the period were for expenses which relate to 
compensation of sales personnel and associated overhead expenses. 

   The Fund is authorized to reimburse expenses incurred or to be incurred in 
promoting the distribution of the Fund's Class A and Class C shares and in 
servicing shareholder accounts. Reimbursement will be made through payments 
at the end of each month. The amount of each monthly payment may in no event 
exceed an amount equal to a payment at the annual rate of 0.25%, in the case 
of Class A, and 1.0%, in the case of Class C, of the average net assets of 
the respective Class during the month. No interest or other financing 
charges, if any, incurred on any distribution expenses on behalf of Class A 
and Class C will be reimbursable under the Plan. With respect to Class A, in 
the case of all expenses other than expenses representing the service fee, 
and, with respect to Class C, in the case of all expenses other than expenses 
representing a gross sales credit or a residual to account executives, such 
amounts shall be determined at the beginning of each calendar quarter by the 
Trustees, including, a majority of the Independent 12b-1 Trustees. Expenses 
representing the service fee (for Class A) or a gross sales credit or a 
residual to account executives (for Class C) may be reimbursed without prior 
determination. In the event that the Distributor proposes that monies shall 
be reimbursed for other than such expenses, then in making quarterly 
determinations of the amounts that may be reimbursed by the Fund, the 
Distributor will provide and the Trustees will review a quarterly budget of 
projected distribution expenses to be incurred on behalf of the Fund, 
together with a report explaining the purposes and anticipated benefits of 
incurring such expenses. The Trustees will determine which particular 
expenses, and the portions thereof, that may be borne by the Fund, and in 
making such a determination shall consider the scope of the Distributor's 
commitment to promoting the distribution of the Fund's Class A and Class C 
shares. 

   In the case of Class B shares, at any given time, the expenses in 
distributing shares of the Fund may be more or less than the total of (i) the 
payments made by the Fund pursuant to the Plan and (ii) the proceeds of 
contingent deferred sales charges paid by investors upon redemption of 
shares. The 

                               22           
    
<PAGE>
   
Distributor has advised the Fund that in the case of Class B shares the 
excess distribution expenses including the carrying charge designed to 
approximate the opportunity costs incurred by DWR which arise from it having 
advanced monies without having received the amount of any sales charges 
imposed at the time of sale of the Fund's Class B shares, totaled $15,470,964 
as of February 28, 1998. Because there is no requirement under the Plan that 
the Distributor be reimbursed for all expenses for all expenses with respect 
to Class B shares or any requirement that the Plan be continued from year to 
year, this excess amount does not constitute a liability of the Fund. 
Although there is no legal obligation for the Fund to pay distribution 
expenses in excess of payments made under the Plan and the proceeds of 
contingent deferred sales charges paid by investors upon redemption of 
shares, if for any reason the Plan is terminated, the Trustees will consider 
at that time the manner in which to treat such expenses. Any cumulative 
expenses incurred, but not yet recovered through distribution fees or 
contingent deferred sales charges, may or may not be recovered through future 
distribution fees or contingent deferred sales charges. 
    

   No interested person of the Fund nor any Trustee of the Fund who is not an 
interested person of the Fund, as defined in the Act, has any direct or 
indirect financial interest in the operation of the Plan except to the extent 
that the Distributor, InterCapital, DWSC and DWR or certain of their 
employees may be deemed to have such an interest as a result of benefits 
derived from the successful operation of the Plan or as a result of receiving 
a portion of the amounts expended thereunder by the Fund. 

   The Plan may not be amended to increase materially the amount to be spent 
for the services described therein without approval of the shareholders of 
the affected Class of the Fund, and all material amendments of the Plan must 
also be approved by the Trustees in the manner described above. The Plan may 
be terminated at any time, without payment of any penalty, by vote of a 
majority of the Independent 12b-1 Trustees or by a vote of a majority of the 
outstanding voting securities of the Fund (as defined in the Act) or not more 
than thirty days' written notice to any other party to the Plan. So long as 
the Plan is in effect, the election and nomination of Independent 12b-1 
Trustees shall be committed to the discretion of the Independent 12b-1 
Trustees. 

DETERMINATION OF NET ASSET VALUE 
- ----------------------------------------------------------------------------- 

   As stated in the Prospectus, short-term securities with remaining 
maturities of sixty days or less at the time of purchase are valued at 
amortized cost, unless the Trustees determine such does not reflect the 
securities' market value, in which case these securities will be valued at 
their fair value as determined by the Trustees. Other short-term debt 
securities will be valued on a mark-to-market basis until such time as they 
reach a remaining maturity of sixty days, whereupon they will be valued at 
amortized cost using their value on the 61st day unless the Trustees 
determine such does not reflect the securities' market value, in which case 
these securities will be valued at their fair value as determined by the 
Trustees. All other securities and other assets are valued at their fair 
value as determined in good faith under procedures established by and under 
the supervision of the Trustees. 

   
   The net asset value per share for each Class of shares of the Fund is 
determined once daily at 4:00 p.m. New York time (or, on days when the New 
York Stock Exchange closes prior to 4:00 p.m., at such earlier time), on each 
day that the New York Stock Exchange is open. The New York Stock Exchange 
currently observes the following holidays: New Year's Day, Reverend Dr. 
Martin Luther King, Jr. Day, Presidents' Day, Good Friday, Memorial Day, 
Independence Day, Labor Day, Thanksgiving Day, and Christmas Day. 
    

                               23           
<PAGE>
PURCHASE OF FUND SHARES 
- ----------------------------------------------------------------------------- 

   As discussed in the Prospectus, the Fund offers four Classes of shares as 
follows: 

INITIAL SALES CHARGE ALTERNATIVE--CLASS A SHARES 

   Class A shares are sold to investors with an initial sales charge that 
declines to zero for larger purchases; however, Class A shares sold without 
an initial sales charge are subject to a contingent deferred sales charge 
("CDSC") of 1.0% if redeemed within one year of purchase, except in the 
circumstances discussed in the Prospectus. 

   Right of Accumulation. As discussed in the Prospectus, investors may 
combine the current value of shares purchased in separate transactions for 
purposes of benefitting from the reduced sales charges available for 
purchases of shares of the Fund totalling at least $25,000 in net asset 
value. For example, if any person or entity who qualifies for this privilege 
holds Class A shares of the Fund and/or other Dean Witter Funds that are 
multiple class funds ("Dean Witter Multi-Class Funds") or shares of other 
Dean Witter Funds sold with a front-end sales charge purchased at a price 
including a front-end sales charge having a current value of $5,000, and 
purchases $20,000 of additional shares of the Fund, the sales charge 
applicable to the $20,000 purchase would be 4.75% of the offering price. 

   
   The Distributor must be notified by the selected broker-dealer or the 
shareholder at the time a purchase order is placed that the purchase 
qualifies for the reduced charge under the Right of Accumulation. Similar 
notification must be made in writing by the selected broker-dealer or 
shareholder when such an order is placed by mail. The reduced sales charge 
will not be granted if: (a) such notification is not furnished at the time of 
the order; or (b) a review of the records of the Distributor or Morgan 
Stanley Dean Witter Trust FSB (the "Transfer Agent") fails to confirm the 
investor's represented holdings. 
    

   Letter of Intent. As discussed in the Prospectus, reduced sales charges 
are available to investors who enter into a written Letter of Intent 
providing for the purchase, within a thirteen-month period, of Class A shares 
of the Fund from the Distributor or from a single Selected Broker-Dealer. 

   A Letter of Intent permits an investor to establish a total investment 
goal to be achieved by any number of purchases over a thirteen-month period. 
Each purchase of Class A shares made during the period will receive the 
reduced sales commission applicable to the amount represented by the goal, as 
if it were a single purchase. A number of shares equal in value to 5% of the 
dollar amount of the Letter of Intent will be held in escrow by the Transfer 
Agent, in the name of the shareholder. The initial purchase under a Letter of 
Intent must be equal to at least 5% of the stated investment goal. 

   The Letter of Intent does not obligate the investor to purchase, nor the 
Fund to sell, the indicated amount. In the event the Letter of Intent goal is 
not achieved within the thirteen-month period, the investor is required to 
pay the difference between the sales charge otherwise applicable to the 
purchases made during this period and sales charges actually paid. Such 
payment may be made directly to the Distributor or, if not paid, the 
Distributor is authorized by the shareholder to liquidate a sufficient number 
of his or her escrowed shares to obtain such difference. 

   If the goal is exceeded and purchases pass the next sales charge level, 
the sales charge on the entire amount of the purchase that results in passing 
that level and on subsequent purchases will be subject to further reduced 
sales charges in the same manner as set forth above under "Right of 
Accumulation," but there will be no retroactive reduction of sales charges on 
previous purchases. For the purpose of determining whether the investor is 
entitled to a further reduced sales charge applicable to purchases at or 
above a sales charge level which exceeds the stated goal of a Letter of 
Intent, the cumulative current net asset value of any shares owned by the 
investor in any other Dean Witter Funds held by the shareholder which were 
previously purchased at a price including a front-end sales charge (including 
shares of the Fund and other Dean Witter Funds acquired in exchange for those 
shares, and including in each case shares acquired through reinvestment of 
dividends and distributions) will be 

                               24           
<PAGE>
added to the cost or net asset value of shares of the Fund owned by the 
investor. However, shares of "Exchange Funds" (see "Shareholder 
Services--Exchange Privilege") and the purchase of shares of other Dean 
Witter Funds will not be included in determining whether the stated goal of a 
Letter of Intent has been reached. 

   At any time while a Letter of Intent is in effect, a shareholder may, by 
written notice to the Distributor, increase the amount of the stated goal. In 
that event, only shares purchased during the previous 90-day period and still 
owned by the shareholder will be included in the new sales charge reduction. 
The 5% escrow and minimum purchase requirements will be applicable to the new 
stated goal. Investors electing to purchase shares of the Fund pursuant to a 
Letter of Intent should carefully read such Letter of Intent. 

CONTINGENT DEFERRED SALES CHARGE ALTERNATIVE--CLASS B SHARES 

   
   Class B shares are sold without an initial sales charge but are subject to 
a CDSC payable upon most redemptions within six years after purchase. As 
stated in the Prospectus, a CDSC will be imposed on any redemption by an 
investor if after such redemption the current value of the investor's Class B 
shares of the Fund is less than the dollar amount of all payments by the 
shareholder for the purchase of Class B shares during the preceding six years 
(or, in the case of shares held by certain Qualified Retirement Plans, three 
years). However, no CDSC will be imposed to the extent that the net asset 
value of the shares redeemed does not exceed: (a) the current net asset value 
of shares purchased more than six years (or, in the case of shares held by 
certain Qualified Retirement Plans, three years) prior to the redemption, 
plus (b) the current net asset value of shares purchased through reinvestment 
of dividends or distributions of the Fund or another Dean Witter Fund (see 
"Shareholder Services--Targeted Dividends"), plus (c) the current net asset 
value of shares acquired in exchange for (i) shares of Dean Witter front-end 
sales charge funds, or (ii) shares of other Dean Witter Funds for which 
shares of front-end sales charge funds have been exchanged (see "Shareholder 
Services--Exchange Privilege"), plus (d) increases in the net asset value of 
the investor's shares above the total amount of payments for the purchase of 
Fund shares made during the preceding six (three) years. The CDSC will be 
paid to the Distributor. 

   In determining the applicability of the CDSC to each redemption, the 
amount which represents an increase in the net asset value of the investor's 
shares above the amount of the total payments for the purchase of shares 
within the last six years (or, in the case of shares held by certain 
Qualified Retirement Plans, three years) will be redeemed first. In the event 
the redemption amount exceeds such increase in value, the next portion of the 
amount redeemed will be the amount which represents the net asset value of 
the investor's shares purchased more than six (three) years prior to the 
redemption and/or shares purchased through reinvestment of dividends or 
distributions and/or shares acquired in exchange for shares of Dean Witter 
front-end sales charge funds, or for shares of other Dean Witter funds for 
which shares of front-end sales charge funds have been exchanged. A portion 
of the amount redeemed which exceeds an amount which represents both such 
increase in value and the value of shares purchased more than six years (or, 
in the case of shares held by certain Qualified Retirement Plans, three 
years) prior to the redemption and/or shares purchased through reinvestment 
of dividends or distributions and/or shares acquired in the above-described 
exchanges will be subject to a CDSC. 
    

   The amount of the CDSC, if any, will vary depending on the number of years 
from the time of payment for the purchase of Class B shares of the Fund until 
the time of redemption of such shares. For purposes of determining the number 
of years from the time of any payment for the purchase of shares, all 
payments made during a month will be aggregated and deemed to have been made 
on the last day of the month. The following table sets forth the rates of the 
CDSC applicable to most Class B shares of the Fund: 

                               25           
<PAGE>
<TABLE>
<CAPTION>
         YEAR SINCE 
          PURCHASE             CDSC AS A PERCENTAGE 
        PAYMENT MADE            OF AMOUNT REDEEMED 
- ---------------------------  ------------------------ 
<S>                          <C>
First ......................            5.0% 
Second .....................            4.0% 
Third ......................            3.0% 
Fourth .....................            2.0% 
Fifth ......................            2.0% 
Sixth ......................            1.0% 
Seventh and thereafter  ....            None 

</TABLE>

   
   The following table sets forth the rates of the CDSC applicable to Class B 
shares of the Fund purchased by Qualified Retirement Plans for which MSDW 
Trust serves as Trustee or DWR's Retirement Plan Services serves as 
recordkeeper pursuant to a written Recordkeeping Services Agreement: 
    

<TABLE>
<CAPTION>
        YEAR SINCE 
         PURCHASE            CDSC AS A PERCENTAGE 
       PAYMENT MADE           OF AMOUNT REDEEMED 
- -------------------------  ------------------------ 
<S>                        <C>
First ....................            2.0% 
Second ...................            2.0% 
Third ....................            1.0% 
Fourth and thereafter ....            None 
</TABLE>

   
   In determining the rate of the CDSC, it will be assumed that a redemption 
is made of shares held by the investor for the longest period of time within 
the applicable six-year or three-year period. This will result in any such 
CDSC being imposed at the lowest possible rate. The CDSC will be imposed, in 
accordance with the table shown above, on any redemptions within six years 
(or, in the case of shares held by certain Qualified Retirement Plans, three 
years) of purchase which are in excess of these amounts and which redemptions 
do not qualify for waiver of the CDSC, as described in the Prospectus. 
    

LEVEL LOAD ALTERNATIVE--CLASS C SHARES 

   Class C shares are sold without a sales charge but are subject to a CDSC 
of 1.0% on most redemptions made within one year after purchase, except in 
the circumstances discussed in the Prospectus. 

NO LOAD ALTERNATIVE--CLASS D SHARES 

   Class D shares are offered without any sales charge on purchase or 
redemption. Class D shares are offered only to those persons meeting the 
qualifications set forth in the Prospectus. 

SHAREHOLDER SERVICES 
- ----------------------------------------------------------------------------- 

   Upon the purchase of shares of the Fund, a Shareholder Investment Account 
is opened for the investor on the books of the Fund and maintained by the 
Transfer Agent. This is an open account in which shares owned by the investor 
are credited by the Transfer Agent in lieu of issuance of a share 
certificate. If a share certificate is desired, it must be requested in 
writing for each transaction. Certificates are issued only for full shares 
and may be redeposited in the account at any time. There is no charge to the 
investor for issuance of a certificate. Whenever a shareholder instituted 
transaction takes place in the Shareholder Investment Account, the 
shareholder will be mailed a confirmation of the transaction from the Fund or 
from DWR or other selected broker-dealer. 

   Automatic Investment of Dividends and Distributions. As stated in the 
Prospectus, all income dividends and capital gains distributions are 
automatically paid in full and fractional shares of the applicable Class of 
the Fund, unless the shareholder requests that they be paid in cash. Each 
purchase of shares of the Fund is made upon the condition that the Transfer 
Agent is thereby automatically appointed as agent of the investor to receive 
all dividends and capital gains distributions on shares owned by the 
investor. Such dividends and distributions will be paid, at the net asset 
value per share, in shares of the applicable Class of the Fund (or in cash if 
the shareholder so requests) as of the close of 

                               26           
<PAGE>
   
business on the record date. At any time an investor may request the Transfer 
Agent, in writing, to have subsequent dividends and/or capital gains 
distributions paid to him or her in cash rather than shares. To assure 
sufficient time to process the change, such request should be received by the 
Transfer Agent at least five business days prior to the record date of the 
dividend or distribution. In the case of recently purchased shares for which 
registration instructions have not been received on the record date, cash 
payments will be made to DWR or other selected broker-dealer, and will be 
forwarded to the shareholder, upon the receipt of proper instructions. It has 
been and remains the Fund's policy and practice that, if checks for dividends 
or distributions paid in cash remain uncashed, no interest will accrue on 
amounts represented by such uncashed checks. 
    

   Targeted Dividends (Service Mark) . In states where it is legally 
permissible, shareholders may also have all income dividends and capital 
gains distributions automatically invested in shares of any Class of an 
open-end Dean Witter Fund other than Dean Witter S&P 500 Index Fund or in 
another Class of Dean Witter S&P 500 Index Fund. Such investment will be made 
as described above for automatic investment in shares of the applicable Class 
of the Fund, at the net asset value per share of the selected Dean Witter 
Fund as of the close of business on the payment date of the dividend or 
distribution and will begin to earn dividends, if any, in the selected Dean 
Witter Fund the next business day. To participate in the Targeted Dividends 
program, shareholders should contact their DWR or other selected 
broker-dealer account executive or the Transfer Agent. Shareholders of the 
Fund must be shareholders of the selected Class of the Dean Witter Fund 
targeted to receive investments from dividends at the time they enter the 
Targeted Dividends program. Investors should review the prospectus of the 
targeted Dean Witter Fund before entering the program. 

   
   EasyInvest (Service Mark). Shareholders may subscribe to EasyInvest, an 
automatic purchase plan which provides for any amount from $100 to $5,000 to 
be transferred automatically from a checking or savings account or following 
redemption of shares of a Dean Witter money market fund, on a semi-monthly, 
monthly or quarterly basis, to the Transfer Agent for investment in shares of 
the Fund. Shares purchased through EasyInvest will be added to the 
shareholder's existing account at the net asset value calculated the same 
business day the transfer of funds is effected (subject to any applicable 
sales charges). Shares of the Dean Witter money market funds redeemed in 
connection with EasyInvest are redeemed on the business day preceding the 
transfer of funds. For further information or to subscribe to EasyInvest, 
shareholders should contact their DWR or other selected broker-dealer account 
executive or the Transfer Agent. 
    

   Investment of Dividends or Distributions Received in Cash. As discussed in 
the Prospectus, any shareholder who receives a cash payment representing a 
dividend or distribution may invest such dividend or distribution in shares 
of the applicable Class at net asset value, without the imposition of a CDSC 
upon redemption, by returning the check or the proceeds to the Transfer Agent 
within thirty days after the payment date. If the shareholder returns the 
proceeds of a dividend or distribution, such funds must be accompanied by a 
signed statement indicating that the proceeds constitute a dividend or 
distribution to be invested. Such investment will be made at the net asset 
value per share next determined after receipt of the check or proceeds by the 
Transfer Agent. 

   Systematic Withdrawal Plan. As discussed in the Prospectus, a systematic 
withdrawal plan (the "Withdrawal Plan") is available for shareholders who own 
or purchase shares of the Fund having a minimum value of $10,000 based upon 
the then current net asset value. The Withdrawal Plan provides for monthly or 
quarterly (March, June, September and December) checks in any dollar amount, 
not less then $25, or in any whole percentage of the account balance, on an 
annualized basis. Any applicable CDSC will be imposed on shares redeemed 
under the Withdrawal Plan (see "Purchase of Fund Shares"). Therefore, any 
shareholder participating in the Withdrawal Plan will have sufficient shares 
redeemed from his or her account so that the proceeds (net of any applicable 
CDSC) to the shareholder will be the designated monthly or quarterly amount. 

   The Transfer Agent acts as agent for the shareholder in tendering to the 
Fund for redemption sufficient full and fractional shares to provide the 
amount of the periodic withdrawal payment designated in the application. The 
shares will be redeemed at their net asset value determined, at the 
shareholder's 

                               27           
<PAGE>
option, on the tenth or twenty-fifth day (or next following business day) of 
the relevant month or quarter and normally a check for the proceeds will be 
mailed by the Transfer Agent, or amounts credited to a shareholder's DWR 
brokerage account, within five business days after the date of redemption. 
The Withdrawal Plan may be terminated at any time by the Fund. 

   Withdrawal Plan payments should not be considered as dividends, yields or 
income. If periodic withdrawal plan payments continuously exceed net 
investment income and net capital gains, the share holder's original 
investment will be correspondingly reduced and ultimately exhausted. Each 
withdrawal constitutes a redemption of shares and any gain or loss realized 
must be recognized for federal income tax purposes. Although the shareholder 
may make additional investments of $2,500 or more under the Withdrawal Plan, 
withdrawals made concurrently with purchases of additional shares may be 
inadvisable because of sales charges which may be applicable to purchases or 
redemptions of shares (see "Purchase of Fund Shares"). 

   Any shareholder who wishes to have payments under the Withdrawal Plan made 
to a third party or sent to an address other than the one listed on the 
account must send complete written instructions to the Transfer Agent to 
enroll in the Withdrawal Plan. The shareholder's signature on such 
instructions must be guaranteed by an eligible guarantor acceptable to the 
Transfer Agent (shareholders should contact the Transfer Agent for a 
determination as to whether a particular institution is such an eligible 
guarantor). A shareholder may, at any time, change the amount and interval of 
withdrawal payments through his or her Account Executive or by written 
notification to the Transfer Agent. In addition, the party and/or the address 
to which checks are mailed may be changed by written notification to the 
Transfer Agent, with signature guarantees required in the manner described 
above. The shareholder may also terminate the Withdrawal Plan at any time by 
written notice to the Transfer Agent. In the event of such termination, the 
account will be continued as a regular shareholder investment account. The 
shareholder may also redeem all or part of the shares held in the Withdrawal 
Plan account (see "Redemptions and Repurchases" in the Prospectus) at any 
time. Shareholders wishing to enroll in the Withdrawal Plan should contact 
their account executive or the Transfer Agent. 

   Direct Investments through Transfer Agent. As discussed in the Prospectus, 
shareholders may make additional investments in any Class of shares of the 
Fund for which they qualify at any time by sending a check in any amount, not 
less than $100, payable to Dean Witter S&P 500 Index Fund, and indicating the 
selected Class, directly to the Fund's Transfer Agent. In the case of Class A 
shares, after deduction of any applicable sales charge, the balance will be 
applied to the purchase of Fund shares, and, in the case of shares of the 
other Classes, the entire amount will be applied to the purchase of Fund 
shares, at the net asset value per share next computed after receipt of the 
check or purchase payment by the Transfer Agent. The shares so purchased will 
be credited to the investor's account. 

EXCHANGE PRIVILEGE 

   
   As discussed in the Prospectus, the Fund makes available to its 
shareholders an Exchange Privilege whereby shareholders of each Class of 
shares of the Fund may exchange their shares for shares of the same Class of 
shares of any other Dean Witter Multi-Class Fund without the imposition of 
any exchange fee. Shares may also be exchanged for share of any of the 
following funds: Dean Witter Short-Term U.S. Treasury Trust, Dean Witter 
Limited Term Municipal Trust, Dean Witter Short-Term Bond Fund, Dean Witter 
Intermediate Term U.S. Treasury Trust and five Dean Witter Funds which are 
money market funds (the foregoing nine funds are hereinafter referred to as 
the "Exchange Funds"). Class A shares may also be exchanged for shares of 
Dean Witter Multi-State Municipal Series Trust and Dean Witter Hawaii 
Municipal Trust, which are Dean Witter Funds sold with a front-end sales 
charge ("FSC Funds"). Class B shares may also be exchanged for shares of Dean 
Witter Global Short-Term Income Fund Inc. ("Global Short-Term"), which is a 
Dean Witter Fund offered with a CDSC. Exchanges may be made after the shares 
of the Fund acquired by purchase (not by exchange or dividend reinvestment) 
have been held for thirty days. There is no waiting period for exchanges of 
shares acquired by exchange or dividend reinvestment. An exchange will be 
treated for federal income tax purposes the same as a repurchase or 
redemption of shares, on which the shareholder may realize a capital gain or 
loss. 
    

                               28           
<PAGE>
   Any new account established through the Exchange Privilege will have the 
same registration and cash dividend or dividend reinvestment plan as the 
present account, unless the Transfer Agent receives written notification to 
the contrary. For telephone exchanges, the exact registration of the existing 
account and the account number must be provided. 

   Any shares held in certificate form cannot be exchanged but must be 
forwarded to the Transfer Agent and deposited into the shareholder's account 
before being eligible for exchange. (Certificates mailed in for deposit 
should not be endorsed.) 

   
   As described below, and in the Prospectus under the caption "Purchase of 
Fund Shares," a CDSC may be imposed upon a redemption, depending on a number 
of factors, including the number of years from the time of purchase until the 
time of redemption or exchange ("holding period"). When shares of a Dean 
Witter Multi-Class Fund or Global Short-Term are exchanged for shares of an 
Exchange Fund, the exchange is executed at no charge to the shareholder, 
without the imposition of the CDSC at the time of the exchange. During the 
period of time the shareholder remains in the Exchange Fund (calculated from 
the last day of the month in which the Exchange Fund shares were acquired), 
the holding period or "year since purchase payment made" is frozen. When 
shares are redeemed out of the Exchange Fund, they will be subject to a CDSC 
which would be based upon the period of time the shareholder held shares in a 
Dean Witter Multi-Class Fund or in Global Short-Term. However, in the case of 
shares exchanged into an Exchange Fund on or after April 23, 1990, upon a 
redemption of shares which results in a CDSC being imposed, a credit (not to 
exceed the amount of the CDSC) will be given in an amount equal to the 
Exchange Fund 12b-1 distribution fees, if any, incurred on or after that date 
which are attributable to those shares. Shareholders acquiring shares of an 
Exchange Fund pursuant to this exchange privilege may exchange those shares 
back into a Dean Witter Multi-Class Fund or Global Short-Term from the 
Exchange Fund, with no CDSC being imposed on such exchange. The holding 
period previously frozen when shares were first exchanged for shares of the 
Exchange Fund resumes on the last day of the month in which shares of a Dean 
Witter Multi-Class Fund or Global Short-Term are reacquired. A CDSC is 
imposed only upon an ultimate redemption, based upon the time (calculated as 
described above) the shareholder was invested in a Dean Witter Multi-Class 
Fund or in Global Short-Term. In the case of exchanges of Class A shares 
which are subject to a CDSC, the holding period also includes the time 
(calculated as described above) the shareholder was invested in a FSC Fund. 

   When shares initially purchased in a Dean Witter Multi-Class Fund or in 
Global Short-Term are exchanged for shares of a Dean Witter Multi-Class Fund, 
shares of Global Short-Term, shares of a FSC Fund, or shares of an Exchange 
Fund, the date of purchase of the shares of the fund exchanged into, for 
purposes of the CDSC upon redemption, will be the last day of the month in 
which the shares being exchanged were originally purchased. In allocating the 
purchase payments between funds for purposes of the CDSC, the amount which 
represents the current net asset value of shares at the time of the exchange 
which were (i) purchased more than one, three or six years (depending on the 
CDSC schedule applicable to the shares) prior to the exchange, (ii) 
originally acquired through reinvestment of dividends or distributions and 
(iii) acquired in exchange for shares of FSC Funds, or for shares of other 
Dean Witter Funds for which shares of FSC Funds have been exchanged (all such 
shares called "Free Shares"), will be exchanged first. After an exchange, all 
dividends earned on shares in an Exchange Fund will be considered Free 
Shares. If the exchanged amount exceeds the value of such Free Shares, an 
exchange is made, on a block-by-block basis, of non-Free Shares held for the 
longest period of time (except that, with respect to Class B shares, if 
shares held for identical periods of time but subject to different CDSC 
schedules are held in the same Exchange Privilege account, the shares of that 
block that are subject to a lower CDSC rate will be exchanged prior to the 
shares of that block that are subject to a higher CDSC rate). Shares equal to 
any appreciation in the value of non-Free Shares exchanged will be treated as 
Free Shares, and the amount of the purchase payments for the non-Free Shares 
of the fund exchanged into will be equal to the lesser of (a) the purchase 
payments for, or (b) the current net asset value of, the exchanged non-Free 
Shares. If an exchange between funds would result in exchange of only part of 
a particular block of non-Free Shares, then shares equal to any appreciation 
in the value of the block (up to the amount of the exchange) will be treated 
as Free Shares and exchanged first, and the purchase payment for that block 
will be allocated on a pro rata basis between the non-Free Shares of that 
block to be retained and the non-Free Shares to be exchanged. The prorated 
amount of such purchase payment attributable to the retained non-Free Shares 
will remain as the purchase payment for such shares, and the amount of 
purchase payment for the exchanged non-Free Shares will be equal to the 
    

                               29           
<PAGE>
lesser of (a) the prorated amount of the purchase payment for, or (b) the 
current net asset value of, those exchanged non-Free Shares. Based upon the 
procedures described in the Prospectus under the caption "Purchase of Fund 
Shares," any applicable CDSC will be imposed upon the ultimate redemption of 
shares of any fund, regardless of the number of exchanges since those shares 
were originally purchased. 

   With respect to the redemption or repurchase of shares of the Fund, the 
application of proceeds to the purchase of new shares in the Fund or any 
other of the funds and the general administration of the Exchange Privilege, 
the Transfer Agent acts as agent for the Distributor and for the 
shareholder's selected broker-dealer, if any, in the performance of such 
functions. With respect to exchanges, redemptions or repurchases, the 
Transfer Agent shall be liable for its own negligence and not for the default 
or negligence of its correspondents or for losses in transit. The Fund shall 
not be liable for any default or negligence of the Transfer Agent, the 
Distributor or any selected broker-dealer. 

   The Distributor and any selected broker-dealer have authorized and 
appointed the Transfer Agent to act as their agent in connection with the 
application of proceeds of any redemption of Fund shares to the purchase of 
shares of any other fund and the general administration of the Exchange 
Privilege. No commission or discounts will be paid to the Distributor or any 
selected broker-dealer for any transactions pursuant to this Exchange 
Privilege. 

   Exchanges are subject to the minimum investment requirement and any other 
conditions imposed by each fund. (The minimum initial investment for the 
Exchange Privilege account of each Class is $5,000 for Dean Witter Liquid 
Asset Fund Inc., Dean Witter Tax-Free Daily Income Trust, Dean Witter 
California Tax-Free Daily Income Trust, Dean Witter New York Municipal Money 
Market Trust although those funds may, at their discretion, accept initial 
investments of as low as $1,000. The minimum investment for the Exchange 
Privilege account of each Class is $10,000 for Dean Witter Short-Term U.S. 
Treasury Trust, although that fund, in its discretion, may accept initial 
purchases of as low as $5,000. The minimum initial investment for the 
Exchange Privilege account of each Class is $5,000 for Dean Witter Special 
Value Fund. The minimum initial investment for the Exchange Privilege account 
of each Class for all other Dean Witter Funds for which the Exchange 
Privilege is available is $1,000.) Upon exchange into an Exchange Fund, the 
shares of that fund will be held in a special Exchange Privilege Account 
separately from accounts of those shareholders who have acquired their shares 
directly from that fund. As a result, certain services normally available to 
shareholders of those funds, including the check writing feature, will not be 
available for funds held in that account. 

   The Fund and each of the other Dean Witter Funds may limit the number of 
times this Exchange Privilege may be exercised by any investor within a 
specified period of time. Also, the Exchange Privilege may be terminated or 
revised at any time by the Fund and/or any of the Dean Witter Funds for which 
shares of the Fund have been exchanged, upon such notice as may be required 
by applicable regulatory agencies (presently sixty days' prior written notice 
for termination or material revision), provided that six months' prior 
written notice of termination will be given to the shareholders who hold 
shares of Exchange Funds, pursuant to the Exchange Privilege, and provided 
further that the Exchange Privilege may be terminated or materially revised 
without notice at times (a) when the New York Stock Exchange is closed for 
other than customary weekends and holidays, (b) when trading on that Exchange 
is restricted, (c) when an emergency exists as a result of which disposal by 
the Fund of securities owned by it is not reasonably practicable or it is not 
reasonably practicable for the Fund fairly to determine the value of its net 
assets, (d) during any other period when the Securities and Exchange 
Commission by order so permits (provided that applicable rules and 
regulations of the Securities and Exchange Commission shall govern as to 
whether the conditions prescribed in (b) or (c) exist) or (e) if the Fund 
would be unable to invest amounts effectively in accordance with its 
investment objective, policies and restrictions. 

   For further information regarding the Exchange Privilege, shareholders 
should contact their DWR or other selected broker-dealer account executive or 
the Transfer Agent. 

                               30           
<PAGE>
REDEMPTIONS AND REPURCHASES 
- ----------------------------------------------------------------------------- 

   
   Redemption. As stated in the Prospectus, shares of each Class of the Fund 
can be redeemed for cash at any time at the net asset value per share next 
determined; however, such redemption proceeds will be reduced by the amount 
of any applicable CDSC. If shares are held in a shareholder's account without 
a share certificate, a written request for redemption to the Fund's Transfer 
Agent at P.O. Box 983, Jersey City, NJ 07303 is required. If certificates are 
held by the shareholder, the shares may be redeemed by surrendering the 
certificates with a written request for redemption. The share certificate, or 
an accompanying stock power, and the request for redemption, must be signed 
by the shareholder or shareholders exactly as the shares are registered. Each 
request for redemption, whether or not accompanied by a share certificate, 
must be sent to the Fund's Transfer Agent, which will redeem the shares at 
their net asset value next computed (see "Purchase of Fund Shares") after it 
receives the request, and certificate, if any, in good order. Any redemption 
request received after such computation will be redeemed at the next 
determined net asset value. The term good order means that the share 
certificate, if any, and request for redemption are properly signed, 
accompanied by any documentation required by the Transfer Agent, and bear 
signature guarantees when required by the Fund or Transfer Agent. 
    

   Whether certificates are held by the shareholder or shares are held in a 
shareholder's account, if the proceeds are to be paid to any person other 
than the record owner, or if the proceeds are to be paid to a corporation 
(other than the Distributor or a selected broker-dealer for the account of 
the shareholder), partnership, trust or fiduciary, or sent to the shareholder 
at an address other than the registered address, signatures must be 
guaranteed by an eligible guarantor acceptable to the Transfer Agent 
(shareholders should contact the Transfer Agent for a determination as to 
whether a particular institution is such an eligible guarantor). A stock 
power may be obtained from any dealer or commercial bank. The Fund may change 
the signature guarantee requirements from time to time upon notice to 
shareholders, which may be by means of a supplement to the prospectus. 

   Repurchase. As stated in the Prospectus, DWR and other selected 
broker-dealers are authorized to repurchase shares represented by a share 
certificate which is delivered to any of their offices. Shares held in a 
shareholder's account without a share certificate may also be repurchased by 
DWR and other selected broker-dealers upon the telephonic request of the 
shareholder. The repurchase price is the net asset value next computed after 
such purchase order is received by DWR or other selected broker-dealer 
reduced by any applicable CDSC. 

   
   Payment for Shares Redeemed or Repurchased. As discussed in the 
Prospectus, payment for shares of any Class presented for repurchase or 
redemption will be made by check within seven days after receipt by the 
Transfer Agent of the certificate and/or written request in good order. Such 
payment may be postponed or the right of redemption suspended at times (a) 
when the New York Stock Exchange is closed for other than customary weekends 
and holidays, (b) when trading on that Exchange is restricted, (c) when an 
emergency exists as a result of which disposal by the Fund of securities 
owned by it is not reasonably practicable or it is not reasonably practicable 
for the Fund fairly to determine the value of its net assets, or (d) during 
any other period when the Securities and Exchange Commission by order so 
permits; provided that applicable rules and regulations of the Securities and 
Exchange Commission shall govern as to whether the conditions prescribed in 
(b) or (c) exist. If the shares to be redeemed have recently been purchased 
by check, payment of the redemption proceeds may be delayed for the minimum 
time needed to verify that the check used for investment has been honored 
(not more than fifteen days from the time of receipt of the check by the 
Transfer Agent). It has been and remains the Fund's policy and practice that, 
if checks for redemption proceeds remain uncashed, no interest will accrue on 
amounts represented by such uncashed checks. Shareholders maintaining margin 
accounts with DWR or another selected broker-dealer are referred to their 
account executive regarding restrictions on redemption of shares of the Fund 
pledged in the margin account. 
    

   Transfers of Shares. In the event a shareholder requests a transfer of any 
shares to a new registration, such shares will be transferred without sales 
charge at the time of transfer. With regard to 

                               31           
<PAGE>
the status of shares which are either subject to the CDSC or free of such 
charge (and with regard to the length of time shares subject to the charge 
have been held), any transfer involving less than all of the shares in an 
account will be made on a pro rata basis (that is, by transferring shares in 
the same proportion that the transferred shares bear to the total shares in 
the account immediately prior to the transfer). The transferred shares will 
continue to be subject to any applicable CDSC as if they had not been so 
transferred. 

   Reinstatement Privilege. As discussed in the Prospectus, a shareholder who 
has had his or her shares redeemed or repurchased and has not previously 
exercised this reinstatement privilege may, within 35 days after the 
redemption or repurchase, reinstate any portion or all of the proceeds of 
such redemption or repurchase in shares of the Fund in the same Class at the 
net asset value next determined after a reinstatement request, together with 
the proceeds, is received by the Transfer Agent. 

   Exercise of the reinstatement privilege will not affect the federal income 
tax and state income tax treatment of any gain or loss realized upon the 
redemption or repurchase, except that if the redemption or repurchase 
resulted in a loss and reinstatement is made in shares of the Fund, some or 
all of the loss, depending on the amount reinstated, will not be allowed as a 
deduction for federal income tax and state personal income tax purposes but 
will be applied to adjust the cost basis of the shares acquired upon 
reinstatement. 

DIVIDENDS, DISTRIBUTIONS AND TAXES 
- ----------------------------------------------------------------------------- 

   As discussed in the Prospectus under "Dividends, Distributions and Taxes," 
the Fund will determine either to distribute or to retain all or part of any 
net long-term capital gains in any year for reinvestment. If any such gains 
are retained, the Fund will pay federal income tax thereon, and shareholders 
at year-end will be able to claim their share of the tax paid by the Fund as 
a credit against their individual federal income tax. Shareholders will 
increase their tax basis of Fund shares owned by an amount equal, under 
current law, to 65% of the amount of undistributed capital gains. 

   
   Because the Fund intends to distribute substantially all of its net 
investment income and net capital gains to shareholders and otherwise qualify 
as a regulated investment company under Subchapter M of the Internal Revenue 
Code, it is not expected that the Fund will be required to pay any federal 
income tax. In addition, the Fund intends to distribute to its shareholders 
each calendar year a sufficient amount of ordinary income and capital gains 
to avoid the imposition of a 4% excise tax. Shareholders will normally have 
to pay federal income taxes, and any state income taxes, on the dividends and 
distributions they receive from the Fund. Such dividends and distributions, 
to the extent that they are derived from the net investment income or net 
short-term capital gains, are taxable to the shareholder as ordinary income 
regardless of whether the shareholder receives such payments in additional 
shares or in cash. Any dividends declared in the last quarter of any calendar 
year which are paid in the following year prior to February 1 will be deemed 
received by the shareholder in the prior calendar year. The amount of 
dividends paid by the Fund which may qualify for the dividends received 
deduction is limited to the aggregate amount of qualifying dividends which 
the Fund derives from its portfolio investments which the Fund has held for a 
minimum period, usually 46 days within a 90-day period beginning 45 days 
before the ex dividend date of each qualifying dividend. Shareholders must 
meet a similar holding period requirement with respect to their shares to 
claim the dividends received deduction with respect to any distribution of 
qualifying dividends. Any long-term capital gain distributions will also not 
be eligible for the dividends received deduction. The ability to take the 
dividends received deduction will also be limited in the case of a Fund 
shareholder which incurs or continues indebtedness which is directly 
attributable to its investment in the Fund. 

   Gains or losses on sales of securities by the Fund will be long-term 
capital gains or losses if the securities have a tax holding period of more 
than twelve months. Gains or losses on the sale of securities with a tax 
holding period of twelve months or less will be short-term capital gains or 
losses. The Treasury Department intends to issue regulations to permit 
shareholders to take into account their proportionate share of the Fund's 
capital gains distributions that will be subject to a reduced rate under the 
Taxpayer Relief Act of 1997. The Taxpayer Relief Act reduced the maximum tax 
on long-term capital gains from 
    
                               32           

<PAGE>
   
28% to 20%; however, it also lengthened the required holding period to obtain 
this lower rate from more than 12 months to more than 18 months. These lower 
rates do not apply to collectibles and certain other assets. Additionally, 
the maximum capital gain rate for assets that are held more than 5 years and 
that are acquired after December 31, 2000 is 18%. 

   After the end of the calendar year, shareholders will be sent full 
information on their dividends and capital gains distributions for tax 
purposes, including information as to the portion taxable as ordinary income, 
the portion taxable as long-term capital gains, and the amount of dividends 
eligible for the Federal dividends received deduction available to 
corporations. To avoid being subject to a 31% Federal backup withholding tax 
on taxable dividends, capital gains distributions and the proceeds of 
redemptions and repurchases, shareholders' taxpayer identification numbers 
must be furnished and certified as to their accuracy. Gains or losses on the 
Fund's transactions in certain listed options on securities and on futures 
and options on futures generally are treated as 60% long-term gain or loss 
and 40% short-term gain or loss. When the Fund engages in options and futures 
transactions, various tax regulations applicable to the Fund may have the 
effect of causing the Fund to recognize a gain or loss for tax purposes 
before that gain or loss is realized, or to defer recognition of a realized 
loss for tax purposes. Recognition, for tax purposes, of an unrealized loss 
may result in a lesser amount of the Fund's realized net gains being 
available for distribution. 
    

   Under current federal tax law, the Fund will receive net investment income 
in the form of interest by virtue of holding Treasury bills, notes and bonds, 
and will recognize income attributable to it from holding zero coupon 
Treasury securities. Current federal tax law requires that a holder (such as 
the Fund) of a zero coupon security accrue a portion of the discount at which 
the security was purchased as income each year even though the Fund receives 
no interest payment in cash on the security during the year. As an investment 
company, the Fund must pay out substantially all of its net investment income 
each year. Accordingly, the Fund, to the extent it invests in zero coupon 
Treasury securities, may be required to pay out as an income distribution 
each year an amount which is greater than the total amount of cash receipts 
of interest the Fund actually received. Such distributions will be made from 
the available cash of the Fund or by liquidation of portfolio securities if 
necessary. If a distribution of cash necessitates the liquidation of 
portfolio securities, the Investment Manager will select which securities to 
sell. The Fund may realize a gain or loss from such sales. In the event the 
Fund realizes net capital gains from such transactions, its shareholders may 
receive a larger capital gain distribution, if any, than they would in the 
absence of such transactions. 

   Any dividend or capital gains distribution received by a shareholder from 
any investment company will have the effect of reducing the net asset value 
of the shareholder's stock in that company by the exact amount of the 
dividend or capital gains distribution. Furthermore, capital gains 
distributions and some portion of the dividends are subject to federal income 
taxes. If the net asset value of the shares should be reduced below a 
shareholder's cost as a result of the payment of dividends or the 
distribution of realized long-term capital gains, such payment or 
distribution would be in part a return of capital but nonetheless would be 
taxable to the shareholder. Therefore, an investor should consider the tax 
implications of purchasing Fund shares immediately prior to a distribution 
record date. 

   Shareholders are urged to consult their attorneys or tax advisers 
regarding specific questions as to federal, state or local taxes. 

PERFORMANCE INFORMATION 
- ----------------------------------------------------------------------------- 

   
   As discussed in the Prospectus, from time to time the Fund may quote its 
"total return" in advertisements and sales literature. These figures are 
computed separately for Class A, Class B, Class C and Class D shares. The 
Fund's "average annual total return" represents an annualization of the 
Fund's total return over a particular period and is computed by finding the 
annual percentage rate which will result in the ending redeemable value of a 
hypothetical $1,000 investment made at the beginning of a one, five or ten 
year period, or for the period from the date of commencement of the Fund's 
operations, if shorter than any of the foregoing. 
    

                               33           
<PAGE>
   
   For periods of less than one year, the Fund quotes its total return on a 
non-annualized basis. Accordingly, the Fund may compute its aggregate total 
return for each Class for specified periods by determining the aggregate 
percentage rate which will result in the ending value of a hypothetical 
$1,000 investment made at the beginning of the period. For the purpose of 
this calculation, it is assumed that all dividends and distributions are 
reinvested. The formula for computing aggregate total return involves a 
percentage obtained by dividing the ending value by the initial $1,000 
investment and subtracting 1 from the result. The ending redeemable value is 
reduced by any CDSC at the end of the period. Based on the foregoing 
calculations, the total returns for the period September 26, 1997 
(commencement of operations) through February 28, 1998 were 5.62%, 6.09%, 
10.08% and 11.53% for Class A, Class B, Class C and Class D, respectively. 

   In addition to the foregoing, the Fund may advertise its total return for 
each Class over different periods of time by means of aggregate, average, 
year-by-year or other types of total return figures. Such calculations may or 
may not reflect the imposition of the maximum front-end sales charge for 
Class A or the deduction of the CDSC for each of Class B and Class C which, 
if reflected, would reduce the performance quotes. For example, the total 
return of the Fund may be calculated in the manner described above, but 
without deduction of any applicable sales charge. Based on this calculation, 
the total returns for each Class for the period September 26, 1997 
(commencement of operations) through February 28, 1998 were 11.47%, 11.09%, 
11.08% and 11.53% for Class A, Class B, Class C and Class D, respectively. 

   The Fund may also advertise the growth of hypothetical investments of 
$10,000, $50,000 and $100,000 in each Class of shares of the Fund by adding 1 
to the Fund's aggregate total return to date (expressed as a decimal and 
without taking into account the effect of any applicable CDSC) and 
multiplying by $9,475, $48,000 and $97,000 in the case of Class A 
(investments of $10,000, $50,000 and $100,000 adjusted for the initial sales 
charge) or by $10,000, $50,000 and $100,000 in each Class at inception of the 
Class would have grown to the following amounts at February 28, 1998: 
    

   
<TABLE>
<CAPTION>
                           INVESTMENT AT INCEPTION OF: 
             INCEPTION     --------------------------- 
CLASS          DATE:     $110,000     $50,000  $100,000 
- -----          -----     --------     -------  -------- 
<S>         <C>         <C>         <C>        <C>
Class A  ..   9/26/97     $10,562   $53,506    $108,126 
Class B  ..   9/26/97      11,109    55,545     111,090 
Class C  ..   9/26/97      11,108    55,540     111,080 
Class D  ..   9/26/97      11,153    55,765     111,530 
</TABLE>
    

   
   The Fund from time to time may also advertise its performance relative to 
certain performance rankings and indexes compiled by independent 
organizations. 

SHARES OF THE FUND 
- ----------------------------------------------------------------------------- 

   The shareholders of the Fund are entitled to a full vote for each full 
share of beneficial interest held. The Fund is authorized to issue an 
unlimited number of shares of beneficial interest. The Trustees themselves 
have the power to alter the number and the terms of office of the Trustees 
(as provided for in the Declaration of Trust), and they may at any time 
lengthen or shorten their own terms or make their terms of unlimited duration 
and appoint their own successors, provided that always at least a majority of 
the Trustees has been elected by the shareholders of the Fund. Under certain 
circumstances the Trustees may be removed by action of the Trustees. The 
shareholders also have the right under certain circumstances to remove the 
Trustees. The voting rights of shareholders are not cumulative, so that 
holders of more than 50 percent of the shares voting can, if they choose, 
elect all Trustees being selected, while the holders of the remaining shares 
would be unable to elect any Trustees. 

   The Declaration of Trust permits the Trustees to authorize the creation of 
additional series of shares (the proceeds of which would be invested in 
separate, independently managed portfolios) and additional classes of shares 
within any series. The Trustees have not presently authorized any such 
additional series or classes of shares other than as set forth in the 
Prospectus. 
    
                               34           

<PAGE>

   
   The Declaration of Trust further provides that no Trustee, officer, 
employee or agent of the Fund is liable to the Fund or to a shareholder, nor 
is any Trustee, officer, employee or agent liable to any third persons in 
connection with the affairs of the Fund, except as such liability may arise 
from his/her or its own bad faith, willful misfeasance, gross negligence or 
reckless disregard of his/her or its duties. It also provides that all third 
persons shall look solely to the Fund property for satisfaction of claims 
arising in connection with the affairs of the Fund. With the exceptions 
stated, the Declaration of Trust provides that a Trustee, officer, employee 
or agent is entitled to be indemnified against all liability in connection 
with the affairs of the Fund. 

   The Fund is authorized to issue an unlimited number of shares of 
beneficial interest. 

   The Fund shall be of unlimited duration subject to the provisions in the 
Declaration of Trust concerning termination by action of the shareholders or 
the Trustees. 

CUSTODIAN AND TRANSFER AGENT 
- ----------------------------------------------------------------------------- 

   The Bank of New York, 90 Washington Street, New York, NY 10286, is the 
Custodian of the Fund's assets. Any of the Fund's cash balances with the 
Custodian in excess of $100,000 are unprotected by federal deposit insurance. 
Such balances may, at times, be substantial. 

   Morgan Stanley Dean Witter Trust FSB ("MSDW Trust"), Harborside Financial 
Center, Plaza Two, Jersey City, New Jersey 07311 is the Transfer Agent of the 
Fund's shares and Dividend Disbursing Agent for payment of dividends and 
distributions on Fund shares and Agent for shareholders under various 
investment plans described herein. MSDW Trust is an affiliate of Dean Witter 
InterCapital Inc., the Fund's Investment Manager, and Dean Witter 
Distributors Inc., the Fund's Distributor. As Transfer Agent and Dividend 
Disbursing Agent, MSDW Trust's responsibilities include maintaining 
shareholder accounts, disbursing cash dividends and reinvesting dividends, 
processing account registration changes, handling purchase and redemption 
transactions, mailing prospectuses and reports, mailing and tabulating 
proxies, processing share certificate transactions, and maintaining 
shareholder records and lists. For these services MSDW Trust receives a per 
shareholder account fee from the Fund. 
    

INDEPENDENT ACCOUNTANTS 
- ----------------------------------------------------------------------------- 

   Price Waterhouse LLP serves as the independent accountants of the Fund. 
The independent accountants are responsible for auditing the annual financial 
statements of the Fund. 

REPORTS TO SHAREHOLDERS 
- ----------------------------------------------------------------------------- 

   The Fund will send to shareholders, at least semi-annually, reports 
showing the Fund's portfolio and other information. An annual report, 
containing financial statements audited by independent account-ants, will be 
sent to shareholders each year. 

   
   The Fund's fiscal year ends on August 31. The financial statements of the 
Fund must be audited at least once a year by independent accountants whose 
selection is made annually by the Fund's Board of Trustees. 
    

LEGAL COUNSEL 
- ----------------------------------------------------------------------------- 

   Barry Fink, Esq., who is an officer and the General Counsel of the 
Investment Manager, is an officer and the General Counsel of the Fund. 

                               35           
<PAGE>

EXPERTS 
- ----------------------------------------------------------------------------- 
   
   The Statement of Assets and Liabilities of the Fund included in this 
Statement of Additional Information and incorporated by reference in the 
Prospectus has been so included and incorporated in reliance on the report of 
Price Waterhouse LLP, independent accountants, given on the authority of said 
firm as experts in auditing and accounting. 
    

REGISTRATION STATEMENT 
- ----------------------------------------------------------------------------- 

   This Statement of Additional Information and the Prospectus do not contain 
all of the information set forth in the Registration Statement the Fund has 
filed with the Securities and Exchange Commission. The complete Registration 
Statement may be obtained from the Securities and Exchange Commission upon 
payment of the fee prescribed by the rules and regulations of the Commission. 

                               36           
<PAGE>

REPORT OF INDEPENDENT ACCOUNTANTS 
- ----------------------------------------------------------------------------- 

To the Shareholder and Trustees of 
Dean Witter S&P 500 Index Fund 

In our opinion, the accompanying statement of assets and liabilities presents 
fairly, in all material respects, the financial position of Dean Witter S&P 
500 Index Fund (the "Fund") at July 28, 1997, in conformity with generally 
accepted accounting principles. This financial statement is the 
responsibility of the Fund's management; our responsibility is to express an 
opinion on this financial statement based on our audit. We conducted our 
audit of this financial statement in accordance with generally accepted 
auditing standards which require that we plan and perform the audit to obtain 
reasonable assurance about whether the financial statement is free of 
material misstatement. An audit includes examining, on a test basis, evidence 
supporting the amounts and disclosures in the financial statement, assessing 
the accounting principles used and significant estimates made by management, 
and evaluating the overall financial statement presentation. We believe that 
our audit provides a reasonable basis for the opinion expressed above. 

PRICE WATERHOUSE LLP 
1177 Avenue of the Americas 
New York, New York 
July 30, 1997 

                               37           
<PAGE>
DEAN WITTER S&P 500 INDEX FUND 
Statement of Assets and Liabilities at July 28, 1997 
- ----------------------------------------------------------------------------- 

<TABLE>
<CAPTION>
<S>                                                       <C>
 ASSETS: 
 Cash....................................................  $100,000 
 Deferred organizational expenses (Note 1)...............    49,500 
                                                          ---------- 
   Total Assets..........................................   149,500 
                                                          ---------- 
LIABILITIES: 
 Organizational expenses payable (Note 1)................    49,500 
 Commitments (Notes 1 and 2).............................     -0- 
                                                          ---------- 
   Total Liabilities.....................................    49,500 
                                                          ---------- 
   Net Assets............................................  $100,000 
                                                          ========== 
CLASS A SHARES: 
Net Assets...............................................  $ 25,000 
Shares Outstanding (unlimited authorized, $.01 par 
 value)..................................................     2,500 
  NET ASSET VALUE PER SHARE..............................  $  10.00 
                                                          ========== 
  MAXIMUM OFFERING PRICE 
   (net asset value plus 5.5% of net asset value) .......  $  10.55 
                                                          ========== 
CLASS B SHARES: 
Net Assets...............................................  $ 25,000 
Shares Outstanding (unlimited authorized, $.01 par 
 value)..................................................     2,500 
  NET ASSET VALUE PER SHARE..............................  $  10.00 
                                                          ========== 
CLASS C SHARES: 
Net Assets...............................................  $ 25,000 
Shares Outstanding (unlimited authorized, $.01 par 
 value)..................................................     2,500 
  NET ASSET VALUE PER SHARE..............................  $  10.00 
                                                          ========== 
CLASS D SHARES: 
Net Assets...............................................  $ 25,000 
Shares Outstanding (unlimited authorized, $.01 par 
 value)..................................................     2,500 
  NET ASSET VALUE PER SHARE..............................  $  10.00 
                                                          ========== 
</TABLE>

   NOTE 1--Dean Witter S&P 500 Index Fund (the "Fund") was organized as a 
Massachusetts business trust on June 18, 1997. To date the Fund has had no 
transactions other than those relating to organizational matters and the sale 
of 2,500 shares of beneficial interest for $25,000 of each class to Dean 
Witter InterCapital Inc. (the "Investment Manager"). The Fund is registered 
under the Investment Company Act of 1940, as amended (the "Act"), as a 
diversified, open-end management investment company. The investment objective 
of the Fund is to provide investment results that, before expenses, 
correspond to the total return of the Standard & Poor's 500 Composite Stock 
Price Index. Organizational expenses of the Fund incurred prior to the 
offering of the Fund's shares will be paid by the Investment Manager. It is 
currently estimated that the Investment Manager will incur and be reimbursed 
by the Fund for approximately $49,500 in organizational expenses. These 
expenses will be deferred and amortized by the Fund on the straight-line 
method over a period not to exceed five years from the date of commencement 
of the Fund's operations. In the event that at any time during the five year 
period beginning with the date of the commencement of operations the initial 
shares acquired by the Investment Manager prior to such date are redeemed, by 
any holder thereof, the redemption proceeds payable in respect of such shares 
will be reduced by the pro rata share (based on the proportionate share of 
the initial shares redeemed to the total number of original shares 
outstanding at the time of redemption) of the then unamortized deferred 
organizational expenses as of the date of such redemption. In the event that 
the Fund liquidates before the deferred organizational expenses are fully 
amortized, the Investment Manager shall bear such unamortized deferred 
organizational expenses. 

                               38           
<PAGE>

   NOTE 2--The Fund has entered into an investment management agreement with 
the Investment Manager. Certain officers and/or trustees of the Fund are 
officers and/or directors of the Investment Manager. The Fund has retained 
the Investment Manager to manage the investment of the Fund's assets, 
including the placing of orders for the purchase and sale of portfolio 
securities. Under the terms of the Investment Management Agreement, the 
Investment Manager maintains certain of the Fund's books and records and 
furnishes, at its own expense, such office space, facilities, equipment, 
supplies, clerical help and bookkeeping and certain legal services as the 
Fund may reasonably require in the conduct of its business. In addition, the 
Investment Manager pays the salaries of all personnel, including officers of 
the Fund, who are employees of the Investment Manager. The Investment Manager 
also bears the cost of the Fund's telephone service, heat, light, power and 
other utilities. 

   As full compensation for the services and facilities furnished to the Fund 
and expenses of the Fund incurred by the Investment Manager, the Fund will 
pay the Investment Manager monthly compensation calculated daily by applying 
the annual rate of 0.40% to the Fund's daily net assets. The Investment 
Manager has agreed to assume all expenses (except for brokerage and Plan of 
Distribution fees) and to waive the compensation provided for in its 
Management Agreement to the extent that such expenses and compensation on an 
annualized basis exceed 0.50% of the daily net assets of the Fund. 

   Shares of the Fund will be distributed by Dean Witter Distributors Inc. 
(the "Distributor"), an affiliate of the Investment Manager, during the 
initial and continuous offering of the Fund's shares. The Fund has adopted a 
Plan of Distribution pursuant to Rule 12b-1 under the Act (the "Plan") with 
respect to the distribution of Class A, Class B and Class C shares of the 
Fund. The Plan provides that the Distributor will bear the expense of all 
promotional and distribution related activities on behalf of those shares, 
including the payment of commissions for sales of such shares and incentive 
compensation to and expenses of Dean Witter Reynolds Inc. ("DWR"), an 
affiliate of the Investment Manager, account executives and others who engage 
in or support distribution of shares or who service shareholder accounts, 
including overhead and telephone expenses; printing and distribution of 
prospectuses and reports used in connection with the offering of the Fund's 
shares to other than current shareholders; and preparation, printing and 
distribution of sales literature and advertising materials. In addition, with 
respect to Class B, the Distributor may utilize fees paid pursuant to the 
Plan to compensate DWR and others for their opportunity costs in advancing 
such amounts, which compensation would be in the form of a carrying charge on 
any unreimbursed distribution expenses incurred. 

   To compensate the Distributor for the services provided and for the 
expenses borne by the Distributor and others under the Plan, Class A, Class B 
and Class C will pay the Distributor compensation accured daily and payable 
monthly at the annual rate of 0.25% of the average daily net assets of Class 
A and 1.0% of the average daily net assets of each of Class B and Class C. In 
the case of Class B Shares, provided that the Plan continues in effect, any 
cumulative expenses incurred by the Distributor but not yet recovered may be 
recovered through the payment of future distribution fees from the Fund 
pursuant to the Plan and contingent deferred sales charges paid by investors 
upon redemption of Class B shares. Although there is no legal obligation for 
the Fund to pay expenses incurred in excess of payments made to the 
Distributor under the Plan and the proceeds of contingent deferred sales 
charges paid by investors upon redemption of shares, if for any reason the 
Plan is terminated, the Trustees will consider at that time the manner in 
which to treat such expenses. In the case of Class A shares and Class C 
shares, expenses incurred pursuant to the Plan in any calendar year in excess 
of 0.25% or 1.00% of the average daily net assets of Class A or Class C, 
respectively, will not be reimbursed by the Fund through payments in any 
subsequent year, except that expenses representing a gross sales credit to 
account executives may be reimbursed in the subsequent calendar year. 

   Dean Witter Trust FSB (the "Transfer Agent"), an affiliate of the 
Investment Manager and the Distributor, is the transfer agent of the Fund's 
shares, dividend disbursing agent for payment of dividends and distributions 
on Fund shares and agent for shareholders under various investment plans. 

   The Investment Manager has undertaken to assume all Fund expenses (except 
for the Plan fee and brokerage fees) and to waive the compensation provided 
for in its investment management agreement for services rendered until such 
time as the Fund has $50 million of net assets or until six months from the 
date of commencement of the Fund's operations, whichever occurs first. 

                               39           

<PAGE>



                         DEAN WITTER S&P 500 INDEX FUND

                            PART C OTHER INFORMATION


 Item 24.  Financial Statements and Exhibits

      a)   Financial Statements

     (1)   Financial statements and schedules, included
           in Prospectus (Part A):
                                                                        Page in
                                                                     Prospectus

           Financial Highlights for the period September 26, 1997 
           (commencement of operations) through February 28, 1998
           (unaudited).................................................    6

           Portfolio of Investments at February 28, 1998 (unaudited)...    30

           Statement of Assets and Liabilities at February 28, 1998
           (unaudited).................................................    39

           Statement of Operations for the year ended February 28, 1998
           (unaudited).................................................    40

           Statement of Changes in Net Assets for the years ended
           February 28, 1998 (unaudited)...............................    41

           Notes to Financial Statements at February 28, 1998 
           (unaudited).................................................    42

     (2)   Financial statements included in the Statement of Additional
           Information (Part B):

           Statement of Assets and Liabilities at July 28, 1997........    38

     (3)   Financial statements included in Part C:

           None

     b)    Exhibits

     2.    Form of Amended and Restated By-Laws of the Registrant.

     8.    Form of Transfer Agency and Service Agreement between the
           Registrant and Dean Witter Trust FSB.

    11.    Consent of Independent Accountants.

    16.    Schedules for Computations of Performance Quotations.

    27.    Financial Data Schedules.

  Other.   Power of Attorney.

           All other exhibits were previously filed via EDGAR and are hereby
           incorporated by reference.

<PAGE>

Item 25.   Persons Controlled by or Under Common Control with Registrant

           None

Item 26.   Number of Holders of Securities

                (1)                           (2)
                                        Number of Record
           Title of Class         Holders at February 28, 1998
           --------------         ----------------------------
              Class A                          762
              Class B                       30,542
              Class C                        2,398
              Class D                          714

Item 27.   Indemnification

    Pursuant to Section 5.3 of the Registrant's Declaration of Trust and under
Section 4.8 of the Registrant's By-laws, the indemnification of the
Registrant's trustees, officers, employees and agents is permitted if it is
determined that they acted under the belief that their actions were in or not
opposed to the best interest of the Registrant, and, with respect to any
criminal proceeding, they had reasonable cause to believe their conduct was not
unlawful. In addition, indemnification is permitted only if it is determined
that the actions in question did not render them liable by reason of willful
misfeasance, bad faith or gross negligence in the performance of their duties
or by reason of reckless disregard of their obligations and duties to the
Registrant. Trustees, officers, employees and agents will be indemnified for
the expense of litigation if it is determined that they are entitled to
indemnification against ,any liability established in such litigation. The
Registrant may also advance money for these expenses provided that they give
their undertakings to repay the Registrant unless their conduct is later
determined to permit indemnification.

    Pursuant to Section 5.2 of the Registrant's Declaration of Trust and
paragraph 8 of the Registrant's Investment Management Agreement, neither the
Investment Manager nor any trustee, officer, employee or agent of the
Registrant shall be liable for any action or failure to act, except in the case
of bad faith, willful misfeasance, gross negligence or reckless disregard of
duties to the Registrant.

    Insofar as indemnification for liabilities arising under the Securities Act
of 1933 (the "Act") may be permitted to trustees, officers and controlling
persons of the Registrant pursuant to the foregoing provisions or otherwise,
the Registrant has been advised that in the opinion of the Securities and
Exchange Commission such indemnification is against public policy as expressed
in the Act and is, therefore, unenforceable. In the event that a claim for
indemnification against such liabilities (other than the payment by the
Registrant of expenses incurred or paid by a trustee, officer, or controlling
person of the Registrant in connection with the successful defense of any
action, suit or proceeding) is asserted against the Registrant by such trustee,
officer or controlling person in connection with the shares being registered,
the 

                                       2
<PAGE>

Registrant will, unless in the opinion of its counsel the matter has been
settled by controlling precedent, submit to a court of appropriate jurisdiction
the question whether such indemnification by it is against public policy as
expressed in the Act, and will be governed by the final adjudication of such
issue.

    The Registrant hereby undertakes that it will apply the indemnification
provision of its by-laws in a manner consistent with Release 11330 of the
Securities and Exchange Commission under the Investment Company Act of 1940, so
long as the interpretation of Sections 17(h) and 17(i) of such Act remains in
effect.

    Registrant, in conjunction with the Investment Manager, Registrant's
Trustees, and other registered investment management companies managed by the
Investment Manager, maintains insurance on behalf of any person who is or was a
Trustee, officer, employee, or agent of Registrant, or who is or was serving at
the request of Registrant as a trustee, director, officer, employee or agent of
another trust or corporation, against any liability asserted against him and
incurred by him or arising out of his position. However, in no event will
Registrant maintain insurance to indemnify any such person for any act for
which Registrant itself is not permitted to indemnify him.

Item 28.  Business and Other Connections of Investment Adviser

     See "The Fund and its Management" in the Prospectus regarding the business
of the investment adviser. The following information is given regarding
officers of Dean Witter InterCapital Inc. InterCapital is a wholly-owned
subsidiary of Morgan Stanley Dean Witter & Co. The principal address
of the Dean Witter Funds is Two World Trade Center, New York, New York 10048.

     The term "Dean Witter Funds" used below refers to the following registered
 investment companies:

 Closed-End Investment Companies 
    (1) InterCapital Income Securities Inc. 
    (2) High Income Advantage Trust 
    (3) High Income Advantage Trust II 
    (4) High Income Advantage Trust III 
    (5) Municipal Income Trust 
    (6) Municipal Income Trust II 
    (7) Municipal Income Trust III 
    (8) Dean Witter Government Income Trust 
    (9) Municipal Premium Income Trust 
   (10) Municipal Income Opportunities Trust 
   (11) Municipal Income Opportunities Trust II 
   (12) Municipal Income Opportunities Trust III 
   (13) Prime Income Trust 
   (14) InterCapital Insured Municipal Bond Trust 
   (15) InterCapital Quality Municipal Income Trust 
   (16) InterCapital Quality Municipal Investment Trust 
   (17) InterCapital Insured Municipal Income Trust
   (18) InterCapital California Insured Municipal Income Trust
   (19) InterCapital Insured Municipal Trust
   (20) InterCapital Quality Municipal Securities
 
                                       3
<PAGE>

   (21) InterCapital New York Quality Municipal Securities
   (22) InterCapital California Quality Municipal Securities
   (23) InterCapital Insured California Municipal Securities
   (24) InterCapital Insured Municipal Securities

Open-end Investment Companies
    (1) Active Assets California Tax-Free Trust
    (2) Active Assets Government Securities Trust
    (3) Active Assets Money Trust
    (4) Active Assets Tax-Free Trust
    (5) Dean Witter American Value Fund
    (6) Dean Witter Balanced Growth Fund
    (7) Dean Witter Balanced Income Fund 
    (8) Dean Witter California Tax-Free Daily Income Trust 
    (9) Dean Witter California Tax-Free Income Fund 
   (10) Dean Witter Capital Appreciation Fund 
   (11) Dean Witter Capital Growth Securities 
   (12) Dean Witter Convertible Securities Trust 
   (13) Dean Witter Developing Growth Securities Trust 
   (14) Dean Witter Diversified Income Trust
   (15) Dean Witter Dividend Growth Securities Inc. 
   (16) Dean Witter European Growth Fund Inc. 
   (17) Dean Witter Federal Securities Trust 
   (18) Dean Witter Financial Services Trust
   (19) Dean Witter Fund of Funds 
   (20) Dean Witter Global Asset Allocation Fund 
   (21) Dean Witter Global Dividend Growth Securities 
   (22) Dean Witter Global Short-Term Income Fund Inc. 
   (23) Dean Witter Global Utilities Fund
   (24) Dean Witter Hawaii Municipal Trust 
   (25) Dean Witter Health Sciences Trust 
   (26) Dean Witter High Yield Securities Inc. 
   (27) Dean Witter Income Builder Fund 
   (28) Dean Witter Information Fund 
   (29) Dean Witter Intermediate Income Securities
   (30) Dean Witter Intermediate Term U.S. Treasury Trust 
   (31) Dean Witter Dean Witter International SmallCap Fund 
   (32) Dean Witter Japan Fund
   (33) Dean Witter Limited Term Municipal Trust 
   (34) Dean Witter Liquid Asset Fund Inc. 
   (35) Dean Witter Market Leader Trust 
   (36) Dean Witter Mid-Cap Growth Fund 
   (37) Dean Witter Multi-State Municipal Series Trust 
   (38) Dean Witter Natural Resource Development Securities Inc. 
   (39) Dean Witter New York Municipal Money Market Trust 
   (40) Dean Witter New York Tax-Free Income Fund
   (41) Dean Witter Pacific Growth Fund Inc. 
   (42) Dean Witter Precious Metals and Minerals Trust 
   (43) Dean Witter Retirement Series 
   (44) Dean Witter Select Dimensions Investment Series
   (45) Dean Witter Select Municipal Reinvestment Fund 




                                   4

<PAGE>

   (46) Dean Witter Short-Term Bond Fund
   (47) Dean Witter Short-Term U.S. Treasury Trust
   (48) Dean Witter Special Value Fund
   (49) Dean Witter Strategist Fund
   (50) Dean Witter S&P 500 Index Fund
   (51) Dean Witter Tax-Exempt Securities Trust
   (52) Dean Witter Tax-Free Daily Income Trust
   (53) Dean Witter U.S. Government Money Market Trust
   (54) Dean Witter U.S. Government Securities Trust
   (55) Dean Witter Utilities Fund
   (56) Dean Witter Value-Added Market Series
   (57) Dean Witter Variable Investment Series
   (58) Dean Witter World Wide Income Trust
   (59) Dean Witter World Wide Investment Trust
   (60) Morgan Stanley Dean Witter Competitive Edge Fund,
             "Best Ideas Portfolio"
   (61) Morgan Stanley Dean Witter Growth Fund
   (62) Morgan Stanley Dean Witter Mid-Cap Dividend Growth Securities

The term "TCW/DW Funds" refers to the following registered investment
companies:

Open-End Investment Companies
 
    (1) TCW/DW North American Government Income Trust 
    (2) TCW/DW Latin American Growth Fund 
    (3) TCW/DW Income and Growth Fund 
    (4) TCW/DW SmallCap Growth Fund 
    (5) TCW/DW Total Return Trust 
    (6) TCW/DW Mid-Cap Equity Trust 
    (7) TCW/DW Global Telecom Trust 
    (8) TCW/DW Emerging Markets Opportunities Trust

Closed-End Investment Companies 

    (1) TCW/DW Term Trust 2000 
    (2) TCW/DW Term Trust 2002 
    (3) TCW/DW Term Trust 2003

                                       5
<PAGE>

                                        OTHER SUBSTANTIAL BUSINESS,
  NAME AND POSITION                     PROFESSION, VOCATION OR EMPLOYMENT,
  WITH DEAN WITTER                      INCLUDING NAME, PRINCIPAL ADDRESS AND
  INTERCAPITAL INC.                     NATURE OF CONNECTION
  ------------------                    ---------------------------------------
  Charles A. Fiumefreddo                Executive Vice President and Director 
  Chairman, Chief Executive             of Dean Witter Reynolds Inc. ("DWR"); 
  Officer and Director                  Chairman, Chief Executive Officer and 
                                        Director of Dean Witter Distributors  
                                        Inc. ("Distributors") and Dean Witter 
                                        Services Company Inc. ("DWSC");       
                                        Chairman and Director of Morgan
                                        Stanley Dean Witter Trust FSB ("MSDW
                                        Trust"); Chairman, Director or
                                        Trustee, President and Chief Executive
                                        Officer of the Dean Witter Funds and
                                        Chairman, Chief Executive Officer and
                                        Trustee of the TCW/DW Funds; Director
                                        and/or officer of various Morgan
                                        Stanley Dean Witter & Co. ("MSDW")
                                        subsidiaries.

  Philip J. Purcell                     Chairman, Chief Executive Officer and
  Director                              Director of MSDW and DWR; Director of
                                        DWSC and Distributors; Director or
                                        Trustee of the Dean Witter Funds;
                                        Director and/or officer of various
                                        MSDW subsidiaries.

  Richard M. DeMartini                  President and Chief Operating Officer of
  Director                              Dean Witter Capital, a division of DWR;
                                        Director of DWR, DWSC, Distributors and
                                        MSDW Trust; Trustee of the TCW/DW
                                        Funds.

  James F. Higgins                      President and Chief Operating Officer of
  Director                              Dean Witter Financial; Director of DWR,
                                        DWSC, Distributors and MSDW Trust.

  Thomas C. Schneider                   Executive Vice President and Chief
  Executive Vice President              Strategic and Administrative Officer of
  Chief Financial Officer and Director  MSDW; Executive Vice President and
                                        Chief Financial Officer of DWSC and
                                        Distributors; Director of DWR, DWSC,
                                        Distributors and MSDW.

  Christine A. Edwards                  Executive Vice President, Chief Legal
  Director                              Officer and Secretary of MSDW;
                                        Executive Vice President, Secretary and
                                        Chief Legal Officer of Distributors;
                                        Director of DWR, DWSC and Distributors.

  Mitchell M. Merin                     President and Chief Strategic
  President and Chief Strategic         Officer of DWSC; Executive Vice
  Officer                               President of Distributors; Executive
                                        Vice President and Director of MSDW
                                        Trust; Executive Vice President and
                                        Director of DWR; Director of SPS
                                        Transaction Services, Inc. and
                                        various other MSDW subsidiaries.



                                       6
<PAGE>

                                     OTHER SUBSTANTIAL BUSINESS,
  NAME AND POSITION                  PROFESSION, VOCATION OR EMPLOYMENT,
  WITH DEAN WITTER                   INCLUDING NAME, PRINCIPAL ADDRESS AND
  INTERCAPITAL INC.                  NATURE OF CONNECTION
  ------------------                 ------------------------------------------
  Robert M. Scanlan                  President and Chief Operating  Officer of
  President and Chief Operating      DWSC; Executive Vice President of
  Officer                            Distributors; Executive Vice President
                                     and Director of MSDW Trust; Vice President
                                     of the Dean Witter Funds and the TCW/DW
                                     Funds.

  Joseph J. McAlinden                Vice President of the Dean Witter Funds
  Executive Vice President and       and Director of MSDW Trust.
  Chief Investment Officer

  Edward C. Oelsner, III
  Executive Vice President

  John B. Van Heuvelen               President, Chief Operating Officer and
  Executive Vice President           Director of MSDW Trust.

  Barry Fink                         Assistant Secretary of DWR; Senior Vice
  Senior Vice President, Secretary   President, Secretary and General Counsel
  and General Counsel                of DWSC; Senior Vice President,
                                     Assistant Secretary and Assistant
                                     General Counsel of Distributors; Vice
                                     President, Secretary and General Counsel
                                     of the Dean Witter Funds and the TCW/DW
                                     Funds.

  Peter M. Avelar
  Senior Vice President              Vice President of various Dean Witter
                                     Funds.

  Mark Bavoso
  Senior Vice President              Vice President of various Dean Witter
                                     Funds.

  Richard Felegy
  Senior Vice President

  Edward F. Gaylor
  Senior Vice President              Vice President of various Dean Witter
                                     Funds.
 
  Robert S. Giambrone                Senior Vice President of DWSC,
  Senior Vice President              Distributors and MSDW Trust and Director
                                     of MSDW Trust; Vice President of the Dean
                                     Witter Funds and the TCW/DW Funds.

  Kenton J. Hinchliffe
  Senior Vice President              Vice President of various Dean Witter
                                     Funds.

  Kevin Hurley
  Senior Vice President              Vice President of various Dean Witter
                                     Funds.

                                       7
<PAGE>

                                     OTHER SUBSTANTIAL BUSINESS,
  NAME AND POSITION                  PROFESSION, VOCATION OR EMPLOYMENT,
  WITH DEAN WITTER                   INCLUDING NAME, PRINCIPAL ADDRESS AND
  INTERCAPITAL INC.                  NATURE OF CONNECTION
  ------------------                 ------------------------------------------
  Margaret Iannuzzi
  Senior Vice President

  Jenny Beth Jones
  Senior Vice President              Vice President of Dean Witter Special
                                     Value Fund.

  John B. Kemp, III
  Senior Vice President              President of Distributors.

  Anita H. Kolleeny
  Senior Vice President              Vice President of various Dean Witter
                                     Funds.

  Jonathan R. Page
  Senior Vice President              Vice President of various Dean Witter 
                                     Funds.

  Ira N. Ross
  Senior Vice President              Vice President of various Dean Witter 
                                     Funds.

  Guy G. Rutherfurd, Jr.             Vice President of Dean Witter Market
  Senior Vice President              Leader Trust.

  Rafael Scolari
  Senior Vice President              Vice President of Prime Income Trust.

  Rochelle G. Siegel
  Senior Vice President              Vice President of various Dean  Witter
                                     Funds.

  Jayne M. Stevlingson
  Senior Vice President              Vice President of various Dean Witter 
                                     Funds.

  Paul D. Vance
  Senior Vice President              Vice President of various Dean Witter
                                     Funds.

  Elizabeth A. Vetell
  Senior Vice President

  James F. Willison
  Senior Vice President              Vice President of various Dean Witter
                                     Funds.

  Ronald J. Worobel
  Senior Vice President              Vice President of various Dean Witter
                                     Funds.

  Douglas Brown
  First Vice President


                                       8
<PAGE>

                                     OTHER SUBSTANTIAL BUSINESS,
  NAME AND POSITION                  PROFESSION, VOCATION OR EMPLOYMENT,
  WITH DEAN WITTER                   INCLUDING NAME, PRINCIPAL ADDRESS AND
  INTERCAPITAL INC.                  NATURE OF CONNECTION
  ------------------                 ------------------------------------------
  Thomas F. Caloia                   First Vice President and Assistant
  First Vice President               Treasurer of DWSC. Treasurer of the
  and Assistant Treasurer            Dean Witter Funds and the TCW/DW Funds.

  Thomas Chronert
  First Vice President

  Rosalie Clough
  First Vice President

  Marilyn K. Cranney                 Assistant Secretary of DWR; First Vice
  First Vice President               President and Assistant Secretary of DWSC;
  and Assistant Secretary            Assistant Secretary of the Dean Witter
                                     Funds and the TCW/DW Funds.

  Michael Interrante                 First Vice President and Controller of
  First Vice President and           DWSC; Assistant Treasurer of Distributors;
  Controller                         First Vice President and Treasurer of MSDW
                                     Trust.

  David Johnson
  First Vice President

  Stanley Kapica
  First Vice President

  Robert Zimmerman
  First Vice President

  Dale Albright
  Vice President

  Joan G. Allman
  Vice President

 Andrew Arbenz
 Vice President

 Joseph Arcieri
 Vice President                      Vice President of various Dean Witter
                                     Funds.

 Nancy Belza
 Vice President

 Maurice Bendrihem
 Vice President and
 Assistant Controller



                                       9
<PAGE>

                                     OTHER SUBSTANTIAL BUSINESS,
  NAME AND POSITION                  PROFESSION, VOCATION OR EMPLOYMENT,
  WITH DEAN WITTER                   INCLUDING NAME, PRINCIPAL ADDRESS AND
  INTERCAPITAL INC.                  NATURE OF CONNECTION
  ------------------                 ------------------------------------------
  Joseph Cardwell 
  Vice President

  Philip Casparius
  Vice President
 
  B. Catherine Connelly
  Vice President

  Salvatore DeSteno
  Vice President                         Vice President of DWSC.

  Bruce Dunn
  Vice President

  Michael Durbin
  Vice President

  Jeffrey D. Geffen
  Vice President

  Michael Geringer
  Vice President

  Stephen Greenhut
  Vice President

  Peter W. Gurman
  Vice President

  Matthew Haynes                         Vice President of Dean Witter
  Vice President                         Variable Investment Series.

  Peter Hermann
  Vice President                         Vice President of various Dean Witter
                                         Funds.
  Elizabeth Hinchman
  Vice President

  David Hoffman
  Vice President

  Christopher Jones
  Vice President

  Kevin Jung
  Vice President
  

                                      10
<PAGE>

                                     OTHER SUBSTANTIAL BUSINESS,
  NAME AND POSITION                  PROFESSION, VOCATION OR EMPLOYMENT,
  WITH DEAN WITTER                   INCLUDING NAME, PRINCIPAL ADDRESS AND
  INTERCAPITAL INC.                  NATURE OF CONNECTION
  ------------------                 ------------------------------------------
  James P. Kastberg
  Vice President

  Michelle Kaufman
  Vice President                       Vice President of various Dean Witter
                                       Funds.

  Paula LaCosta
  Vice President                       Vice President of various Dean Witter
                                       Funds.

  Thomas Lawlor
  Vice President

  Gerard J. Lian
  Vice President                       Vice President of various Dean Witter
                                       Funds.

  Catherine Maniscalco                 Vice President of Dean Witter Natural
  Vice President                       Resource Development Securities Inc.

  Albert McGarity
  Vice President

  LouAnne D. McInnis                   Vice President and Assistant Secretary
  Vice President and                   of DWSC; Assistant Secretary of the
  Assistant Secretary                  Dean Witter Funds and the TCW/DW Funds.

  Sharon K. Milligan
  Vice President

  Julie Morrone
  Vice President

  Mary Beth Mueller
  Vice President

  David Myers                           Vice President of Dean Witter Natural
  Vice President                        Resource Development Securities Inc.

  James Nash
  Vice President

  Richard Norris
  Vice President

  Carsten Otto                          Vice President and Assistant
  Vice President and                    Secretary of DWSC; Assistant
  Assistant Secretary                   Secretary of the Dean Witter Funds
                                        and the TCW/DW Funds.


                                      11
<PAGE>

                                     OTHER SUBSTANTIAL BUSINESS,
  NAME AND POSITION                  PROFESSION, VOCATION OR EMPLOYMENT,
  WITH DEAN WITTER                   INCLUDING NAME, PRINCIPAL ADDRESS AND
  INTERCAPITAL INC.                  NATURE OF CONNECTION
  ------------------                 ------------------------------------------
  Anne Pickrell                       Vice President of Dean Witter Global
  Vice President                      Short-Term Income Fund Inc.

  Michael Roan
  Vice President

  John Roscoe
  Vice President

  Hugh Rose
  Vice President

  Robert Rossetti                     Vice President of Dean Witter Precious
  Vice President                      Metals and Minerals Trust.

  Ruth Rossi                          Vice President and Assistant Secretary
  Vice President and                  of DWSC;  Assistant Secretary of the Dean
  Assistant Secretary                 Witter Funds and the TCW/DW Funds.

  Carl F. Sadler
  Vice President

  Deborah Santaniello
  Vice President

  Peter J. Seeley                     Vice President of Dean Witter World
  Vice President                      Wide Income Trust.

  Naomi Stein
  Vice President

  Kathleen H. Stromberg
  Vice President                      Vice President of various Dean Witter
                                      Funds.

  Marybeth Swisher
  Vice President

  Robert Vanden Assem
  Vice President

  James P.  Wallin
  Vice President

  Alice Weiss
  Vice President                      Vice President of various Dean Witter
                                      Funds.

                                      12
<PAGE>

Item 29.          Principal Underwriters


     (a)    Dean Witter Distributors Inc. ("Distributors"), a Delaware
            corporation, is the principal underwriter of the Registrant.
            Distributors is also the principal underwriter of the following
            investment companies:

     (1)     Dean Witter Liquid Asset Fund Inc.
     (2)     Dean Witter Tax-Free Daily Income Trust
     (3)     Dean Witter California Tax-Free Daily Income Trust
     (4)     Dean Witter Retirement Series
     (5)     Dean Witter Dividend Growth Securities Inc.
     (6)     Dean Witter Global Asset Allocation
     (7)     Dean Witter World Wide Investment Trust
     (8)     Dean Witter Capital Growth Securities
     (9)     Dean Witter Convertible Securities Trust
     (10)    Active Assets Tax-Free Trust
     (11)    Active Assets Money Trust
     (12)    Active Assets California Tax-Free Trust
     (13)    Active Assets Government Securities Trust
     (14)    Dean Witter Short-Term Bond Fund
     (15)    Dean Witter Mid-Cap Growth Fund
     (16)    Dean Witter U.S. Government Securities Trust
     (17)    Dean Witter High Yield Securities Inc.
     (18)    Dean Witter New York Tax-Free Income Fund
     (19)    Dean Witter Tax-Exempt Securities Trust
     (20)    Dean Witter California Tax-Free Income Fund
     (21)    Dean Witter Limited Term Municipal Trust
     (22)    Dean Witter Natural Resource Development Securities Inc.
     (23)    Dean Witter World Wide Income Trust
     (24)    Dean Witter Utilities Fund
     (25)    Dean Witter Strategist Fund
     (26)    Dean Witter New York Municipal Money Market Trust
     (27)    Dean Witter Intermediate Income Securities
     (28)    Prime Income Trust
     (29)    Dean Witter European Growth Fund Inc.
     (30)    Dean Witter Developing Growth Securities Trust
     (31)    Dean Witter Precious Metals and Minerals Trust
     (32)    Dean Witter Pacific Growth Fund Inc.
     (33)    Dean Witter Multi-State Municipal Series Trust
     (34)    Dean Witter Federal Securities Trust
     (35)    Dean Witter Short-Term U.S. Treasury Trust
     (36)    Dean Witter Diversified Income Trust
     (37)    Dean Witter Health Sciences Trust
     (38)    Dean Witter Global Dividend Growth Securities
     (39)    Dean Witter American Value Fund
     (40)    Dean Witter U.S. Government Money Market Trust 
     (41)    Dean Witter Global Short-Term Income Fund Inc.
     (42)    Dean Witter Value-Added Market Series
     (43)    Dean Witter Global Utilities Fund
     (44)    Dean Witter International SmallCap Fund

                                      13
<PAGE>

     (45)    Dean Witter Balanced Growth Fund
     (46)    Dean Witter Balanced Income Fund
     (47)    Dean Witter Hawaii Municipal Trust
     (48)    Dean Witter Variable Investment Series
     (49)    Dean Witter Capital Appreciation Fund
     (50)    Dean Witter Intermediate Term U.S. Treasury Trust
     (51)    Dean Witter Information Fund
     (52)    Dean Witter Japan Fund
     (53)    Dean Witter Income Builder Fund
     (54)    Dean Witter Special Value Fund
     (55)    Dean Witter Financial Services Trust
     (56)    Dean Witter Market Leader Trust
     (57)    Dean Witter S&P 500 Index Fund
     (58)    Dean Witter Fund of Funds
     (59)    Morgan Stanley Dean Witter Competitive Edge Fund
     (60)    Morgan Stanley Dean Witter Growth Fund
     (61)    Morgan Stanley Dean Witter Mid-Cap Dividend Growth Securities
     (1)     TCW/DW North American Government Income Trust
     (2)     TCW/DW Latin American Growth Fund
     (3)     TCW/DW Income and Growth Fund
     (4)     TCW/DW SmallCap Growth Fund
     (5)     TCW/DW Total Return Trust
     (6)     TCW/DW Mid-Cap Equity Trust
     (7)     TCW/DW Global Telecom Trust
     (8)     TCW/DW Emerging Markets Trust

     (b)   The following information is given regarding directors and officers
           of Distributors not listed in Item 28 above. The principal address
           of Distributors is Two World Trade Center, New York, New York 10048.
           None of the following persons has any position or office with the
           Registrant.

Name                           Positions and Office with Distributors
- ----                           --------------------------------------

Fredrick K. Kubler             Senior Vice President, Assistant
                               Secretary and Chief Compliance Officer.

Michael T. Gregg               Vice President and Assistant Secretary.


Item 30.  Location of Accounts and Records

All accounts, books and other documents required to be maintained by Section
31(a) of the Investment Company Act of 1940 and the Rules thereunder are
maintained by the Investment Manager at its offices, except records relating to
holders of shares issued by the Registrant, which are maintained by the
Registrant's Transfer Agent, at its place of business as shown in the
prospectus.

Item 31.  Management Services

Registrant is not a party to any such management-related service contract.

                                      14
<PAGE>

Item 32.  Undertakings

Registrant hereby undertakes to furnish each person to whom a prospectus is
delivered with a copy of the Registrant's latest annual report to shareholders,
upon request and without charge.

                                      15
<PAGE>

                                   SIGNATURES


         Pursuant to the requirements of the Securities Act of 1933 and the
Investment Company Act of 1940, the Registrant certifies that it meets all of
the requirements for effectiveness of this Registration Statement pursuant to
Rule 485(b) under the Securities Act of 1933 and has duly caused this
Post-Effective Amendment to the Registration Statement to be signed on its
behalf by the undersigned, thereunto duly authorized, in the City of New York
and State of New York on the 30th day of March, 1998.

                                            DEAN WITTER S&P 500 INDEX FUND

                                            By /s/ Barry Fink
                                              ---------------------------------
                                                   Barry Fink
                                                   Vice President and Secretary

         Pursuant to the requirements of the Securities Act of 1933, this
Post-Effective Amendment No. 1 has been signed below by the following persons
in the capacities and on the dates indicated.

      Signatures                                Title                   Date

(1) Principal Executive Officer           President, Chief
                                          Executive Officer,
                                          Trustee and Chairman
By  /s/ Charles A. Fiumefreddo                                        03/30/98
   -----------------------------
        Charles A. Fiumefreddo

(2) Principal Financial Officer           Treasurer and Principal
                                          Accounting Officer

By  /s/ Thomas F. Caloia                                               03/30/98
   -----------------------------
        Thomas F. Caloia

(3) Majority of the Trustees

    Charles A. Fiumefreddo (Chairman)
    Philip J. Purcell

By  /s/ Barry Fink                                                     03/30/98
   -----------------------------
        Barry Fink
        Attorney-in-Fact

    Michael Bozic       Manuel H. Johnson
    Edwin J. Garn       Michael E. Nugent
    John R. Haire       John L. Schroeder
    Wayne E. Hedien

By  /s/ David M. Butowsky                                              03/30/98
   -----------------------------
        David M. Butowsky
        Attorney-in-Fact

<PAGE>

                         DEAN WITTER S&P 500 INDEX FUND
                                 EXHIBIT INDEX

        2.  Form of Amended and Restated By-Laws of the Registrant.

        8.  Form of Transfer Agency and Service Agreement between the
            Registrant and Dean Witter Trust FSB.

       11.  Consent of Independent Accountants.

       16.  Schedules for Computations of Performance Quotations.

       27.  Financial Data Schedules.

    Other.  Power of Attorney.


<PAGE>

                                    BY-LAWS

                                       OF

                         DEAN WITTER S&P 500 INDEX FUND

                  AMENDED AND RESTATED AS OF OCTOBER 23, 1997

                                   ARTICLE I
                                  DEFINITIONS

   The terms "Commission," "Declaration," "Distributor," "Investment 
Adviser," "Majority Shareholder Vote," "1940 Act," "Shareholder," "Shares," 
"Transfer Agent," "Trust," "Trust Property," and "Trustees" have the 
respective meanings given them in the Declaration of Trust of Dean Witter S&P 
500 Index Fund dated June 18, 1997. 

                                  ARTICLE II 
                                   OFFICES 

   SECTION 2.1. Principal Office. Until changed by the Trustees, the 
principal office of the Trust in the Commonwealth of Massachusetts shall be 
in the City of Boston, County of Suffolk. 

   SECTION 2.2. Other Offices. In addition to its principal office in the 
Commonwealth of Massachusetts, the Trust may have an office or offices in the 
City of New York, State of New York, and at such other places within and 
without the Commonwealth as the Trustees may from time to time designate or 
the business of the Trust may require. 

                                 ARTICLE III 
                            SHAREHOLDERS' MEETINGS 

   SECTION 3.1. Place of Meetings. Meetings of Shareholders shall be held at 
such place, within or without the Commonwealth of Massachusetts, as may be 
designated from time to time by the Trustees. 

   SECTION 3.2. Meetings. Meetings of Shareholders of the Trust shall be held 
whenever called by the Trustees or the President of the Trust and whenever 
election of a Trustee or Trustees by Shareholders is required by the 
provisions of Section 16(a) of the 1940 Act, for that purpose. Meetings of 
Shareholders shall also be called by the Secretary upon the written request 
of the holders of Shares entitled to vote as otherwise required by Section 
16(c) of the 1940 Act and to the extent required by the corporate or business 
statute of any state in which the Shares of the Trust are sold, as made 
applicable to the Trust by the provisions of Section 2.3 of the Declaration. 
Such request shall state the purpose or purposes of such meeting and the 
matters proposed to be acted on thereat. Except to the extent otherwise 
required by Section 16(c) of the 1940 Act, as made applicable to the Trust by 
the provisions of Section 2.3 of the Declaration, the Secretary shall inform 
such Shareholders of the reasonable estimated cost of preparing and mailing 
such notice of the meeting, and upon payment to the Trust of such costs, the 
Secretary shall give notice stating the purpose or purposes of the meeting to 
all entitled to vote at such meeting. No meeting need be called upon the 
request of the holders of Shares entitled to cast less than a majority of all 
votes entitled to be cast at such meeting, to consider any matter which is 
substantially the same as a matter voted upon at any meeting of Shareholders 
held during the preceding twelve months. 

   SECTION 3.3. Notice of Meetings. Written or printed notice of every 
Shareholders' meeting stating the place, date, and purpose or purposes 
thereof, shall be given by the Secretary not less than ten (10) nor more than 
ninety (90) days before such meeting to each Shareholder entitled to vote at 
such meeting. Such notice shall be deemed to be given when deposited in the 
United States mail, postage prepaid, directed to the Shareholder at his 
address as it appears on the records of the Trust. 

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   SECTION 3.4. Quorum and Adjournment of Meetings. Except as otherwise 
provided by law, by the Declaration or by these By-Laws, at all meetings of 
Shareholders, the holders of a majority of the Shares issued and outstanding 
and entitled to vote thereat, present in person or represented by proxy, 
shall be requisite and shall constitute a quorum for the transaction of 
business. In the absence of a quorum, the Shareholders present or represented 
by proxy and entitled to vote thereat shall have the power to adjourn the 
meeting from time to time. The Shareholders present in person or represented 
by proxy at any meeting and entitled to vote thereat also shall have the 
power to adjourn the meeting from time to time if the vote required to 
approve or reject any proposal described in the original notice of such 
meeting is not obtained (with proxies being voted for or against adjournment 
consistent with the votes for and against the proposal for which the required 
vote has not been obtained). The affirmative vote of the holders of a 
majority of the Shares then present in person or represented by proxy shall 
be required to adjourn any meeting. Any adjourned meeting may be reconvened 
without further notice or change in record date. At any reconvened meeting at 
which a quorum shall be present, any business may be transacted that might 
have been transacted at the meeting as originally called. 

   SECTION 3.5. Voting Rights, Proxies. At each meeting of Shareholders, each 
holder of record of Shares entitled to vote thereat shall be entitled to one 
vote in person or by proxy, executed in writing by the Shareholder or his 
duly authorized attorney-in-fact, for each Share of beneficial interest of 
the Trust and for the fractional portion of one vote for each fractional 
Share entitled to vote so registered in his name on the records of the Trust 
on the date fixed as the record date for the determination of Shareholders 
entitled to vote at such meeting. No proxy shall be valid after eleven months 
from its date, unless otherwise provided in the proxy. At all meetings of 
Shareholders, unless the voting is conducted by inspectors, all questions 
relating to the qualification of voters and the validity of proxies and the 
acceptance or rejection of votes shall be decided by the chairman of the 
meeting. Pursuant to a resolution of a majority of the Trustees, proxies may 
be solicited in the name of one or more Trustees or Officers of the Trust. 

   SECTION 3.6. Vote Required. Except as otherwise provided by law, by the 
Declaration of Trust, or by these By-Laws, at each meeting of Shareholders at 
which a quorum is present, all matters shall be decided by Majority 
Shareholder Vote. 

   SECTION 3.7. Inspectors of Election. In advance of any meeting of 
Shareholders, the Trustees may appoint Inspectors of Election to act at the 
meeting or any adjournment thereof. If Inspectors of Election are not so 
appointed, the chairman of any meeting of Shareholders may, and on the 
request of any Shareholder or his proxy shall, appoint Inspectors of Election 
of the meeting. In case any person appointed as Inspector fails to appear or 
fails or refuses to act, the vacancy may be filled by appointment made by the 
Trustees in advance of the convening of the meeting or at the meeting by the 
person acting as chairman. The Inspectors of Election shall determine the 
number of Shares outstanding, the Shares represented at the meeting, the 
existence of a quorum, the authenticity, validity and effect of proxies, 
shall receive votes, ballots or consents, shall hear and determine all 
challenges and questions in any way arising in connection with the right to 
vote, shall count and tabulate all votes or consents, determine the results, 
and do such other acts as may be proper to conduct the election or vote with 
fairness to all Shareholders. On request of the chairman of the meeting, or 
of any Shareholder or his proxy, the Inspectors of Election shall make a 
report in writing of any challenge or question or matter determined by them 
and shall execute a certificate of any facts found by them. 

   SECTION 3.8. Inspection of Books and Records. Shareholders shall have such 
rights and procedures of inspection of the books and records of the Trust as 
are granted to Shareholders under Section 32 of the Corporations Law of the 
State of Massachusetts. 

   SECTION 3.9. Action by Shareholders Without Meeting. Except as otherwise 
provided by law, the provisions of these By-Laws relating to notices and 
meetings to the contrary notwithstanding, any action required or permitted to 
be taken at any meeting of Shareholders may be taken without a meeting if a 
majority of the Shareholders entitled to vote upon the action consent to the 
action in writing and such consents are filed with the records of the Trust. 
Such consent shall be treated for all purposes as a vote taken at a meeting 
of Shareholders. 

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<PAGE>

   SECTION 3.10. Presence at Meetings. Presence at meetings of Shareholders 
requires physical attendance by the Shareholder or his or her proxy at the 
meeting site and does not encompass attendance by telephonic or other 
electronic means. 

                                  ARTICLE IV 
                                   TRUSTEES 

   SECTION 4.1. Meetings of the Trustees. The Trustees may in their 
discretion provide for regular or special meetings of the Trustees. Regular 
meetings of the Trustees may be held at such time and place as shall be 
determined from time to time by the Trustees without further notice. Special 
meetings of the Trustees may be called at any time by the Chairman and shall 
be called by the Chairman or the Secretary upon the written request of any 
two (2) Trustees. 

   SECTION 4.2. Notice of Special Meetings. Written notice of special 
meetings of the Trustees, stating the place, date and time thereof, shall be 
given not less than two (2) days before such meeting to each Trustee, 
personally, by telegram, by mail, or by leaving such notice at his place of 
residence or usual place of business. If mailed, such notice shall be deemed 
to be given when deposited in the United States mail, postage prepaid, 
directed to the Trustee at his address as it appears on the records of the 
Trust. Subject to the provisions of the 1940 Act, notice or waiver of notice 
need not specify the purpose of any special meeting. 

   SECTION 4.3. Telephone Meetings. Subject to the provisions of the 1940 
Act, any Trustee, or any member or members of any committee designated by the 
Trustees, may participate in a meeting of the Trustees, or any such 
committee, as the case may be, by means of a conference telephone or similar 
communications equipment if all persons participating in the meeting can hear 
each other at the same time. Participation in a meeting by these means 
constitutes presence in person at the meeting. 

   SECTION 4.4. Quorum, Voting and Adjournment of Meetings. At all meetings 
of the Trustees, a majority of the Trustees shall be requisite to and shall 
constitute a quorum for the transaction of business. If a quorum is present, 
the affirmative vote of a majority of the Trustees present shall be the act 
of the Trustees, unless the concurrence of a greater proportion is expressly 
required for such action by law, the Declaration or these By-Laws. If at any 
meeting of the Trustees there be less than a quorum present, the Trustees 
present thereat may adjourn the meeting from time to time, without notice 
other than announcement at the meeting, until a quorum shall have been 
obtained. 

   SECTION 4.5. Action by Trustees Without Meeting. The provisions of these 
By-Laws covering notices and meetings to the contrary notwithstanding, and 
except as required by law, any action required or permitted to be taken at 
any meeting of the Trustees may be taken without a meeting if a consent in 
writing setting forth the action shall be signed by all of the Trustees 
entitled to vote upon the action and such written consent is filed with the 
minutes of proceedings of the Trustees. 

   SECTION 4.6. Expenses and Fees. Each Trustee may be allowed expenses, if 
any, for attendance at each regular or special meeting of the Trustees, and 
each Trustee who is not an officer or employee of the Trust or of its 
investment manager or underwriter or of any corporate affiliate of any of 
said persons shall receive for services rendered as a Trustee of the Trust 
such compensation as may be fixed by the Trustees. Nothing herein contained 
shall be construed to preclude any Trustee from serving the Trust in any 
other capacity and receiving compensation therefor. 

   SECTION 4.7. Execution of Instruments and Documents and Signing of Checks 
and Other Obligations and Transfers. All instruments, documents and other 
papers shall be executed in the name and on behalf of the Trust and all 
checks, notes, drafts and other obligations for the payment of money by the 
Trust shall be signed, and all transfer of securities standing in the name of 
the Trust shall be executed, by the Chairman, the President, any Vice 
President or the Treasurer or by any one or more officers or agents of the 
Trust as shall be designated for that purpose by vote of the Trustees; 
notwithstanding the above, nothing in this Section 4.7 shall be deemed to 
preclude the electronic authorization, by designated persons, of the Trust's 
Custodian (as described herein in Section 9.1) to transfer assets of the 
Trust, as provided for herein in Section 9.1. 

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   SECTION 4.8. Indemnification of Trustees, Officers, Employees and 
Agents. (a) The Trust shall indemnify any person who was or is a party or is 
threatened to be made a party to any threatened, pending, or completed 
action, suit or proceeding, whether civil, criminal, administrative or 
investigative (other than an action by or in the right of the Trust) by 
reason of the fact that he is or was a Trustee, officer, employee, or agent 
of the Trust. The indemnification shall be against expenses, including 
attorneys' fees, judgments, fines, and amounts paid in settlement, actually 
and reasonably incurred by him in connection with the action, suit, or 
proceeding, if he acted in good faith and in a manner he reasonably believed 
to be in or not opposed to the best interests of the Trust, and, with respect 
to any criminal action or proceeding, had no reasonable cause to believe his 
conduct was unlawful. The termination of any action, suit or proceeding by 
judgment, order, settlement, conviction, or upon a plea of nolo contendere or 
its equivalent, shall not, of itself, create a presumption that the person 
did not act in good faith and in a manner which he reasonably believed to be 
in or not opposed to the best interests of the Trust, and, with respect to 
any criminal action or proceeding, had reasonable cause to believe that his 
conduct was unlawful. 

   (b) The Trust shall indemnify any person who was or is a party or is 
threatened to be made a party to any threatened, pending or completed action 
or suit by or on behalf of the Trust to obtain a judgment or decree in its 
favor by reason of the fact that he is or was a Trustee, officer, employee, 
or agent of the Trust. The indemnification shall be against expenses, 
including attorneys' fees actually and reasonably incurred by him in 
connection with the defense or settlement of the action or suit, if he acted 
in good faith and in a manner he reasonably believed to be in or not opposed 
to the best interests of the Trust; except that no indemnification shall be 
made in respect of any claim, issue, or matter as to which the person has 
been adjudged to be liable for negligence or misconduct in the performance of 
his duty to the Trust, except to the extent that the court in which the 
action or suit was brought, or a court of equity in the county in which the 
Trust has its principal office, determines upon application that, despite the 
adjudication of liability but in view of all circumstances of the case, the 
person is fairly and reasonably entitled to indemnity for those expenses 
which the court shall deem proper, provided such Trustee, officer, employee 
or agent is not adjudged to be liable by reason of his willful misfeasance, 
bad faith, gross negligence or reckless disregard of the duties involved in 
the conduct of his office. 

   (c) To the extent that a Trustee, officer, employee, or agent of the Trust 
has been successful on the merits or otherwise in defense of any action, suit 
or proceeding referred to in subsection (a) or (b) or in defense of any 
claim, issue or matter therein, he shall be indemnified against expenses, 
including attorneys' fees, actually and reasonably incurred by him in 
connection therewith. 

   (d) (1) Unless a court orders otherwise, any indemnification under 
subsections (a) or (b) of this section may be made by the Trust only as 
authorized in the specific case after a determination that indemnification of 
the Trustee, officer, employee, or agent is proper in the circumstances 
because he has met the applicable standard of conduct set forth in 
subsections (a) or (b). 

       (2) The determination shall be made: 

          (i) By the Trustees, by a majority vote of a quorum which consists of 
    Trustees who were not parties to the action, suit or proceeding; or 

          (ii) If the required quorum is not obtainable, or if a quorum of 
    disinterested Trustees so directs, by independent legal counsel in a 
    written opinion; or 

           (iii) By the Shareholders. 

       (3) Notwithstanding any provision of this Section 4.8, no person shall 
    be entitled to indemnification for any liability, whether or not there is 
    an adjudication of liability, arising by reason of willful misfeasance, 
    bad faith, gross negligence, or reckless disregard of duties as described 
    in Section 17(h) and (i) of the Investment Company Act of 1940 
    ("disabling conduct"). A person shall be deemed not liable by reason of 
    disabling conduct if, either: 

           (i) a final decision on the merits is made by a court or other body 
    before whom the proceeding was brought that the person to be indemnified 
    ("indemnitee") was not liable by reason of disabling conduct; or 

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<PAGE>

           (ii) in the absence of such a decision, a reasonable determination, 
    based upon a review of the facts, that the indemnitee was not liable by 
    reason of disabling conduct, is made by either-- 

             (A) a majority of a quorum of Trustees who are neither "interested 
         persons" of the Trust, as defined in Section 2(a)(19) of the 
         Investment Company Act of 1940, nor parties to the action, suit or 
         proceeding, or 

             (B) an independent legal counsel in a written opinion. 

   (e) Expenses, including attorneys' fees, incurred by a Trustee, officer, 
employee or agent of the Trust in defending a civil or criminal action, suit 
or proceeding may be paid by the Trust in advance of the final disposition 
thereof if: 

        (1) authorized in the specific case by the Trustees; and 

        (2) the Trust receives an undertaking by or on behalf of the Trustee, 
    officer, employee or agent of the Trust to repay the advance if it is not 
    ultimately determined that such person is entitled to be indemnified by 
    the Trust; and 

        (3) either, (i) such person provides a security for his undertaking, 
    or 

           (ii) the Trust is insured against losses by reason of any lawful 
         advances, or 

          (iii) a determination, based on a review of readily available 
         facts, that there is reason to believe that such person ultimately 
         will be found entitled to indemnification, is made by either-- 

              (A) a majority of a quorum which consists of Trustees who are 
             neither "interested persons" of the Trust, as defined in Section 
             2(a)(19) of the 1940 Act, nor parties to the action, suit or 
             proceeding, or 

              (B) an independent legal counsel in a written opinion. 

   (f) The indemnification provided by this Section shall not be deemed 
exclusive of any other rights to which a person may be entitled under any 
by-law, agreement, vote of Shareholders or disinterested Trustees or 
otherwise, both as to action in his official capacity and as to action in 
another capacity while holding the office, and shall continue as to a person 
who has ceased to be a Trustee, officer, employee, or agent and inure to the 
benefit of the heirs, executors and administrators of such person; provided 
that no person may satisfy any right of indemnity or reimbursement granted 
herein or to which he may be otherwise entitled except out of the property of 
the Trust, and no Shareholder shall be personally liable with respect to any 
claim for indemnity or reimbursement or otherwise. 

   (g) The Trust may purchase and maintain insurance on behalf of any person 
who is or was a Trustee, officer, employee, or agent of the Trust, against 
any liability asserted against him and incurred by him in any such capacity, 
or arising out of his status as such. However, in no event will the Trust 
purchase insurance to indemnify any officer or Trustee against liability for 
any act for which the Trust itself is not permitted to indemnify him. 

   (h) Nothing contained in this Section shall be construed to protect any 
Trustee or officer of the Trust against any liability to the Trust or to its 
security holders to which he would otherwise be subject by reason of willful 
misfeasance, bad faith, gross negligence or reckless disregard of the duties 
involved in the conduct of his office. 

                                  ARTICLE V 
                                  COMMITTEES 

   SECTION 5.1. Executive and Other Committees. The Trustees, by resolution 
adopted by a majority of the Trustees, may designate an Executive Committee 
and/or committees, each committee to consist of two (2) or more of the 
Trustees of the Trust and may delegate to such committees, in the intervals 
between meetings of the Trustees, any or all of the powers of the Trustees in 
the management of the business and affairs of the Trust. In the absence of 
any member of any such committee, the members thereof present 

                                       5
<PAGE>

at any meeting, whether or not they constitute a quorum, may appoint a 
Trustee to act in place of such absent member. Each such committee shall keep 
a record of its proceedings. 

   The Executive Committee and any other committee shall fix its own rules or 
procedure, but the presence of at least fifty percent (50%) of the members of 
the whole committee shall in each case be necessary to constitute a quorum of 
the committee and the affirmative vote of the majority of the members of the 
committee present at the meeting shall be necessary to take action. 

   All actions of the Executive Committee shall be reported to the Trustees 
at the meeting thereof next succeeding to the taking of such action. 

   SECTION 5.2. Advisory Committee. The Trustees may appoint an advisory 
committee which shall be composed of persons who do not serve the Trust in 
any other capacity and which shall have advisory functions with respect to 
the investments of the Trust but which shall have no power to determine that 
any security or other investment shall be purchased, sold or otherwise 
disposed of by the Trust. The number of persons constituting any such 
advisory committee shall be determined from time to time by the Trustees. The 
members of any such advisory committee may receive compensation for their 
services and may be allowed such fees and expenses for the attendance at 
meetings as the Trustees may from time to time determine to be appropriate. 

   SECTION 5.3. Committee Action Without Meeting. The provisions of these 
By-Laws covering notices and meetings to the contrary notwithstanding, and 
except as required by law, any action required or permitted to be taken at 
any meeting of any Committee of the Trustees appointed pursuant to Section 
5.1 of these By-Laws may be taken without a meeting if a consent in writing 
setting forth the action shall be signed by all members of the Committee 
entitled to vote upon the action and such written consent is filed with the 
records of the proceedings of the Committee. 

                                  ARTICLE VI 
                                   OFFICERS 

   SECTION 6.1. Executive Officers. The executive officers of the Trust shall 
be a Chairman, a President, one or more Vice Presidents, a Secretary and a 
Treasurer. The Chairman shall be selected from among the Trustees but none of 
the other executive officers need be a Trustee. Two or more offices, except 
those of President and any Vice President, may be held by the same person, 
but no officer shall execute, acknowledge or verify any instrument in more 
than one capacity. The executive officers of the Trust shall be elected 
annually by the Trustees and each executive officer so elected shall hold 
office until his successor is elected and has qualified. 

   SECTION 6.2. Other Officers and Agents. The Trustees may also elect one or 
more Assistant Vice Presidents, Assistant Secretaries and Assistant 
Treasurers and may elect, or may delegate to the Chairman the power to 
appoint, such other officers and agents as the Trustees shall at any time or 
from time to time deem advisable. 

   SECTION 6.3. Term and Removal and Vacancies. Each officer of the Trust 
shall hold office until his successor is elected and has qualified. Any 
officer or agent of the Trust may be removed by the Trustees whenever, in 
their judgment, the best interests of the Trust will be served thereby, but 
such removal shall be without prejudice to the contractual rights, if any, of 
the person so removed. 

   SECTION 6.4. Compensation of Officers. The compensation of officers and 
agents of the Trust shall be fixed by the Trustees, or by the Chairman to the 
extent provided by the Trustees with respect to officers appointed by the 
Chairman. 

   SECTION 6.5. Power and Duties. All officers and agents of the Trust, as 
between themselves and the Trust, shall have such authority and perform such 
duties in the management of the Trust as may be provided in or pursuant to 
these By-Laws, or to the extent not so provided, as may be prescribed by the 
Trustees; provided, that no rights of any third party shall be affected or 
impaired by any such By-Law or resolution of the Trustees unless he has 
knowledge thereof. 

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<PAGE>

   SECTION 6.6. The Chairman. (a) The Chairman shall be the chief executive 
officer of the Trust; he shall preside at all meetings of the Shareholders 
and of the Trustees; he shall have general and active management of the 
business of the Trust, shall see that all orders and resolutions of the 
Trustees are carried into effect, and, in connection therewith, shall be 
authorized to delegate to the President or to one or more Vice Presidents 
such of his powers and duties at such times and in such manner as he may deem 
advisable; he shall be a signatory on all Annual and Semi-Annual Reports as 
may be sent to Shareholders, and he shall perform such other duties as the 
Trustees may from time to time prescribe. 

   (b) In the absence of the Chairman, the Board shall determine who shall 
preside at all meetings of the Shareholders and the Board of Trustees. 

   SECTION 6.7. The President. The President shall perform such duties as the 
Board of Trustees and the Chairman may from time to time prescribe. 

   SECTION 6.8. The Vice Presidents. The Vice Presidents shall be of such 
number and shall have such titles as may be determined from time to time by 
the Trustees. The Vice President, or, if there be more than one, the Vice 
Presidents in the order of their seniority as may be determined from time to 
time by the Trustees or the Chairman, shall, in the absence or disability of 
the President, exercise the powers and perform the duties of the President, 
and he or they shall perform such other duties as the Trustees or the 
Chairman may from time to time prescribe. 

   SECTION 6.9. The Assistant Vice Presidents. The Assistant Vice President, 
or, if there be more than one, the Assistant Vice Presidents, shall perform 
such duties and have such powers as may be assigned them from time to time by 
the Trustees or the Chairman. 

   SECTION 6.10. The Secretary. The Secretary shall attend all meetings of 
the Trustees and all meetings of the Shareholders and record all the 
proceedings of the meetings of the Shareholders and of the Trustees in a book 
to be kept for that purpose, and shall perform like duties for the standing 
committees when required. He shall give, or cause to be given, notice of all 
meetings of the Shareholders and special meetings of the Trustees, and shall 
perform such other duties and have such powers as the Trustees, or the 
Chairman, may from time to time prescribe. He shall keep in safe custody the 
seal of the Trust and affix or cause the same to be affixed to any instrument 
requiring it, and, when so affixed, it shall be attested by his signature or 
by the signature of an Assistant Secretary. 

   SECTION 6.11. The Assistant Secretaries. The Assistant Secretary, or, if 
there be more than one, the Assistant Secretaries in the order determined by 
the Trustees or the Chairman, shall, in the absence or disability of the 
Secretary, perform the duties and exercise the powers of the Secretary and 
shall perform such duties and have such other powers as the Trustees or the 
Chairman may from time to time prescribe. 

   SECTION 6.12. The Treasurer. The Treasurer shall be the chief financial 
officer of the Trust. He shall keep or cause to be kept full and accurate 
accounts of receipts and disbursements in books belonging to the Trust, and 
he shall render to the Trustees and the Chairman, whenever any of them 
require it, an account of his transactions as Treasurer and of the financial 
condition of the Trust; and he shall perform such other duties as the 
Trustees, or the Chairman, may from time to time prescribe. 

   SECTION 6.13. The Assistant Treasurers. The Assistant Treasurer, or, if 
there shall be more than one, the Assistant Treasurers in the order 
determined by the Trustees or the Chairman, shall, in the absence or 
disability of the Treasurer, perform the duties and exercise the powers of 
the Treasurer and shall perform such other duties and have such other powers 
as the Trustees, or the Chairman, may from time to time prescribe. 

   SECTION 6.14. Delegation of Duties. Whenever an officer is absent or 
disabled, or whenever for any reason the Trustees may deem it desirable, the 
Trustees may delegate the powers and duties of an officer or officers to any 
other officer or officers or to any Trustee or Trustees. 

                                       7
<PAGE>

                                  ARTICLE VII
                          DIVIDENDS AND DISTRIBUTIONS

   Subject to any applicable provisions of law and the Declaration, dividends 
and distributions upon the Shares may be declared at such intervals as the 
Trustees may determine, in cash, in securities or other property, or in 
Shares, from any sources permitted by law, all as the Trustees shall from 
time to time determine. 

   Inasmuch as the computation of net income and net profits from the sales 
of securities or other properties for federal income tax purposes may vary 
from the computation thereof on the records of the Trust, the Trustees shall 
have power, in their discretion, to distribute as income dividends and as 
capital gain distributions, respectively, amounts sufficient to enable the 
Trust to avoid or reduce liability for federal income taxes. 

                                 ARTICLE VIII 
                            CERTIFICATES OF SHARES 

   SECTION 8.1. Certificates of Shares. Certificates for Shares of each 
series or class of Shares shall be in such form and of such design as the 
Trustees shall approve, subject to the right of the Trustees to change such 
form and design at any time or from time to time, and shall be entered in the 
records of the Trust as they are issued. Each such certificate shall bear a 
distinguishing number; shall exhibit the holders' name and certify the number 
of full Shares owned by such holder; shall be signed by or in the name of the 
Trust by the Chairman, the President, or a Vice President, and countersigned 
by the Secretary or an Assistant Secretary or the Treasurer and an Assistant 
Treasurer of the Trust; shall be sealed with the seal; and shall contain such 
recitals as may be required by law. Where any certificate is signed by a 
Transfer Agent or by a Registrar, the signature of such officers and the seal 
may be facsimile, printed or engraved. The Trust may, at its option, 
determine not to issue a certificate or certificates to evidence Shares owned 
of record by any Shareholder. 

   In case any officer or officers who shall have signed, or whose facsimile 
signature or signatures shall appear on, any such certificate or certificates 
shall cease to be such officer or officers of the Trust, whether because of 
death, resignation or otherwise, before such certificate or certificates 
shall have been delivered by the Trust, such certificate or certificates 
shall, nevertheless, be adopted by the Trust and be issued and delivered as 
though the person or persons who signed such certificate or certificates or 
whose facsimile signature or signatures shall appear therein had not ceased 
to be such officer or officers of the Trust. 

   No certificate shall be issued for any share until such share is fully 
paid. 

   SECTION 8.2. Lost, Stolen, Destroyed and Mutilated Certificates. The 
Trustees may direct a new certificate or certificates to be issued in place 
of any certificate or certificates theretofore issued by the Trust alleged to 
have been lost, stolen or destroyed, upon satisfactory proof of such loss, 
theft, or destruction; and the Trustees may, in their discretion, require the 
owner of the lost, stolen or destroyed certificate, or his legal 
representative, to give to the Trust and to such Registrar, Transfer Agent 
and/or Transfer Clerk as may be authorized or required to countersign such 
new certificate or certificates, a bond in such sum and of such type as they 
may direct, and with such surety or sureties, as they may direct, as 
indemnity against any claim that may be against them or any of them on 
account of or in connection with the alleged loss, theft or destruction of 
any such certificate. 

                                  ARTICLE IX 
                                  CUSTODIAN 

   SECTION 9.1. Appointment and Duties. The Trust shall at all times employ a 
bank or trust company having capital, surplus and undivided profits of at 
least five million dollars ($5,000,000) as custodian with authority as its 
agent, but subject to such restrictions, limitations and other requirements, 
if any, as may be contained in these By-Laws and the 1940 Act: 

                                       8
<PAGE>

     (1) to receive and hold the securities owned by the Trust and deliver 
    the same upon written or electronically transmitted order; 

     (2) to receive and receipt for any moneys due to the Trust and deposit 
    the same in its own banking department or elsewhere as the Trustees may 
    direct; 

     (3) to disburse such funds upon orders or vouchers; 

all upon such basis of compensation as may be agreed upon between the 
Trustees and the custodian. If so directed by a Majority Shareholder Vote, 
the custodian shall deliver and pay over all property of the Trust held by it 
as specified in such vote. 

   The Trustees may also authorize the custodian to employ one or more 
sub-custodians from time to time to perform such of the acts and services of 
the custodian and upon such terms and conditions as may be agreed upon 
between the custodian and such sub-custodian and approved by the Trustees. 

   SECTION 9.2. Central Certificate System. Subject to such rules, 
regulations and orders as the Commission may adopt, the Trustees may direct 
the custodian to deposit all or any part of the securities owned by the Trust 
in a system for the central handling of securities established by a national 
securities exchange or a national securities association registered with the 
Commission under the Securities Exchange Act of 1934, or such other person as 
may be permitted by the Commission, or otherwise in accordance with the 1940 
Act, pursuant to which system all securities of any particular class or 
series of any issuer deposited within the system are treated as fungible and 
may be transferred or pledged by bookkeeping entry without physical delivery 
of such securities, provided that all such deposits shall be subject to 
withdrawal only upon the order of the Trust. 

                                  ARTICLE X 
                               WAIVER OF NOTICE 

   Whenever any notice of the time, place or purpose of any meeting of 
Shareholders, Trustees, or of any committee is required to be given in 
accordance with law or under the provisions of the Declaration or these 
By-Laws, a waiver thereof in writing, signed by the person or persons 
entitled to such notice and filed with the records of the meeting, whether 
before or after the holding thereof, or actual attendance at the meeting of 
shareholders, Trustees or committee, as the case may be, in person, shall be 
deemed equivalent to the giving of such notice to such person. 

                                  ARTICLE XI 
                                MISCELLANEOUS 

   SECTION 11.1. Location of Books and Records. The books and records of the 
Trust may be kept outside the Commonwealth of Massachusetts at such place or 
places as the Trustees may from time to time determine, except as otherwise 
required by law. 

   SECTION 11.2. Record Date. The Trustees may fix in advance a date as the 
record date for the purpose of determining the Shareholders entitled to (i) 
receive notice of, or to vote at, any meeting of Shareholders, or (ii) 
receive payment of any dividend or the allotment of any rights, or in order 
to make a determination of Shareholders for any other proper purpose. The 
record date, in any case, shall not be more than one hundred eighty (180) 
days, and in the case of a meeting of Shareholders not less than ten (10) 
days, prior to the date on which such meeting is to be held or the date on 
which such other particular action requiring determination of Shareholders is 
to be taken, as the case may be. In the case of a meeting of Shareholders, 
the meeting date set forth in the notice to Shareholders accompanying the 
proxy statement shall be the date used for purposes of calculating the 180 
day or 10 day period, and any adjourned meeting may be reconvened without a 
change in record date. In lieu of fixing a record date, the Trustees may 
provide that the transfer books shall be closed for a stated period but not 
to exceed, in any case, twenty (20) days. If the transfer books are closed 
for the purpose of determining Shareholders entitled to notice of a vote at a 
meeting of Shareholders, such books shall be closed for at least ten (10) 
days immediately preceding the meeting. 

                                       9
<PAGE>

   SECTION 11.3. Seal. The Trustees shall adopt a seal, which shall be in 
such form and shall have such inscription thereon as the Trustees may from 
time to time provide. The seal of the Trust may be affixed to any document, 
and the seal and its attestation may be lithographed, engraved or otherwise 
printed on any document with the same force and effect as if it had been 
imprinted and attested manually in the same manner and with the same effect 
as if done by a Massachusetts business corporation under Massachusetts law. 

   SECTION 11.4. Fiscal Year. The fiscal year of the Trust shall end on such 
date as the Trustees may by resolution specify, and the Trustees may by 
resolution change such date for future fiscal years at any time and from time 
to time. 

   SECTION 11.5. Orders for Payment of Money. All orders or instructions for 
the payment of money of the Trust, and all notes or other evidences of 
indebtedness issued in the name of the Trust, shall be signed by such officer 
or officers or such other person or persons as the Trustees may from time to 
time designate, or as may be specified in or pursuant to the agreement 
between the Trust and the bank or trust company appointed as Custodian of the 
securities and funds of the Trust. 

                                 ARTICLE XII 
                     COMPLIANCE WITH FEDERAL REGULATIONS 

   The Trustees are hereby empowered to take such action as they may deem to 
be necessary, desirable or appropriate so that the Trust is or shall be in 
compliance with any federal or state statute, rule or regulation with which 
compliance by the Trust is required. 

                                 ARTICLE XIII 
                                  AMENDMENTS 

   These By-Laws may be amended, altered, or repealed, or new By-Laws may be 
adopted, (a) by a Majority Shareholder Vote, or (b) by the Trustees; 
provided, however, that no By-Law may be amended, adopted or repealed by the 
Trustees if such amendment, adoption or repeal requires, pursuant to law, the 
Declaration, or these By-Laws, a vote of the Shareholders. The Trustees shall 
in no event adopt By-Laws which are in conflict with the Declaration, and any 
apparent inconsistency shall be construed in favor of the related provisions 
in the Declaration. 

                                 ARTICLE XIV 
                             DECLARATION OF TRUST 

   The Declaration of Trust establishing Dean Witter S&P 500 Index Fund, 
dated June 18, 1997, a copy of which is on file in the office of the 
Secretary of the Commonwealth of Massachusetts, provides that the name Dean 
Witter S&P 500 Index Fund refers to the Trustees under the Declaration 
collectively as Trustees, but not as individuals or personally; and no 
Trustee, Shareholder, officer, employee or agent of Dean Witter S&P 500 Index 
Fund shall be held to any personal liability, nor shall resort be had to 
their private property for the satisfaction of any obligation or claim or 
otherwise, in connection with the affairs of said Dean Witter S&P 500 Index 
Fund, but the Trust Estate only shall be liable. 

                                       10


<PAGE>

                              AMENDED AND RESTATED
                     TRANSFER AGENCY AND SERVICE AGREEMENT

                                      WITH

                             DEAN WITTER TRUST FSB





[OPEN-END FUNDS] 

666568 

<PAGE>
                              TABLE OF CONTENTS 

<TABLE>
<CAPTION>
                                                                      PAGE 
                                                                   -------- 
<S>             <C>                                                <C>
Article 1       Terms of Appointment...............................    1 
Article 2       Fees and Expenses..................................    2 
Article 3       Representations and Warranties of DWTFSB ..........    3 
Article 4       Representations and Warranties of the Fund ........    3 
Article 5       Duty of Care and Indemnification...................    3 
Article 6       Documents and Covenants of the Fund and DWTFSB ....    4 
Article 7       Duration and Termination of Agreement..............    5 
Article 8       Assignment ........................................    5 
Article 9       Affiliations.......................................    6 
Article 10      Amendment..........................................    6 
Article 11      Applicable Law.....................................    6 
Article 12      Miscellaneous......................................    6 
Article 13      Merger of Agreement................................    7 
Article 14      Personal Liability.................................    7 
</TABLE>

                                       i
<PAGE>
          AMENDED AND RESTATED TRANSFER AGENCY AND SERVICE AGREEMENT 

   AMENDED AND RESTATED AGREEMENT made as of the 23rd day of October, 1997 by 
and between each of the Funds listed on the signature pages hereof, each of 
such Funds acting severally on its own behalf and not jointly with any of 
such other Funds (each such Fund hereinafter referred to as the "Fund"), each 
such Fund having its principal office and place of business at Two World 
Trade Center, New York, New York, 10048, and DEAN WITTER TRUST FSB 
("DWTFSB"), a federally chartered savings bank, having its principal office 
and place of business at Harborside Financial Center, Plaza Two, Jersey City, 
New Jersey 07311. 

   WHEREAS, the Fund desires to appoint DWTFSB as its transfer agent, 
dividend disbursing agent and shareholder servicing agent and DWTFSB desires 
to accept such appointment; 

   NOW THEREFORE, in consideration of the mutual covenants herein contained, 
the parties hereto agree as follows: 

Article 1 Terms of Appointment; Duties of DWTFSB 

   1.1 Subject to the terms and conditions set forth in this Agreement, the 
Fund hereby employs and appoints DWTFSB to act as, and DWTFSB agrees to act 
as, the transfer agent for each series and class of shares of the Fund, 
whether now or hereafter authorized or issued ("Shares"), dividend disbursing 
agent and shareholder servicing agent in connection with any accumulation, 
open-account or similar plans provided to the holders of such Shares 
("Shareholders") and set out in the currently effective prospectus and 
statement of additional information ("prospectus") of the Fund, including 
without limitation any periodic investment plan or periodic withdrawal 
program. 

   1.2 DWTFSB agrees that it will perform the following services: 

     (a) In accordance with procedures established from time to time by 
    agreement between the Fund and DWTFSB, DWTFSB shall: 

        (i)  Receive for acceptance, orders for the purchase of Shares, and 
       promptly deliver payment and appropriate documentation therefor to the 
       custodian of the assets of the Fund (the "Custodian"); 

        (ii) Pursuant to purchase orders, issue the appropriate number of 
       Shares and issue certificates therefor or hold such Shares in book 
       form in the appropriate Shareholder account; 

        (iii) Receive for acceptance redemption requests and redemption 
       directions and deliver the appropriate documentation therefor to the 
       Custodian; 

        (iv) At the appropriate time as and when it receives monies paid to 
       it by the Custodian with respect to any redemption, pay over or cause 
       to be paid over in the appropriate manner such monies as instructed by 
       the redeeming Shareholders; 

        (v) Effect transfers of Shares by the registered owners thereof upon 
       receipt of appropriate instructions; 

        (vi) Prepare and transmit payments for dividends and distributions 
       declared by the Fund; 

        (vii) Calculate any sales charges payable by a Shareholder on 
       purchases and/or redemptions of Shares of the Fund as such charges may 
       be reflected in the prospectus; 

        (viii) Maintain records of account for and advise the Fund and its 
       Shareholders as to the foregoing; and 

        (ix) Record the issuance of Shares of the Fund and maintain pursuant 
       to Rule 17Ad-10(e) under the Securities Exchange Act of 1934 ("1934 
       Act") a record of the total number of Shares of the Fund which are 
       authorized, based upon data provided to it by the Fund, and issued and 
       outstanding. DWTFSB shall also provide to the Fund on a regular basis 
       the total number of Shares that are authorized, issued and outstanding 
       and shall notify the Fund in case any proposed issue of Shares by the 
       Fund would result in an overissue. In case any issue of Shares 

                                       1
<PAGE>

       would result in an overissue, DWTFSB shall refuse to issue such Shares 
       and shall not countersign and issue any certificates requested for 
       such Shares. When recording the issuance of Shares, DWTFSB shall have 
       no obligation to take cognizance of any Blue Sky laws relating to the 
       issue of sale of such Shares, which functions shall be the sole 
       responsibility of the Fund. 

     (b) In addition to and not in lieu of the services set forth in the above 
    paragraph (a), DWTFSB shall: 

        (i) perform all of the customary services of a transfer agent, 
       dividend disbursing agent and, as relevant, shareholder servicing 
       agent in connection with dividend reinvestment, accumulation, 
       open-account or similar plans (including without limitation any 
       periodic investment plan or periodic withdrawal program), including 
       but not limited to, maintaining all Shareholder accounts, preparing 
       Shareholder meeting lists, mailing proxies, receiving and tabulating 
       proxies, mailing shareholder reports and prospectuses to current 
       Shareholders, withholding taxes on U.S. resident and non-resident 
       alien accounts, preparing and filing appropriate forms required with 
       respect to dividends and distributions by federal tax authorities for 
       all Shareholders, preparing and mailing confirmation forms and 
       statements of account to Shareholders for all purchases and 
       redemptions of Shares and other confirmable transactions in 
       Shareholder accounts, preparing and mailing activity statements for 
       Shareholders and providing Shareholder account information; 

        (ii) open any and all bank accounts which may be necessary or 
       appropriate in order to provide the foregoing services; and 

        (iii) provide a system that will enable the Fund to monitor the total 
       number of Shares sold in each State or other jurisdiction. 

     (c) In addition, the Fund shall: 

        (i) identify to DWTFSB in writing those transactions and assets to be 
       treated as exempt from Blue Sky reporting for each State; and 

        (ii) verify the inclusion on the system prior to activation of each 
       State in which Fund shares may be sold and thereafter monitor the 
       daily purchases and sales for shareholders in each State. The 
       responsibility of DWTFSB for the Fund's status under the securities 
       laws of any State or other jurisdiction is limited to the inclusion on 
       the system of each State as to which the Fund has informed DWTFSB that 
       shares may be sold in compliance with state securities laws and the 
       reporting of purchases and sales in each such State to the Fund as 
       provided above and as agreed from time to time by the Fund and DWTFSB. 

     (d) DWTFSB shall provide such additional services and functions not 
    specifically described herein as may be mutually agreed between DWTFSB and 
    the Fund. Procedures applicable to such services may be established from 
    time to time by agreement between the Fund and DWTFSB. 

Article 2 Fees and Expenses 

   2.1 For performance by DWTFSB pursuant to this Agreement, each Fund agrees 
to pay DWTFSB an annual maintenance fee for each Shareholder account and 
certain transactional fees, if applicable, as set out in the respective fee 
schedule attached hereto as Schedule A. Such fees and out-of-pocket expenses 
and advances identified under Section 2.2 below may be changed from time to 
time subject to mutual written agreement between the Fund and DWTFSB. 

   2.2 In addition to the fees paid under Section 2.1 above, the Fund agrees 
to reimburse DWTFSB for out of pocket expenses in connection with the 
services rendered by DWTFSB hereunder. In addition, any other expenses 
incurred by DWTFSB at the request or with the consent of the Fund will be 
reimbursed by the Fund. 

   2.3 The Fund agrees to pay all fees and reimbursable expenses within a 
reasonable period of time following the mailing of the respective billing 
notice. Postage for mailing of dividends, proxies, Fund reports and other 
mailings to all Shareholder accounts shall be advanced to DWTFSB by the Fund 
upon request prior to the mailing date of such materials. 

                                       2
<PAGE>

Article 3 Representations and Warranties of DWTFSB 

   DWTFSB represents and warrants to the Fund that: 

   3.1 It is a federally chartered savings bank whose principal office is in 
New Jersey. 

   3.2 It is and will remain registered with the U.S. Securities and Exchange 
Commission ("SEC") as a Transfer Agent pursuant to the requirements of 
Section 17A of the 1934 Act. 

   3.3 It is empowered under applicable laws and by its charter and By-Laws 
to enter into and perform this Agreement. 

   3.4 All requisite corporate proceedings have been taken to authorize it to 
enter into and perform this Agreement. 

   3.5 It has and will continue to have access to the necessary facilities, 
equipment and personnel to perform its duties and obligations under this 
Agreement. 

Article 4 Representations and Warranties of the Fund 

   The Fund represents and warrants to DWTFSB that: 

   4.1 It is a corporation duly organized and existing and in good standing 
under the laws of Delaware or Maryland or a trust duly organized and existing 
and in good standing under the laws of Massachusetts, as the case may be. 

   4.2 It is empowered under applicable laws and by its Articles of 
Incorporation or Declaration of Trust, as the case may be, and under its 
By-Laws to enter into and perform this Agreement. 

   4.3 All corporate proceedings necessary to authorize it to enter into and 
perform this Agreement have been taken. 

   4.4 It is an investment company registered with the SEC under the 
Investment Company Act of 1940, as amended (the "1940 Act"). 

   4.5 A registration statement under the Securities Act of 1933 (the "1933 
Act") is currently effective and will remain effective, and appropriate state 
securities law filings have been made and will continue to be made, with 
respect to all Shares of the Fund being offered for sale. 

Article 5 Duty of Care and Indemnification 

   5.1 DWTFSB shall not be responsible for, and the Fund shall indemnify and 
hold DWTFSB harmless from and against, any and all losses, damages, costs, 
charges, counsel fees, payments, expenses and liability arising out of or 
attributable to: 

     (a) All actions of DWTFSB or its agents or subcontractors required to be 
    taken pursuant to this Agreement, provided that such actions are taken in 
    good faith and without negligence or willful misconduct. 

     (b) The Fund's refusal or failure to comply with the terms of this 
    Agreement, or which arise out of the Fund's lack of good faith, negligence 
    or willful misconduct or which arise out of breach of any representation 
    or warranty of the Fund hereunder. 

     (c) The reliance on or use by DWTFSB or its agents or subcontractors of 
    information, records and documents which (i) are received by DWTFSB or its 
    agents or subcontractors and furnished to it by or on behalf of the Fund, 
    and (ii) have been prepared and/or maintained by the Fund or any other 
    person or firm on behalf of the Fund. 

     (d) The reliance on, or the carrying out by DWTFSB or its agents or 
    subcontractors of, any instructions or requests of the Fund. 

     (e) The offer or sale of Shares in violation of any requirement under the 
    federal securities laws or regulations or the securities or Blue Sky laws 
    of any State or other jurisdiction that notice of 

                                       3
<PAGE>

    offering of such Shares in such State or other jurisdiction or in 
    violation of any stop order or other determination or ruling by any 
    federal agency or any State or other jurisdiction with respect to the 
    offer or sale of such Shares in such State or other jurisdiction. 

   5.2 DWTFSB shall indemnify and hold the Fund harmless from or against any 
and all losses, damages, costs, charges, counsel fees, payments, expenses and 
liability arising out of or attributable to any action or failure or omission 
to act by DWTFSB as a result of the lack of good faith, negligence or willful 
misconduct of DWTFSB, its officers, employees or agents. 

   5.3 At any time, DWTFSB may apply to any officer of the Fund for 
instructions, and may consult with legal counsel to the Fund, with respect to 
any matter arising in connection with the services to be performed by DWTFSB 
under this Agreement, and DWTFSB and its agents or subcontractors shall not 
be liable and shall be indemnified by the Fund for any action taken or 
omitted by it in reliance upon such instructions or upon the opinion of such 
counsel. DWTFSB, its agents and subcontractors shall be protected and 
indemnified in acting upon any paper or document furnished by or on behalf of 
the Fund, reasonably believed to be genuine and to have been signed by the 
proper person or persons, or upon any instruction, information, data, records 
or documents provided to DWTFSB or its agents or subcontractors by machine 
readable input, telex, CRT data entry or other similar means authorized by 
the Fund, and shall not be held to have notice of any change of authority of 
any person, until receipt of written notice thereof from the Fund. DWTFSB, 
its agents and subcontractors shall also be protected and indemnified in 
recognizing stock certificates which are reasonably believed to bear the 
proper manual or facsimile signature of the officers of the Fund, and the 
proper countersignature of any former transfer agent or registrar, or of a 
co-transfer agent or co-registrar. 

   5.4 In the event either party is unable to perform its obligations under 
the terms of this Agreement because of acts of God, strikes, equipment or 
transmission failure or damage reasonably beyond its control, or other causes 
reasonably beyond its control, such party shall not be liable for damages to 
the other for any damages resulting from such failure to perform or otherwise 
from such causes. 

   5.5 Neither party to this Agreement shall be liable to the other party for 
consequential damages under any provision of this Agreement or for any act or 
failure to act hereunder. 

   5.6 In order that the indemnification provisions contained in this Article 
5 shall apply, upon the assertion of a claim for which either party may be 
required to indemnify the other, the party seeking indemnification shall 
promptly notify the other party of such assertion, and shall keep the other 
party advised with respect to all developments concerning such claim. The 
party who may be required to indemnify shall have the option to participate 
with the party seeking indemnification in the defense of such claim. The 
party seeking indemnification shall in no case confess any claim or make any 
compromise in any case in which the other party may be required to indemnify 
it except with the other party's prior written consent. 

Article 6 Documents and Covenants of the Fund and DWTFSB 

   6.1 The Fund shall promptly furnish to DWTFSB the following, unless 
previously furnished to Dean Witter Trust Company, the prior transfer agent 
of the Fund: 

     (a) If a corporation: 

        (i) A certified copy of the resolution of the Board of Directors of 
       the Fund authorizing the appointment of DWTFSB and the execution and 
       delivery of this Agreement; 

        (ii) A certified copy of the Articles of Incorporation and By-Laws of 
       the Fund and all amendments thereto; 

        (iii) Certified copies of each vote of the Board of Directors 
       designating persons authorized to give instructions on behalf of the 
       Fund and signature cards bearing the signature of any officer of the 
       Fund or any other person authorized to sign written instructions on 
       behalf of the Fund; 

        (iv) A specimen of the certificate for Shares of the Fund in the form 
       approved by the Board of Directors, with a certificate of the 
       Secretary of the Fund as to such approval; 

                                       4
<PAGE>

     (b) If a business trust: 

        (i) A certified copy of the resolution of the Board of Trustees of 
       the Fund authorizing the appointment of DWTFSB and the execution and 
       delivery of this Agreement; 

        (ii) A certified copy of the Declaration of Trust and By-Laws of the 
       Fund and all amendments thereto; 

        (iii) Certified copies of each vote of the Board of Trustees 
       designating persons authorized to give instructions on behalf of the 
       Fund and signature cards bearing the signature of any officer of the 
       Fund or any other person authorized to sign written instructions on 
       behalf of the Fund; 

        (iv) A specimen of the certificate for Shares of the Fund in the form 
       approved by the Board of Trustees, with a certificate of the Secretary 
       of the Fund as to such approval; 

     (c) The current registration statements and any amendments and 
    supplements thereto filed with the SEC pursuant to the requirements of the 
    1933 Act or the 1940 Act; 

     (d) All account application forms or other documents relating to 
    Shareholder accounts and/or relating to any plan, program or service 
    offered or to be offered by the Fund; and 

     (e) Such other certificates, documents or opinions as DWTFSB deems to be 
    appropriate or necessary for the proper performance of its duties. 

   6.2 DWTFSB hereby agrees to establish and maintain facilities and 
procedures reasonably acceptable to the Fund for safekeeping of Share 
certificates, check forms and facsimile signature imprinting devices, if any; 
and for the preparation or use, and for keeping account of, such 
certificates, forms and devices. 

   6.3 DWTFSB shall prepare and keep records relating to the services to be 
performed hereunder, in the form and manner as it may deem advisable and as 
required by applicable laws and regulations. To the extent required by 
Section 31 of the 1940 Act, and the rules and regulations thereunder, DWTFSB 
agrees that all such records prepared or maintained by DWTFSB relating to the 
services performed by DWTFSB hereunder are the property of the Fund and will 
be preserved, maintained and made available in accordance with such Section 
31 of the 1940 Act, and the rules and regulations thereunder, and will be 
surrendered promptly to the Fund on and in accordance with its request. 

   6.4 DWTFSB and the Fund agree that all books, records, information and 
data pertaining to the business of the other party which are exchanged or 
received pursuant to the negotiation or the carrying out of this Agreement 
shall remain confidential and shall not be voluntarily disclosed to any other 
person except as may be required by law or with the prior consent of DWTFSB 
and the Fund. 

   6.5 In case of any request or demands for the inspection of the 
Shareholder records of the Fund, DWTFSB will endeavor to notify the Fund and 
to secure instructions from an authorized officer of the Fund as to such 
inspection. DWTFSB reserves the right, however, to exhibit the Shareholder 
records to any person whenever it is advised by its counsel that it may be 
held liable for the failure to exhibit the Shareholder records to such 
person. 

Article 7 Duration and Termination of Agreement 

   7.1 This Agreement shall remain in full force and effect until August 1, 
2000 and from year-to-year thereafter unless terminated by either party as 
provided in Section 7.2 hereof. 

   7.2 This Agreement may be terminated by the Fund on 60 days written 
notice, and by DWTFSB on 90 days written notice, to the other party without 
payment of any penalty. 

   7.3 Should the Fund exercise its right to terminate, all out-of-pocket 
expenses associated with the movement of records and other materials will be 
borne by the Fund. Additionally, DWTFSB reserves the right to charge for any 
other reasonable fees and expenses associated with such termination. 

Article 8 Assignment 

   8.1 Except as provided in Section 8.3 below, neither this Agreement nor 
any rights or obligations hereunder may be assigned by either party without 
the written consent of the other party. 

                                       5
<PAGE>

   8.2 This Agreement shall inure to the benefit of and be binding upon the 
parties and their respective permitted successors and assigns. 

   8.3 DWTFSB may, in its sole discretion and without further consent by the 
Fund, subcontract, in whole or in part, for the performance of its 
obligations and duties hereunder with any person or entity including but not 
limited to companies which are affiliated with DWTFSB; provided, however, 
that such person or entity has and maintains the qualifications, if any, 
required to perform such obligations and duties, and that DWTFSB shall be as 
fully responsible to the Fund for the acts and omissions of any agent or 
subcontractor as it is for its own acts or omissions under this Agreement. 

Article 9 Affiliations 

   9.1 DWTFSB may now or hereafter, without the consent of or notice to the 
Fund, function as transfer agent and/or shareholder servicing agent for any 
other investment company registered with the SEC under the 1940 Act and for 
any other issuer, including without limitation any investment company whose 
adviser, administrator, sponsor or principal underwriter is or may become 
affiliated with Morgan Stanley, Dean Witter, Discover & Co. or any of its 
direct or indirect subsidiaries or affiliates. 

   9.2 It is understood and agreed that the Directors or Trustees (as the 
case may be), officers, employees, agents and shareholders of the Fund, and 
the directors, officers, employees, agents and shareholders of the Fund's 
investment adviser and/or distributor, are or may be interested in DWTFSB as 
directors, officers, employees, agents and shareholders or otherwise, and 
that the directors, officers, employees, agents and shareholders of DWTFSB 
may be interested in the Fund as Directors or Trustees (as the case may be), 
officers, employees, agents and shareholders or otherwise, or in the 
investment adviser and/or distributor as directors, officers, employees, 
agents, shareholders or otherwise. 

Article 10 Amendment 

   10.1 This Agreement may be amended or modified by a written agreement 
executed by both parties and authorized or approved by a resolution of the 
Board of Directors or the Board of Trustees (as the case may be) of the Fund. 

Article 11 Applicable Law 

   11.1 This Agreement shall be construed and the provisions thereof 
interpreted under and in accordance with the laws of the State of New York. 

Article 12 Miscellaneous 

   12.1 In the event that one or more additional investment companies managed 
or administered by Dean Witter InterCapital Inc. or any of its affiliates 
("Additional Funds") desires to retain DWTFSB to act as transfer agent, 
dividend disbursing agent and/or shareholder servicing agent, and DWTFSB 
desires to render such services, such services shall be provided pursuant to 
a letter agreement, substantially in the form of Exhibit A hereto, between 
DWTFSB and each Additional Fund. 

   12.2 In the event of an alleged loss or destruction of any Share 
certificate, no new certificate shall be issued in lieu thereof, unless there 
shall first be furnished to DWTFSB an affidavit of loss or non-receipt by the 
holder of Shares with respect to which a certificate has been lost or 
destroyed, supported by an appropriate bond satisfactory to DWTFSB and the 
Fund issued by a surety company satisfactory to DWTFSB, except that DWTFSB 
may accept an affidavit of loss and indemnity agreement executed by the 
registered holder (or legal representative) without surety in such form as 
DWTFSB deems appropriate indemnifying DWTFSB and the Fund for the issuance of 
a replacement certificate, in cases where the alleged loss is in the amount 
of $1,000 or less. 

   12.3 In the event that any check or other order for payment of money on 
the account of any Shareholder or new investor is returned unpaid for any 
reason, DWTFSB will (a) give prompt notification to the Fund's distributor 
("Distributor") (or to the Fund if the Fund acts as its own distributor) of 
such non-payment; and (b) take such other action, including imposition of a 
reasonable processing or handling fee, as DWTFSB may, in its sole discretion, 
deem appropriate or as the Fund and, if applicable, the Distributor may 
instruct DWTFSB. 

                                       6
<PAGE>

   12.4 Any notice or other instrument authorized or required by this 
Agreement to be given in writing to the Fund or to DWTFSB shall be 
sufficiently given if addressed to that party and received by it at its 
office set forth below or at such other place as it may from time to time 
designate in writing. 

To the Fund: 

[Name of Fund] 
Two World Trade Center 
New York, New York 10048 

Attention: General Counsel 

To DWTFSB: 

Dean Witter Trust FSB 
Harborside Financial Center 
Plaza Two 
Jersey City, New Jersey 07311 

Attention: President 

Article 13 Merger of Agreement 

   13.1 This Agreement constitutes the entire agreement between the parties 
hereto and supersedes any prior agreement with respect to the subject matter 
hereof whether oral or written. 

Article 14 Personal Liability 

   14.1 In the case of a Fund organized as a Massachusetts business trust, a 
copy of the Declaration of Trust of the Fund is on file with the Secretary of 
The Commonwealth of Massachusetts, and notice is hereby given that this 
instrument is executed on behalf of the Board of Trustees of the Fund as 
Trustees and not individually and that the obligations of this instrument are 
not binding upon any of the Trustees or shareholders individually but are 
binding only upon the assets and property of the Fund; provided, however, 
that the Declaration of Trust of the Fund provides that the assets of a 
particular Series of the Fund shall under no circumstances be charged with 
liabilities attributable to any other Series of the Fund and that all persons 
extending credit to, or contracting with or having any claim against, a 
particular Series of the Fund shall look only to the assets of that 
particular Series for payment of such credit, contract or claim. 

   IN WITNESS WHEREOF, the parties hereto have caused this Amended and 
Restated Agreement to be executed in their names and on their behalf by and 
through their duly authorized officers, as of the day and year first above 
written. 

DEAN WITTER FUNDS 


   MONEY MARKET FUNDS 

 1. Dean Witter Liquid Asset Fund Inc. 
 2. Active Assets Money Trust 
 3. Dean Witter U.S. Government Money Market Trust 
 4. Active Assets Government Securities Trust 
 5. Dean Witter Tax-Free Daily Income Trust 
 6. Active Assets Tax-Free Trust 
 7. Dean Witter California Tax-Free Daily Income Trust 
 8. Dean Witter New York Municipal Money Market Trust 
 9. Active Assets California Tax-Free Trust 


   EQUITY FUNDS 

10. Dean Witter American Value Fund 
11. Dean Witter Mid-Cap Growth Fund 

                                       7
<PAGE>

12. Dean Witter Dividend Growth Securities Inc. 
13. Dean Witter Capital Growth Securities 
14. Dean Witter Global Dividend Growth Securities 
15. Dean Witter Income Builder Fund 
16. Dean Witter Natural Resource Development Securities Inc. 
17. Dean Witter Precious Metals and Minerals Trust 
18. Dean Witter Developing Growth Securities Trust 
19. Dean Witter Health Sciences Trust 
20. Dean Witter Capital Appreciation Fund 
21. Dean Witter Information Fund 
22. Dean Witter Value-Added Market Series 
23. Dean Witter World Wide Investment Trust 
24. Dean Witter European Growth Fund Inc. 
25. Dean Witter Pacific Growth Fund Inc. 
26. Dean Witter International SmallCap Fund 
27. Dean Witter Japan Fund 
28. Dean Witter Utilities Fund 
29. Dean Witter Global Utilities Fund 
30. Dean Witter Special Value Fund 
31. Dean Witter Financial Services Trust 
32. Dean Witter Market Leader Trust 
33. Dean Witter Managers' Select Fund 
34. Dean Witter Fund of Funds 
35. Dean Witter S&P 500 Index Fund 


   BALANCED FUNDS 

36. Dean Witter Balanced Growth Fund 
37. Dean Witter Balanced Income Trust 


   ASSET ALLOCATION FUNDS 

38. Dean Witter Strategist Fund 
39. Dean Witter Global Asset Allocation Fund 


   FIXED INCOME FUNDS 

40. Dean Witter High Yield Securities Inc. 
41. Dean Witter High Income Securities 
42. Dean Witter Convertible Securities Trust 
43. Dean Witter Intermediate Income Securities 
44. Dean Witter Short-Term Bond Fund 
45. Dean Witter World Wide Income Trust 
46. Dean Witter Global Short-Term Income Fund Inc. 
47. Dean Witter Diversified Income Trust 
48. Dean Witter U.S. Government Securities Trust 
49. Dean Witter Federal Securities Trust 
50. Dean Witter Short-Term U.S. Treasury Trust 
51. Dean Witter Intermediate Term U.S. Treasury Trust 
52. Dean Witter Tax-Exempt Securities Trust 
53. Dean Witter National Municipal Trust 
55. Dean Witter Limited Term Municipal Trust 
55. Dean Witter California Tax-Free Income Fund 
56. Dean Witter New York Tax-Free Income Fund 
57. Dean Witter Hawaii Municipal Trust 
58. Dean Witter Multi-State Municipal Series Trust 
59. Dean Witter Select Municipal Reinvestment Fund 

                                       8
<PAGE>

   SPECIAL PURPOSE FUNDS 

60. Dean Witter Retirement Series 
61. Dean Witter Variable Investment Series 
62. Dean Witter Select Dimensions Investment Series 


   TCW/DW FUNDS 

63. TCW/DW Core Equity Trust 
64. TCW/DW North American Government Income Trust 
65. TCW/DW Latin American Growth Fund 
66. TCW/DW Income and Growth Fund 
67. TCW/DW Small Cap Growth Fund 
68. TCW/DW Balanced Fund 
69. TCW/DW Total Return Trust 
70. TCW/DW Global Telecom Trust 
71. TCW/DW Strategic Income Trust 
72. TCW/DW Mid-Cap Equity Trust 

                                                By: 
                                                    -------------------------- 
                                                    Barry Fink 
                                                    Vice President and 
                                                    General Counsel 

ATTEST: 

- --------------------------------- 
Assistant Secretary 

                                                DEAN WITTER TRUST FSB 

                                                By: 
                                                    -------------------------- 
                                                    John Van Heuvelen 
                                                    President 

ATTEST: 
- ---------------------------------- 
Executive Vice President 

                                       9
<PAGE>

                                   EXHIBIT A

Dean Witter Trust FSB 
Harborside Financial Center 
Plaza Two 
Jersey City, NJ 07311 

Gentlemen: 

   The undersigned, (insert name of investment company) a (Massachusetts 
business trust/Maryland corporation) (the "Fund"), desires to employ and 
appoint Dean Witter Trust FSB ("DWTFSB") to act as transfer agent for each 
series and class of shares of the Fund, whether now or hereafter authorized 
or issued ("Shares"), dividend disbursing agent and shareholder servicing 
agent, registrar and agent in connection with any accumulation, open-account 
or similar plan provided to the holders of Shares, including without 
limitation any periodic investment plan or periodic withdrawal plan. 

   The Fund hereby agrees that, in consideration for the payment by the Fund 
to DWTFSB of fees as set out in the fee schedule attached hereto as Schedule 
A, DWTFSB shall provide such services to the Fund pursuant to the terms and 
conditions set forth in the Transfer Agency and Service Agreement annexed 
hereto, as if the Fund was a signatory thereto. 

   Please indicate DWTFSB's acceptance of employment and appointment by the 
Fund in the capacities set forth above by so indicating in the space provided 
below. 

                                          Very truly yours, 

                                          (name of fund) 

                                          By: 
                                              ------------------------------- 
                                              Barry Fink 
                                              Vice President and General 
                                              Counsel 

ACCEPTED AND AGREED TO: 


DEAN WITTER TRUST FSB 

By: 
    ---------------------------------- 
Its: 
      -------------------------------- 
Date: 
      -------------------------------- 

                                       10

<PAGE>

                                  SCHEDULE A

Fund:    Dean Witter S&P 500 Index Fund

Fees:    (1) Annual maintenance fee of $12.65 per shareholder account, payable
         monthly.

         (2) A fee equal to 1/12 of the fee set forth in (1) above, for
         providing Forms 1099 for accounts closed during the year, payable
         following the end of the calendar year.

         (3) Out-of-pocket expenses in accordance with Section 2.2 of the
         Agreement.

         (4) Fees for additional services not set forth in this Agreement
         shall be as negotiated between the parties.


                                       11


<PAGE>


CONSENT OF INDEPENDENT ACCOUNTANTS

We hereby consent to the use in the Statement of Additional Information
constituting part of this Post-Effective Amendment No. 1 to the registration
statement on Form N-1A (the "Registration Statement") of our report dated
July 30, 1997, relating to the statement of assets and liabilities of
Dean Witter S&P 500 Index Fund, which appears in such Statement of
Additional Information, and to the incorporation by reference of our
report into the Prospectus which constitutes part of this Registration
Statement. We also consent to the references to us under the headings
"Independent Accountants" and "Experts" in such Statement of Additional
Information.


/s/ Price Waterhouse LLP

PRICE WATERHOUSE LLP
1177 Avenue of the Americas
New York, New York 10036
March 30, 1998



















<PAGE>

              SCHEDULE FOR COMPUTATIONS OF PERFORMANCE QUOTATIONS
                                S&P 500 FUND (A)


(A) AVERAGE ANNUAL TOTAL RETURNS (I.E. STANDARDIZED COMPUTATIONS)
                         _                                   _
                        |        ______________________ |
FORMULA:                |       |          |
                        |  /\ n |         ERV         |
                   T  = |    \  |    -------------   |  - 1
                        |     \ |          P        |
                        |      \|          |
                        |_                _|

                     T = AVERAGE ANNUAL COMPOUND RETURN
                     n = NUMBER OF YEARS
                   ERV = ENDING REDEEMABLE VALUE
                     P = INITIAL INVESTMENT

                                                   (A)
  $1,000        ERV AS OF    NUMBER OF       AVERAGE ANNUAL       CUMULATIVE
INVESTED - P    28-Feb-98    YEARS - n    COMPOUND RETURN - T    TOTAL RETURN
- ------------    ---------    ---------    -------------------    ------------

 26-Sep-97      $1,056.20      0.42               N/A                5.62%

(B) AVERAGE ANNUAL RETURN WITHOUT DEDUCTION FOR APPLICABLE SALES CHARGE
    (NON STANDARD COMPUTATIONS)

(C) TOTAL RETURN WITHOUT DEDUCTION FOR APPLICABLE SALES CHARGE
    (NON STANDARD COMPUTATIONS)
                         _                                   _
                        |        ______________________ |
FORMULA:                |       |          |
                        |  /\ n |          EV         |
                   t  = |    \  |    -------------   |  - 1
                        |     \ |          P        |
                        |      \|          |
                        |_                _|

                            EV
                   TR = ----------  - 1
                            P

                    t = AVERAGE ANNUAL COMPOUND RETURN
                        (NO DEDUCTION FOR APPLICABLE SALES CHARGE)
                    n = NUMBER OF YEARS
                   EV = ENDING VALUE (NO DEDUCTION FOR APPLICABLE SALES CHARGE)
                    P = INITIAL INVESTMENT
                   TR = TOTAL RETURN (NO DEDUCTION FOR APPLICABLE SALES CHARGE)

                                 (C)                             (B)
  $1,000        EV AS OF        TOTAL       NUMBER OF       AVERAGE ANNUAL
INVESTED - P    28-Feb-98    RETURN - TR    YEARS - n    COMPOUND RETURN - t
- ------------    ---------    -----------    ---------    -------------------

 26-Sep-97      $1,114.70       11.47%        0.42               N/A

(D)       GROWTH OF $10,000*
(E)       GROWTH OF $50,000*
(F)       GROWTH OF $100,000*

FORMULA:  G = (TR+1)*P
          G = GROWTH OF INITIAL INVESTMENT
          P = INITIAL INVESTMENT
          TR = TOTAL RETURN SINCE INCEPTION

                             (D) GROWTH OF     (E) GROWTH OF     (F) GROWTH OF 
                 TOTAL           $10,000           $50,000          $100,000   
INVESTED - P   RETURN - TR   INVESTMENT - G    INVESTMENT - G    INVESTMENT - G
- ------------   -----------   --------------    --------------    --------------

 26-Sep-97        11.47         $10,562            $53,506          $108,126

* INITIAL INVESTMENT $9,475, $48,000 & 97,000 RESPECTIVELY REFLECTS A 5.25%, 4%
  & 3% SALES CHARGE

<PAGE>

              SCHEDULE FOR COMPUTATIONS OF PERFORMANCE QUOTATIONS
                                S&P 500 FUND (B)


(A) AVERAGE ANNUAL TOTAL RETURNS (I.E. STANDARDIZED COMPUTATIONS)
                         _                                   _
                        |        ______________________ |
FORMULA:                |       |          |
                        |  /\ n |         ERV         |
                   T  = |    \  |    -------------   |  - 1
                        |     \ |          P        |
                        |      \|          |
                        |_                _|

                     T = AVERAGE ANNUAL COMPOUND RETURN
                     n = NUMBER OF YEARS
                   ERV = ENDING REDEEMABLE VALUE
                     P = INITIAL INVESTMENT

                                                 (A)
  $1,000        ERV AS OF    NUMBER OF      AVERAGE ANNUAL        CUMULATIVE
INVESTED - P    28-Feb-98    YEARS - n    COMPOUND RETURN - T    TOTAL RETURN
- ------------    ---------    ---------    -------------------    ------------

 26-Sep-97      $1,060.90       0.42             N/A                 6.09%

(B) AVERAGE ANNUAL RETURN WITHOUT DEDUCTION FOR APPLICABLE SALES CHARGE
    (NON STANDARD COMPUTATIONS)

(C) TOTAL RETURN WITHOUT DEDUCTION FOR APPLICABLE SALES CHARGE
    (NON STANDARD COMPUTATIONS)
                         _                                   _
                        |        ______________________ |
FORMULA:                |       |          |
                        |  /\ n |          EV         |
                   t  = |    \  |    -------------   |  - 1
                        |     \ |          P        |
                        |      \|          |
                        |_                _|

                            EV
                   TR = ----------  - 1
                            P

                    t = AVERAGE ANNUAL COMPOUND RETURN
                        (NO DEDUCTION FOR APPLICABLE SALES CHARGE)
                    n = NUMBER OF YEARS
                   EV = ENDING VALUE (NO DEDUCTION FOR APPLICABLE SALES CHARGE)
                    P = INITIAL INVESTMENT
                   TR = TOTAL RETURN (NO DEDUCTION FOR APPLICABLE SALES CHARGE)

                                (C)                            (B)
  $1,000        EV AS OF       TOTAL       NUMBER OF      AVERAGE ANNUAL
INVESTED - P    28-Feb-98   RETURN - TR    YEARS - n    COMPOUND RETURN - t
- ------------    ---------   -----------    ---------    -------------------

 26-Sep-97      $1,110.90      11.09%        0.42               N/A

(D)       GROWTH OF $10,000
(E)       GROWTH OF $50,000
(F)       GROWTH OF $100,000

FORMULA:  G = (TR+1)*P
          G = GROWTH OF INITIAL INVESTMENT
          P = INITIAL INVESTMENT
          TR = TOTAL RETURN SINCE INCEPTION

                             (D) GROWTH OF     (E) GROWTH OF     (F) GROWTH OF 
                 TOTAL           $10,000           $50,000          $100,000   
INVESTED - P   RETURN - TR   INVESTMENT - G    INVESTMENT - G    INVESTMENT - G
- ------------   -----------   --------------    --------------    --------------

 26-Sep-97        11.09          $11,109           $55,545          $111,090

<PAGE>

              SCHEDULE FOR COMPUTATIONS OF PERFORMANCE QUOTATIONS
                                S&P 500 FUND (C)


(A) AVERAGE ANNUAL TOTAL RETURNS (I.E. STANDARDIZED COMPUTATIONS)
                         _                                   _
                        |        ______________________ |
FORMULA:                |       |          |
                        |  /\ n |         ERV         |
                   T  = |    \  |    -------------   |  - 1
                        |     \ |          P        |
                        |      \|          |
                        |_                _|

                     T = AVERAGE ANNUAL COMPOUND RETURN
                     n = NUMBER OF YEARS
                   ERV = ENDING REDEEMABLE VALUE
                     P = INITIAL INVESTMENT

                                                  (A)
  $1,000        ERV AS OF    NUMBER OF      AVERAGE ANNUAL        CUMULATIVE
INVESTED - P    28-Feb-98    YEARS - n    COMPOUND RETURN - T    TOTAL RETURN
- ------------    ---------    ---------    -------------------    ------------

 26-Sep-97      $1,100.80      0.42              N/A                10.08%

(B) AVERAGE ANNUAL RETURN WITHOUT DEDUCTION FOR APPLICABLE SALES CHARGE
    (NON STANDARD COMPUTATIONS)

(C) TOTAL RETURN WITHOUT DEDUCTION FOR APPLICABLE SALES CHARGE
    (NON STANDARD COMPUTATIONS)
                         _                                   _
                        |        ______________________ |
FORMULA:                |       |          |
                        |  /\ n |          EV         |
                   t  = |    \  |    -------------   |  - 1
                        |     \ |          P        |
                        |      \|          |
                        |_                _|

                            EV
                   TR = ----------  - 1
                            P

                    t = AVERAGE ANNUAL COMPOUND RETURN
                        (NO DEDUCTION FOR APPLICABLE SALES CHARGE)
                    n = NUMBER OF YEARS
                   EV = ENDING VALUE (NO DEDUCTION FOR APPLICABLE SALES CHARGE)
                    P = INITIAL INVESTMENT
                   TR = TOTAL RETURN (NO DEDUCTION FOR APPLICABLE SALES CHARGE)

                                 (C)                             (B)
  $1,000        EV AS OF        TOTAL       NUMBER OF       AVERAGE ANNUAL
INVESTED - P    28-Feb-98    RETURN - TR    YEARS - n    COMPOUND RETURN - t
- ------------    ---------    -----------    ---------    -------------------

 26-Sep-97      $1,110.80        11.08%        0.42              N/A

(D)       GROWTH OF $10,000
(E)       GROWTH OF $50,000
(F)       GROWTH OF $100,000

FORMULA:  G = (TR+1)*P
          G = GROWTH OF INITIAL INVESTMENT
          P = INITIAL INVESTMENT
          TR = TOTAL RETURN SINCE INCEPTION

                             (D) GROWTH OF     (E) GROWTH OF     (F) GROWTH OF 
                 TOTAL           $10,000           $50,000          $100,000   
INVESTED - P   RETURN - TR   INVESTMENT - G    INVESTMENT - G    INVESTMENT - G
- ------------   -----------   --------------    --------------    --------------

 26-Sep-97        11.08          $11,108           $55,540           $111,080

<PAGE>

              SCHEDULE FOR COMPUTATIONS OF PERFORMANCE QUOTATIONS
                                S&P 500 FUND (D)


(A) AVERAGE ANNUAL TOTAL RETURNS (NO LOAD FUND)

(B) TOTAL RETURN (NO LOAD FUND)

                         _                                   _
                        |        ______________________ |
FORMULA:                |       |          |
                        |  /\ n |          EV         |
                   t  = |    \  |    -------------   |  - 1
                        |     \ |          P        |
                        |      \|          |
                        |_                _|

                            EV
                   TR = ----------  - 1
                            P

                    t = AVERAGE ANNUAL COMPOUND RETURN
                    n = NUMBER OF YEARS
                   EV = ENDING VALUE
                    P = INITIAL INVESTMENT
                   TR = TOTAL RETURN

                                 (B)                             (A)
  $1,000        EV AS OF        TOTAL       NUMBER OF       AVERAGE ANNUAL
INVESTED - P    28-Feb-98    RETURN - TR    YEARS - n    COMPOUND RETURN - t
- ------------    ---------    -----------    ---------    -------------------

 26-Sep-97      $1,115.30      11.53%          0.42              NA

(C)       GROWTH OF $10,000
(D)       GROWTH OF $50,000
(E)       GROWTH OF $100,000

FORMULA:  G = (TR+1)*P
          G = GROWTH OF INITIAL INVESTMENT
          P = INITIAL INVESTMENT
          TR = TOTAL RETURN SINCE INCEPTION

                             (C) GROWTH OF     (D) GROWTH OF     (E) GROWTH OF 
                 TOTAL           $10,000           $50,000          $100,000   
INVESTED - P   RETURN - TR   INVESTMENT - G    INVESTMENT - G    INVESTMENT - G
- ------------   -----------   --------------    --------------    --------------

 26-Sep-97        11.53          $11,153          $55,765            $111,530



<TABLE> <S> <C>

<PAGE>

<ARTICLE> 6
<SERIES>
  <NAME>        S&P 500 INDEX FUND CLASS A
  <NUMBER>      1
       
<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          AUG-31-1998
<PERIOD-END>                               FEB-28-1998
<INVESTMENTS-AT-COST>                      393,056,007
<INVESTMENTS-AT-VALUE>                     431,020,945
<RECEIVABLES>                                6,268,238
<ASSETS-OTHER>                                  46,251
<OTHER-ITEMS-ASSETS>                            25,567
<TOTAL-ASSETS>                             437,361,001
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                    1,432,021
<TOTAL-LIABILITIES>                          1,432,021
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                   397,807,150
<SHARES-COMMON-STOCK>                        1,716,869
<SHARES-COMMON-PRIOR>                                0
<ACCUMULATED-NII-CURRENT>                      219,833
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                      (201,209)
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                    38,103,206
<NET-ASSETS>                                19,088,917
<DIVIDEND-INCOME>                            1,975,191
<INTEREST-INCOME>                              398,787
<OTHER-INCOME>                                       0
<EXPENSES-NET>                               1,854,124
<NET-INVESTMENT-INCOME>                        519,854
<REALIZED-GAINS-CURRENT>                     (201,209)
<APPREC-INCREASE-CURRENT>                   38,103,206
<NET-CHANGE-FROM-OPS>                       38,421,851
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                     (32,194)
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                      2,174,952
<NUMBER-OF-SHARES-REDEEMED>                  (463,575)
<SHARES-REINVESTED>                              2,992
<NET-CHANGE-IN-ASSETS>                     435,828,980
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                            0
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                          510,357
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                              2,066,376
<AVERAGE-NET-ASSETS>                        12,365,913
<PER-SHARE-NAV-BEGIN>                            10.00
<PER-SHARE-NII>                                    .05
<PER-SHARE-GAIN-APPREC>                           1.10
<PER-SHARE-DIVIDEND>                             (.03)
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              11.12
<EXPENSE-RATIO>                                    .74
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        


</TABLE>

<TABLE> <S> <C>

<PAGE>

<ARTICLE> 6
<SERIES>
  <NAME>        S&P 500 INDEX FUND CLASS B
  <NUMBER>      2
       
<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          AUG-31-1998
<PERIOD-END>                               FEB-28-1998
<INVESTMENTS-AT-COST>                      393,056,007
<INVESTMENTS-AT-VALUE>                     431,020,945
<RECEIVABLES>                                6,268,238
<ASSETS-OTHER>                                  46,251
<OTHER-ITEMS-ASSETS>                            25,567
<TOTAL-ASSETS>                             437,361,001
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                    1,432,021
<TOTAL-LIABILITIES>                          1,432,021
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                   397,807,150
<SHARES-COMMON-STOCK>                       34,233,805
<SHARES-COMMON-PRIOR>                                0
<ACCUMULATED-NII-CURRENT>                      219,833
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                      (201,209)
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                    38,103,206
<NET-ASSETS>                               380,009,145
<DIVIDEND-INCOME>                            1,975,191
<INTEREST-INCOME>                              398,787
<OTHER-INCOME>                                       0
<EXPENSES-NET>                               1,854,124
<NET-INVESTMENT-INCOME>                        519,854
<REALIZED-GAINS-CURRENT>                     (201,209)
<APPREC-INCREASE-CURRENT>                   38,103,206
<NET-CHANGE-FROM-OPS>                       38,421,851
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                    (218,935)
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                     35,877,610
<NUMBER-OF-SHARES-REDEEMED>                (1,665,955)
<SHARES-REINVESTED>                             19,650
<NET-CHANGE-IN-ASSETS>                     435,828,980
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                            0
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                          510,357
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                              2,066,376
<AVERAGE-NET-ASSETS>                       263,834,128
<PER-SHARE-NAV-BEGIN>                            10.00
<PER-SHARE-NII>                                    .02
<PER-SHARE-GAIN-APPREC>                           1.09
<PER-SHARE-DIVIDEND>                             (.01)
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              11.10
<EXPENSE-RATIO>                                   1.50
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        


</TABLE>

<TABLE> <S> <C>

<PAGE>

<ARTICLE> 6
<SERIES>
  <NAME>        S&P 500 INDEX FUND CLASS C
  <NUMBER>      3
       
<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          AUG-31-1998
<PERIOD-END>                               FEB-28-1998
<INVESTMENTS-AT-COST>                      393,056,007
<INVESTMENTS-AT-VALUE>                     431,020,945
<RECEIVABLES>                                6,268,238
<ASSETS-OTHER>                                  46,251
<OTHER-ITEMS-ASSETS>                            25,567
<TOTAL-ASSETS>                             437,361,001
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                    1,432,021
<TOTAL-LIABILITIES>                          1,432,021
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                   397,807,150
<SHARES-COMMON-STOCK>                        2,173,252
<SHARES-COMMON-PRIOR>                                0
<ACCUMULATED-NII-CURRENT>                      219,833
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                      (201,209)
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                    38,103,206
<NET-ASSETS>                                24,126,224
<DIVIDEND-INCOME>                            1,975,191
<INTEREST-INCOME>                              398,787
<OTHER-INCOME>                                       0
<EXPENSES-NET>                               1,854,124
<NET-INVESTMENT-INCOME>                        519,854
<REALIZED-GAINS-CURRENT>                     (201,209)
<APPREC-INCREASE-CURRENT>                   38,103,206
<NET-CHANGE-FROM-OPS>                       38,421,851
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                     (12,314)
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                      2,361,111
<NUMBER-OF-SHARES-REDEEMED>                  (191,494)
<SHARES-REINVESTED>                              1,135
<NET-CHANGE-IN-ASSETS>                     435,828,980
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                            0
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                          510,357
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                              2,066,376
<AVERAGE-NET-ASSETS>                        17,713,952
<PER-SHARE-NAV-BEGIN>                            10.00
<PER-SHARE-NII>                                    .02
<PER-SHARE-GAIN-APPREC>                           1.09
<PER-SHARE-DIVIDEND>                             (.01)
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              11.10
<EXPENSE-RATIO>                                   1.50
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        


</TABLE>

<TABLE> <S> <C>

<PAGE>

<ARTICLE> 6
<SERIES>
  <NAME>        S&P 500 INDEX FUND CLASS D
  <NUMBER>      4
       
<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          AUG-31-1998
<PERIOD-END>                               FEB-28-1998
<INVESTMENTS-AT-COST>                      393,056,007
<INVESTMENTS-AT-VALUE>                     431,020,945
<RECEIVABLES>                                6,268,238
<ASSETS-OTHER>                                  46,251
<OTHER-ITEMS-ASSETS>                            25,567
<TOTAL-ASSETS>                             437,361,001
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                    1,432,021
<TOTAL-LIABILITIES>                          1,432,021
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                   397,807,150
<SHARES-COMMON-STOCK>                        1,142,033
<SHARES-COMMON-PRIOR>                                0
<ACCUMULATED-NII-CURRENT>                      219,833
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                      (201,209)
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                    38,103,206
<NET-ASSETS>                                12,704,694
<DIVIDEND-INCOME>                            1,975,191
<INTEREST-INCOME>                              398,787
<OTHER-INCOME>                                       0
<EXPENSES-NET>                               1,854,124
<NET-INVESTMENT-INCOME>                        519,854
<REALIZED-GAINS-CURRENT>                     (201,209)
<APPREC-INCREASE-CURRENT>                   38,103,206
<NET-CHANGE-FROM-OPS>                       38,421,851
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                     (36,578)
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                      2,170,273
<NUMBER-OF-SHARES-REDEEMED>                (1,030,929)
<SHARES-REINVESTED>                               189
<NET-CHANGE-IN-ASSETS>                     435,828,980
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                            0
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                          510,357
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                              2,066,376
<AVERAGE-NET-ASSETS>                         4,612,306
<PER-SHARE-NAV-BEGIN>                            10.00
<PER-SHARE-NII>                                    .06
<PER-SHARE-GAIN-APPREC>                           1.09
<PER-SHARE-DIVIDEND>                             (.03)
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              11.12
<EXPENSE-RATIO>                                    .50
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        


</TABLE>

<PAGE>

                               POWER OF ATTORNEY

   KNOW ALL MEN BY THESE PRESENTS, that WAYNE E. HEDIEN, whose signature 
appears below, constitutes and appoints David M. Butowsky, Ronald Feiman and 
Stuart Strauss, or any of them, his true and lawful attorneys-in-fact and 
agents, with full power of substitution among himself and each of the persons 
appointed herein, for him and in his name, place and stead, in any and all 
capacities, to sign any amendments to any registration statement of ANY OF 
THE DEAN WITTER FUNDS SET FORTH ON SCHEDULE A ATTACHED HERETO, and to file 
the same, with all exhibits thereto, and other documents in connection 
therewith, with the Securities and Exchange Commission, as fully to all 
intents and purposes as he might or could do in person, hereby ratifying and 
confirming all that said attorneys-in-fact and agents, or any of them, may 
lawfully do or cause to be done by virtue hereof. 

Dated: September 1, 1997 
                                          /s/ Wayne E. Hedien 
                                          ----------------------------------- 
                                              Wayne E. Hedien 
<PAGE>
                                  SCHEDULE A 

 1. Active Assets Money Trust 
 2. Active Assets Tax-Free Trust 
 3. Active Assets Government Securities Trust 
 4. Active Assets California Tax-Free Trust 
 5. Dean Witter New York Municipal Money Market Trust 
 6. Dean Witter American Value Fund 
 7. Dean Witter Tax-Exempt Securities Trust 
 8. Dean Witter Tax-Free Daily Income Trust 
 9. Dean Witter Capital Growth Securities 
10. Dean Witter U.S. Government Money Market Trust 
11. Dean Witter Precious Metals and Minerals Trust 
12. Dean Witter Developing Growth Securities Trust 
13. Dean Witter World Wide Investment Trust 
14. Dean Witter Value-Added Market Series 
15. Dean Witter Utilities Fund 
16. Dean Witter Strategist Fund 
17. Dean Witter California Tax-Free Daily Income Trust 
18. Dean Witter Convertible Securities Trust 
19. Dean Witter Intermediate Income Securities 
20. Dean Witter World Wide Income Trust 
21. Dean Witter S&P 500 Index Fund 
22. Dean Witter U.S. Government Securities Trust 
23. Dean Witter Federal Securities Trust 
24. Dean Witter Multi-State Municipal Series Trust 
25. Dean Witter California Tax-Free Income Fund 
26. Dean Witter New York Tax-Free Income Fund 
27. Dean Witter Select Municipal Reinvestment Fund 
28. Dean Witter Variable Investment Series 
29. High Income Advantage Trust 
30. High Income Advantage Trust II 
31. High Income Advantage Trust III 
32. InterCapital Insured Municipal Bond Trust 
33. InterCapital Insured Municipal Trust 
34. InterCapital Insured Municipal Income Trust 
35. InterCapital Quality Municipal Investment Trust 
36. InterCapital Quality Municipal Income Trust 
37. Dean Witter Government Income Trust 
38. Municipal Income Trust 
39. Municipal Income Trust II 
40. Municipal Income Trust III 
41. Municipal Income Opportunities Trust 
42. Municipal Income Opportunities Trust II 
43. Municipal Income Opportunities Trust III 
44. Municipal Premium Income Trust 
45. Prime Income Trust 
46. Dean Witter Short-Term U.S. Treasury Trust 
47. Dean Witter Diversified Income Trust 
48. InterCapital California Insured Municipal Income Trust 
49. Dean Witter Health Sciences Trust 
50. Dean Witter Global Dividend Growth Securities 
51. InterCapital Quality Municipal Securities 
52. InterCapital California Quality Municipal Securities 
53. InterCapital New York Quality Municipal Securities 
54. Dean Witter Retirement Series 
55. Dean Witter Limited Term Municipal Trust 
56. Dean Witter Short-Term Bond Fund 
57. Dean Witter Global Utilities Fund 
58. InterCapital Insured Municipal Securities 
59. InterCapital Insured California Municipal Securities 
60. Dean Witter High Income Securities 
61. Dean Witter National Municipal Trust 
62. Dean Witter International SmallCap Fund 
63. Dean Witter Mid-Cap Growth Fund 
64. Dean Witter Select Dimensions Investment Series 
65. Dean Witter Global Asset Allocation Fund 
66. Dean Witter Balanced Growth Fund 
67. Dean Witter Balanced Income Fund 
68. Dean Witter Intermediate Term U.S. Treasury Trust 
69. Dean Witter Hawaii Municipal Trust 
70. Dean Witter Japan Fund 
71. Dean Witter Capital Appreciation Fund 
72. Dean Witter Information Fund 
73. Dean Witter Fund of Funds 
74. Dean Witter Special Value Fund 
75. Dean Witter Income Builder Fund 
76. Dean Witter Financial Services Trust 
77. Dean Witter Market Leader Trust 
78. Dean Witter Managers' Select Fund 
79. Dean Witter Liquid Asset Fund Inc. 
80. Dean Witter Natural Resource Development Securities Inc. 
81. Dean Witter Dividend Growth Securities Inc. 
82. Dean Witter European Growth Fund Inc. 
83. Dean Witter Pacific Growth Fund Inc. 
84. Dean Witter High Yield Securities Inc. 
85. Dean Witter Global Short-Term Income Fund Inc. 
86. InterCapital Income Securities Inc. 



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