MORGAN STANLEY DEAN WITTER S&P 500 SELECT FUND
497, 1998-08-14
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                                               Filed Pursuant to Rule 497(e)
                                               Registration File No.: 333-56609



                         PROSPECTUS
                         JULY 30, 1998

                         Morgan Stanley Dean Witter S&P 500 Select Fund (the
"Fund") is an open-end, diversified management investment company whose
investment objective is to provide a total return (before expenses) that
exceeds the total return 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 of selected companies (including
ADRs of foreign companies) included in the S&P 500 Index, utilizing equity
research provided by selected equity research firms. There can be no assurance
that the Fund's objective will be achieved. (See "Investment Objective and
Policies.") The Fund will not operate as an index fund and it is not
anticipated that the Fund will invest in all of the companies or industries
represented in the S&P 500 Index.

                         INITIAL OFFERING--Shares of the Fund are being offered
in an underwriting by Morgan Stanley Dean Witter Distributors Inc. at $10.00
per share for Class B, Class C and Class D shares with all proceeds going to
the Fund and at $10.00 per share plus a sales charge for Class A shares with
the sales charge paid to the Underwriter and the net asset value of $10.00 per
share going to the Fund. The initial offering will run from approximately
August 25, 1998 through September 23, 1998.

                         CONTINUOUS OFFERING--A continuous offering of the
shares of the Fund will commence approximately two weeks after the closing date
of the initial offering which is anticipated for September 28, 1998. Class B,
Class C and Class D shares will be priced at the net asset value per share and
Class A shares will be priced at the net asset value per share plus a sales
charge, in each case as next determined following receipt of an order.

                         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 July 30, 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.


                         Morgan Stanley Dean Witter
                          S&P 500 Select 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/ 5

The Fund and Its Management/ 7

Investment Objective and Policies / 7

 Risk Considerations and
       Investment Practices/ 9

Investment Restrictions / 13

Underwriting/ 13

Purchase of Fund Shares--
       Continuous Offering/ 14

Shareholder Services/ 24

Redemptions and Repurchases/ 27

Dividends, Distributions and Taxes/ 28

Performance Information/ 29

Additional Information / 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.



<PAGE>
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.




                                   MORGAN STANLEY DEAN WITTER DISTRIBUTORS INC.,
                                   DISTRIBUTOR
<PAGE>
<TABLE>
<CAPTION>
 


PROSPECTUS SUMMARY
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<S>          <C>
The            The Fund is organized as a trust, commonly known as a Massachusetts business trust, and is an open-end, diversified
Fund           management investment company. The Fund invests primarily in common stocks of selected companies (including ADRs of
               foreign companies) included in the Standard & Poor's (Registered Trademark) 500 Composite Stock Price Index (the
               "S&P 500 Index"), utilizing equity research provided by selected equity research firms. The Fund will not operate
               as an index fund and it is not anticipated that the Fund will invest in all of the companies or industries
               represented in the S&P 500 Index.
- -----------------------------------------------------------------------------------------------------------------------------------
Shares         Shares of beneficial interest with $0.01 par value (see page 30). The Fund offers four Classes of shares, each with
Offered        a different combination of sales charges, ongoing fees and other features (see pages 14-22).
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Initial        Shares of the Fund are being offered in an underwriting by Morgan Stanley Dean Witter Distributors Inc. at $10.00
Offering       per share for each of Class B, Class C and Class D and $10.00 per share plus a sales charge for Class A. The
               minimum purchase for each Class is 100 shares; however, Class D shares are only available to persons who are
               otherwise qualified to purchase such shares. The initial offering will run approximately from August 25, 1998
               through September 23, 1998. The closing will take place on September 28, 1998 or such other date as may be agreed
               upon by Morgan Stanley Dean Witter Distributors Inc., and the Fund (the "Closing Date"). Shares will not be issued
               and dividends will not be declared by the Fund until after the Closing Date. If any orders received during the
               initial offering period are accompanied by payment, such payment will be returned unless an accompanying request
               for investment in a Morgan Stanley Dean Witter money market fund is received at the time the payment is made. Any
               purchase order may be cancelled at any time prior to the Closing Date.
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Continuous     A continuous offering of shares of the Fund will commence within approximately two weeks after the Closing Date.
Offering/      The minimum initial investment for each Class is $1,000 ($100 if the account is opened through EasyInvestSM). Class
Minimum        D shares are only available to persons investing $5 million ($25 million for certain qualified plans) or more and
Purchase       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 Morgan Stanley Dean Witter
               Advisors Inc. serves as investment manager ("Morgan Stanley Dean Witter Funds") that are sold with a front-end
               sales charge, and concurrent investments in Class D shares of the Fund and other Morgan Stanley Dean Witter Funds
               that are multiple class funds, will be aggregated. The minimum subsequent investment is $100 (see page 14).
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Investment     The investment objective of the Fund is to provide a total return (before expenses) that exceeds the total return
Objective      of the S&P 500 Index (see page 7).
- -----------------------------------------------------------------------------------------------------------------------------------
Investment     Morgan Stanley Dean Witter Advisors Inc. ("MSDW Advisors"), the Investment Manager of the Fund, and its
Manager        wholly-owned subsidiary, Morgan Stanley 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 $115.2 billion at June 30, 1998 (see page 7).
- -----------------------------------------------------------------------------------------------------------------------------------

                                       2
<PAGE>


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Management     The Investment Manager receives a monthly fee at the annual rate of 0.60% of the Fund's average daily net assets.
Fee            The Investment Manager has agreed to assume all operating expenses (not including brokerage and 12b-1 fees) and to
               waive the compensation provided for in its Management Agreement until such time as the Fund has $50 million in net
               assets or until six months from the date of the Fund's commencement of operations, whichever occurs first. The fee
               should not be compared with fees paid by other investment companies without also considering applicable sales loads
               and distribution fees, including those noted below (see page 7).
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Underwriter    Morgan Stanley Dean Witter Distributors Inc. (the "Distributor") is the Fund's Underwriter and Distributor. The
and            Fund has adopted a distribution plan pursuant to Rule 12b-1 under the Investment Company Act (the "12b-1 Plan")
Distributor    with respect to the distribution fees paid by the Class A, Class B and Class C shares of the Fund to the
and            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
Distribution   Class C equal to 0.25% of the average daily net assets of the Class are currently each characterized as a service
Fee            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 14 and 22).
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Alternative    Four classes of shares are offered:
Purchase       o Class A shares are offered with a front-end sales charge, starting at 5.25% and reduced for larger purchases.
Arrangements   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 14, 17 and 22).

               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 14, 19 and 22).

               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 14 and 22).
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                                       3


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               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 14 and 22).
- -----------------------------------------------------------------------------------------------------------------------------------
Dividends and  Dividends from net investment income and distributions from net capital gains, if any, are paid at least once each
Capital        year. The Fund may, however, determine to retain all or part of any net long-term capital gains in any year for
Gains          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 24
               and 28).
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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 EasyInvestSM, if after twelve months the shareholder has invested less than $1,000 in
               the account (see page 27).
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Risk           An investment in the Fund should be considered a long-term holding and subject to all the risks associated with
Considerations 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 is actively managed by the Investment Manager and will not operate as an index fund.
               In selecting individual companies, the Investment Manager will utilize the research recommendations of equity
               research firms and there can be no assurances that these companies will perform as anticipated by the equity
               research firms or by the Investment Manager. 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" (pages 9-12) 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.

                                       4
<PAGE>

SUMMARY OF FUND EXPENSES
- --------------------------------------------------------------------------------

The following table illustrates all expenses and fees that a shareholder of the
Fund will incur. The fees and expenses set forth in the table below are based
on the fees and estimated other expenses anticipated for the first fiscal year
of the Fund.

<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+ .......................................       0.60%         0.60%            0.60%             0.60%
12b-1 Fees (5) (6) .....................................       0.25%         1.00%            1.00%             None
Other Expenses+ ........................................       0.32%         0.32%            0.32%             0.32%
Total Fund Operating Expenses+ (7) .....................       1.17%         1.92%            1.92%             0.92%

</TABLE>

- ----------
+     The Investment Manager has agreed to assume all operating expenses
      (except for brokerage and 12b-1 fees) and to waive the compensation
      provided for in its Investment Management Agreement 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. The
      expenses and fees disclosed above do not reflect the assumption of any
      expenses or the waiver of any compensation by the Investment Manager.
(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").
(7)   "Total Fund Operating Expenses," as shown above with respect to each
      Class, are based upon the sum of Management and 12b-1 Fees, and estimated
      "Other Expenses."


                                       5
<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 ....................................................................      $64        $88
  Class B ....................................................................      $69        $90
  Class C ....................................................................      $29        $60
  Class D ....................................................................      $ 9        $29
You would pay the following expenses on the same $1,000 investment assuming no
redemption at the end of the period:
  Class A ....................................................................      $64        $88
  Class B ....................................................................      $19        $60
  Class C ....................................................................      $19        $60
  Class D ....................................................................      $ 9        $29
</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.


                                       6
<PAGE>

THE FUND AND ITS MANAGEMENT
- --------------------------------------------------------------------------------

       Morgan Stanley Dean Witter S&P 500 Select 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 8, 1998.

       Morgan Stanley Dean Witter Advisors Inc. ("MSDW Advisors" 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 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. The Investment Manager, which was incorporated in July, 1992 under
the name Dean Witter InterCapital Inc., changed its name to Morgan Stanley Dean
Witter Advisors Inc. on June 22, 1998.

       MSDW Advisors and its wholly-owned subsidiary, Morgan Stanley Dean
Witter Services Company Inc. ("MSDW Services"), 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 $110.8 billion at June 30, 1998. The
Investment Manager also manages portfolios of pension plans, other institutions
and individuals which aggregated approximately $4.4 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. MSDW Advisors has retained MSDW Services 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 0.60% to the Fund's net assets. The Investment Manager has
agreed to assume all operating expenses (except for brokerage and 12b-1 fees)
and to waive the compensation provided for in its Investment Management
Agreement until such time as the Fund has $50 million in net assets or until
six months from the date of the Fund's commencement of operations, whichever
occurs first. The expenses of the Fund include: the fee of the Investment
Manager; the fee pursuant to the Plan of Distribution (see "Purchase of Fund
Shares"); taxes; transfer agent, custodian and 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 a total return
(before expenses) that exceeds the total return 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 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.


                                       7
<PAGE>

       The Fund seeks to achieve its objective by investing, under normal
circumstances, at least 80% of its net assets in common stocks of selected
companies (including ADRs of foreign companies) included in the S&P 500 Index,
utilizing equity research provided by selected equity research firms. The Fund
will be actively managed and it is not anticipated that the Fund will invest in
all of the companies or industries represented in the S&P 500 Index. As such,
the Fund will not operate as an index fund and its performance will differ from
the performance of the S&P 500 Index.

       The Investment Manager first seeks to identify those companies listed on
the S&P 500 Index that have received favorable investment recommendations from
the equity research departments of recognized investment banking firms,
including Morgan Stanley Dean Witter & Co. The Investment Manager will review
and assess the available analytical research reports and investment
recommendations provided by these equity research departments on each of the
companies included in the S&P 500 Index, together with its own investment
analysis, to select favorable companies within each of the industries
represented in the S&P 500 Index relative to the other companies in that
industry classification. It is not anticipated that the Fund will invest in the
selected companies in accordance with their individual market capitalization
weightings in the S&P 500 Index. The Investment Manager will attempt to invest
in all of the industries represented in the S&P 500 Index; however, the
Investment Manager will not invest in an industry if the companies within that
industry do not meet its investment criteria. The Investment Manager generally
will allocate the Fund's assets among each selected industry classification
based on the total market capitalization of the companies in that industry
relative to the total market capitalization of the companies in the other
industries invested in by the Fund.

       The holdings of the Fund will be adjusted by the Investment Manager on
an ongoing basis, but not less than quarterly to reflect changes in investment
recommendation, the Investment Manager's own analysis, industry market
capitalization and the Fund's asset levels.

       In addition to common stocks of companies (including ADRs of foreign
companies) included in the S&P 500 Index, up to 20% of the Fund's net assets
may be invested in stock index futures on the S&P 500 Index, Standard & Poor's
Depositary Receipts, and/or money market instruments as described below.

       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
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 net assets. While such
instruments can be used as leveraged investments, the Fund may not use them to
leverage its assets.

       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 may invest up to 10% of its total assets in the aggregate
in SPDRs and up to 5% of its total assets in SPDRs issued by a single unit
investment trust. As a holder


                                       8
<PAGE>

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 would be
absorbing duplicate levels of fees with respect to investments in such unit
investment trusts. The liquidity of small holdings of SPDRs will depend upon
the existence and liquidity of a secondary market. See the Statement of
Additional Information for a further discussion of SPDRs.

       Temporary Investments. A portion of the Fund's assets, not exceeding 20%
of its net 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 purpose of meeting
anticipated redemptions. The money market instruments in which the Fund may
invest are certificates of deposit 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.

       There may be periods during which, in the opinion of the Investment
Manager, market conditions warrant reduction of some or all of the Fund's
securities holdings. During such periods, the Fund may adopt a temporary
"defensive" posture in which up to 100% of its total assets is invested in
money market instruments or cash.

       Additional Information Concerning the S&P 500 Index. The S&P 500 Index
is a well-known, unmanaged 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 of domestic and foreign
companies whose securities are 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.
Unlike the Fund, however, the performance of the S&P 500 Index does not include
expenses or fees. 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. The S&P 500 Index is
currently comprised of approximately 104 industry classifications.

       "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 purchase securities on a when-issued, delayed delivery or
forward commitment basis, may purchase securities on a "when, as and if issued
basis, and may lend its portfolio securities, as discussed under "Risk
Considerations and Investment Practices" below.

       The investment policies of the Fund are not fundamental and may be
changed by the Trustees without shareholder approval.


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


                                       9
<PAGE>

due to a variety of economic, market or political factors which cannot be
predicted.

       Investment Selection. A principal component of the Investment Manager's
selection process is the investment recommendations of the equity research
firms chosen by the Investment Manager, including Morgan Stanley Dean Witter &
Co. The equity research firms utilized by the Investment Manager will be
selected based on its opinion of the quality of the research services and stock
recommendations of such firms. This list of selected equity research firms will
be continuously reviewed by the Investment Manager and may change from time to
time. There can be no assurance that all of the companies included in the S&P
500 Index will be covered by each of the selected equity research firms or that
the research recommendations will be consistent among those firms. In addition,
there can be no assurance that the securities will perform as anticipated by
these equity research firms or by the Investment Manager.

       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.

       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.

       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.


                                       10
<PAGE>

       When-Issued and Delayed Delivery Securities and Forward
Commitments. From time to time, in the ordinary course of business, the Fund
may purchase securities on a when-issued or delayed delivery basis or may
purchase or sell securities on a forward commitment basis. When such
transactions are negotiated, the price is fixed at the time of the commitment,
but delivery and payment can take place a month or more after the date of the
commitment. An increase in percentage of the Fund's assets committed to the
purchase of securities on a when-issued, delayed delivery or forward commitment
basis may increase the volatility of its net asset value. See the Statement of
Additional Information for additional risk disclosure.

       When, As and If Issued Securities. The Fund may purchase securities on a
"when, as and if issued" basis under which the issuance of the security depends
upon the occurrence of a subsequent event, such as approval of a merger,
corporate reorganization, leveraged buyout or debt restructuring. If the
anticipated event does not occur and the securities are not issued, the Fund
will have lost an investment opportunity. An increase in the percentage of the
Fund's asset committed to the purchase of securities on a "when, as and if
issued" basis may increase the volatility of its net asset value. See the
Statement of Additional Information for additional risk disclosure.

       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
fluctuationsduring 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 Man-


                                       11
<PAGE>

ager 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. In determining which securities to
purchase for the Fund or hold in the Fund's portfolio, the Investment Manager
will rely on information from various sources, including research, analysis and
appraisals of brokers and dealers, including Dean Witter Reynolds Inc., Morgan
Stanley & Co. Incorporated and other broker-dealers that are affiliates of the
Investment Manager, and the Investment Manager's own analysis of factors it
deems relevant. No particular emphasis is given to investments in securities
for the purpose of earning current income. The assets of the Fund are managed
within MSDW Advisors' Growth Group, which manages 29 equity funds and fund
portfolios with approximately $12.7 billion in assets as of June 30, 1998. Guy
G. Rutherfurd, Jr., Senior Vice President of MSDW Advisors and a member of MSDW
Advisors' Growth Group since February, 1997, is the primary portfolio manager
of the Fund. Prior to joining MSDW Advisors, Mr. Rutherfurd was Executive Vice
President and Chief Investment Officer of Nomura Asset Management (U.S.A.)
Inc., from May, 1992 to February, 1997.

       Although the Fund does not intend to engage in short-term trading of
portfolio securities as a means of achieving its investment objective, it may
sell portfolio securities without regard to the length of time they have been
held whenever such sale will in the Investment Manager's opinion strengthen the
Fund's position and contribute to its investment objective. 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.,
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 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. 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.


                                       12
<PAGE>

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.

UNDERWRITING
- --------------------------------------------------------------------------------

       Morgan Stanley Dean Witter Distributors Inc. (the "Underwriter") has
agreed to purchase up to 10,000,000 shares from the Fund, which number may be
increased or decreased in accordance with the Underwriting Agreement. The
initial offering will run approximately from August 25, 1998 through September
23, 1998. The Underwriting Agreement provides that the obligation of the
Underwriter is subject to certain conditions precedent and that the Underwriter
will be obligated to purchase the shares on September 28, 1998, or such other
date as may be agreed upon by the Underwriter and the Fund (the "Closing
Date"). Shares will not be issued and dividends will not be declared by the
Fund until after the Closing Date. For this reason, payment is not required to
be made prior to the Closing Date. If any orders received during the initial
offering period are accompanied by payment, such payment will be returned
unless an accompanying request for investment in a Morgan Stanley Dean Witter
money market fund is received at the time the payment is made. Prospective
investors in money market funds should request and read the money market fund
prospectus prior to investing. All such funds received and invested in a Morgan
Stanley Dean Witter money market fund will be automatically invested in the
Portfolio on the Closing Date without any further action by the investor. Any
investor may cancel his or her purchase of Portfolio shares without penalty at
any time prior to the Closing Date.

       The Underwriter will purchase Class B, Class C and Class D shares from
the Fund at $10.00 per share with all proceeds going to the Fund and will
purchase Class A shares at $10.00 per share plus a sales charge with the sales
charge paid to the Underwriter and the net asset value of $10.00 per share
going to the Fund. The Underwriter may, however, receive contingent deferred
sales charges from future redemptions of Class A, Class B and Class C shares
(see "Purchase of Fund Shares--Continuous Offering").

       The Underwriter shall, regardless of its expected underwriting
commitment, be entitled and


                                       13
<PAGE>

obligated to purchase only the number of shares for which purchase orders have
been received by the Underwriter prior to 2:00 p.m., New York time, on the
third business day preceding the Closing Date, or such other date as may be
agreed to between the parties.

       The minimum number of Fund shares which may be purchased by any
shareholder pursuant to this offering is 100 shares. Certificates for shares
purchased will not be issued unless requested by the shareholder in writing.

PURCHASE OF FUND SHARES--CONTINUOUS OFFERING
- --------------------------------------------------------------------------------

GENERAL

       Morgan Stanley Dean Witter Distributors Inc. ("MSDW Distributors" or 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
purchase. 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 Morgan Stanley Dean Witter
Funds that are multiple class funds ("Morgan Stanley Dean Witter Multi-Class
Funds") and shares of Morgan Stanley Dean Witter Funds sold with a front-end
sales charge ("FSC Funds") and concurrent investments in Class D shares of the
Fund and other Morgan Stanley Dean Witter Multi-Class Funds will be aggregated.
Subsequent purchases of $100 or more may be made by sending a check, payable to
Morgan Stanley Dean Witter S&P 500 Select 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 a Morgan Stanley Dean Witter Financial
Advisor or other Selected Broker-Dealer representative. When purchasing shares
of the Fund, investors must specify whether the purchase is for Class A, Class


                                       14
<PAGE>

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 EasyInvestSM, 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 MSDW
Advisors 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 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


                                       15
<PAGE>

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 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


                                       16
<PAGE>

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 Morgan
Stanley Dean Witter Multi-Class Funds, shares of FSC Funds and shares of Morgan
Stanley 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> 
    A     Maximum 5.25%              0.25%         No
          initial sales charge
          reduced for
          purchases of
          $25,000 and over;
          shares sold 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 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:


                                       17
<PAGE>


<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 Morgan Stanley 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 Morgan Stanley 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 shares purchased in a single transaction,
together with shares of the Fund and other Morgan Stanley Dean Witter Funds
previously purchased at a price including a front-end sales charge (including
shares of the Fund and other Morgan Stanley 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.


                                       18
<PAGE>

       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 Morgan Stanley 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 Morgan Stanley Dean Witter Financial
Advisor who joined Morgan Stanley 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 Financial
Advisor'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

       (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


                                       19
<PAGE>

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. Moreover, in
determining whether a CDSC is applicable 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,


                                       20
<PAGE>

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, MSDW Services, 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 Morgan Stanley
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 (calculated 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 Morgan
Stanley 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


                                       21
<PAGE>

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 MSDW Advisors 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 transaction in Class D shares of the Fund and other Morgan Stanley
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 Morgan Stanley Dean Witter Multi-Class Funds, shares of FSC Funds
and shares of Morgan Stanley 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


                                       22
<PAGE>

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 Morgan Stanley Dean
Witter Financial Advisors 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.

       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. Because there is no requirement under
the Plan that the Distributor be reimbursed for all distribution expenses 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 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 Morgan Stanley Dean Witter Financial
Advisors or other Selected Broker-Dealer representatives at the time of sale
may be reimbursed in the subsequent calendar year. 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


                                       23
<PAGE>

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.

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 Morgan Stanley 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 SM. 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 Morgan Stanley 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


                                       24
<PAGE>

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 Morgan Stanley Dean Witter Financial
Advisor or other Selected Broker-Dealer representative 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 advisor.

       For further information regarding plan administration, custodial fees
and other details, investors should contact their Morgan Stanley Dean Witter
Financial Advisor or other Selected Broker-Dealer representative or the
Transfer Agent.

EXCHANGE PRIVILEGE

       Shares of each Class may be exchanged for shares of the same Class of
any other Morgan Stanley Dean Witter Multi-Class Fund without the imposition of
any exchange fee. Shares may also be exchanged for shares of the following
funds: Morgan Stanley Dean Witter Short-Term U.S. Treasury Trust, Morgan
Stanley Dean Witter Limited Term Municipal Trust, Morgan Stanley Dean Witter
Short-Term Bond Fund, Morgan Stanley Dean Witter Intermediate Term U.S.
Treasury Trust and five Morgan Stanley Dean Witter funds which are money market
funds (the "Exchange Funds"). Class A shares may also be exchanged for shares
of Morgan Stanley Dean Witter Multi-State Municipal Series Trust and Morgan
Stanley Dean Witter Hawaii Municipal Trust, which are Morgan Stanley Dean
Witter Funds sold with a front-end sales charge ("FSC Funds"). Class B shares
may also be exchanged for shares of Morgan Stanley Dean Witter Global
Short-Term Income Fund Inc. ("Global Short-Term") which is a Morgan Stanley
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 Morgan Stanley 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 Morgan Stanley 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


                                       25
<PAGE>

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 Morgan Stanley 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 Morgan Stanley
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 Morgan Stanley 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 Morgan Stanley
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 Morgan Stanley 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 any time by the Fund and/or any of such Morgan Stanley
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 Morgan Stanley Dean Witter Financial Advisor or other
Selected Broker-Dealer representative 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


                                       26
<PAGE>

are part of the account information, shareholders may initiate an exchange of
shares of the Fund for shares of any of the above Morgan Stanley Dean Witter
Funds (for which the Exchange Privilege is available) pursuant to this Exchange
Privilege by contacting their Morgan Stanley Dean Witter Financial Advisor or
other Selected Broker-Dealer representative (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 Morgan Stanley
Dean Witter Financial Advisor or other Selected Broker-Dealer representative,
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 Morgan Stanley Dean Witter Funds in
the past.

       For further information regarding the Exchange Privilege, shareholders
should contact their Morgan Stanley Dean Witter Financial Advisor or other
Selected Broker-Dealer representative 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 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 repur-


                                       27
<PAGE>

chase 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 Morgan Stanley Dean Witter Financial
Advisor or other Selected Broker-Dealer representative 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.

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


                                       28
<PAGE>

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 advisors 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 "average 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.


                                       29
<PAGE>

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 MSDW Advisors, MSDW
Services and MSDW Distributors 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
requires, among other things, that personal securities transactions by
employees of the companies be subject to an advance clearance process to
monitor that no Morgan Stanley 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 Morgan Stanley 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.


                                       30
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<PAGE>

Morgan Stanley Dean Witter
S&P 500 Select Fund
Two World Trade Center
New York, New York 10048                    MORGAN STANLEY
                                            DEAN WITTER 
TRUSTEES                                    S&P 500 SELECT FUND 
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

Guy G. Rutherfurd, Jr.
Vice President

Thomas F. Caloia
Treasurer

CUSTODIAN
The 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
PricewaterhouseCoopers LLP
1177 Avenue of the Americas
New York, New York 10036

INVESTMENT MANAGER
Morgan Stanley Dean Witter Advisors Inc.

                                                       PROSPECTUS--JULY 30, 1998






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