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

                   MORGAN STANLEY DEAN WITTER
                   S&P 500 SELECT FUND
                   PROSPECTUS -- JULY 30, 1998
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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.
    

TABLE OF CONTENTS

Prospectus Summary........................................................  2
Summary of Fund Expenses..................................................  4
The Fund and Its Management...............................................  5
Investment Objective and Policies ........................................  5
 Risk Considerations and Investment Practices.............................  7
Investment Restrictions ..................................................  9
Underwriting.............................................................. 10
                                                                       
                                                                       
Purchase of Fund Shares--Continuous Offering.............................. 10
                                                                       
                                                                       
Shareholder Services...................................................... 18
Redemptions and Repurchases............................................... 21
Dividends, Distributions and Taxes........................................ 22
Performance Information................................................... 22
Additional Information ................................................... 23
                                                         
   
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.
    

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.

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)

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 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

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<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,
FUND              diversified 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.
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SHARES            Shares of beneficial interest with $0.01 par value (see page 23). The Fund offers four Classes of shares,
OFFERED           each with a different combination of sales charges, ongoing fees and other features (see pages 10-18).
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INITIAL           Shares of the Fund are being offered in an underwriting by Morgan Stanley Dean Witter Distributors
OFFERING          Inc. at $10.00 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.
- -------------------------------------------------------------------------------------------------------------------------------
CONTINUOUS        A continuous offering of shares of the Fund will commence within approximately two weeks after the
OFFERING/         Closing Date. The minimum initial investment for each Class is $1,000 ($100 if the account is opened
MINIMUM           through EasyInvest(SM)). Class D shares are only available to persons investing $5 million ($25 million
PURCHASE          for certain qualified plans) or more and to certain other limited categories of investors. For the
                  purpose of meeting the minimum $5 million (or $25 million) investment for Class D shares, and
                  subject to the $1,000 minimum initial investment for each Class of the Fund, an investor's existing
                  holdings of Class A shares and shares of funds for which 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 10).
- -------------------------------------------------------------------------------------------------------------------------------
INVESTMENT        The investment objective of the Fund is to provide a total return (before expenses) that exceeds the
OBJECTIVE         total return of the S&P 500 Index (see page 5).
- -------------------------------------------------------------------------------------------------------------------------------
INVESTMENT        Morgan Stanley Dean Witter Advisors Inc. ("MSDW Advisors"), the Investment Manager of the Fund,
MANAGER           and its 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 5).
- -------------------------------------------------------------------------------------------------------------------------------
MANAGEMENT        The Investment Manager receives a monthly fee at the annual rate of 0.60% of the Fund's average daily
FEE               net assets. 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 5).
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UNDERWRITER AND   Morgan Stanley Dean Witter Distributors Inc. (the "Distributor") is the Fund's Underwriter and
DISTRIBUTOR AND   Distributor. The Fund has adopted a distribution plan pursuant to Rule 12b-1 under the Investment
DISTRIBUTION      Company Act (the "12b-1 Plan") with respect to the distribution fees paid by the Class A, Class B and
FEE               Class C shares of the Fund to the Distributor. The entire 12b-1 fee payable by Class A and a portion
                  of the 12b-1 fee payable by each of Class B and Class C equal to 0.25% of the average daily net assets
                  of the Class are currently each characterized as a service fee within the meaning of the National
                  Association of Securities Dealers, Inc. guidelines. The remaining portion of the 12b-1 fee, if any, is
                  characterized as an asset-based sales charge (see pages 10 and 17).
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ALTERNATIVE       Four classes of shares are offered:
PURCHASE          
ARRANGEMENTS      o Class A shares are offered with a front-end sales charge, starting at 5.25% and reduced for larger
                  purchases. Investments of $1 million or more (and investments by certain other limited categories of
                  investors) are not subject to any sales charge at the time of purchase but a contingent deferred sales charge
                  ("CDSC") of 1.0% may be imposed on redemptions within one year of purchase. The Fund is authorized to
                  reimburse the Distributor for specific expenses incurred in promoting the distribution of the Fund's Class A
                  shares and servicing shareholder accounts pursuant to the Fund's 12b-1 Plan. Reimbursement may in no event
                  exceed an amount equal to payments at an annual rate of 0.25% of average daily net assets of the Class (see
                  pages 10, 13 and 17).
- -------------------------------------------------------------------------------------------------------------------------------
</TABLE>
    

2
<PAGE>

   
<TABLE>
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<S>               <C>
                  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 10, 15 and 17).

                  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 10, 16 and 17).

                  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 10 and 17).
- -------------------------------------------------------------------------------------------------------------------------------
DIVIDENDS AND    Dividends from net investment income and distributions from net capital gains, if any, are paid at least
CAPITAL GAINS    once each year. The Fund may, however, determine to retain all or part of any net long-term capital
DISTRIBUTIONS    gains in any year for reinvestment. Dividends and capital gains distributions paid on shares of a Class
                 are automatically reinvested in additional shares of the same Class at net asset value unless the
                 shareholder elects to receive cash. Shares acquired by dividend and distribution reinvestment will not
                 be subject to any sales charge or CDSC (see pages 18 and 22).
- -------------------------------------------------------------------------------------------------------------------------------
REDEMPTION       Shares are redeemable by the shareholder at net asset value less any applicable CDSC on Class A,
                 Class B or Class C shares. An account may be involuntarily redeemed if the total value of the account
                 is less than $100 or, if the account was opened through EasyInvest(SM), if after twelve months the
                 shareholder has invested less than $1,000 in the account (see page 21).
- -------------------------------------------------------------------------------------------------------------------------------
RISK             An investment in the Fund should be considered a long-term holding and subject to all the risks
CONSIDERATIONS   associated with investing in equity securities. The market value of the Fund's portfolio securities and,
                 therefore, the Fund's net asset value per share, will increase or decrease due to a variety of economic,
                 market or political factors which cannot be predicted. The Fund 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 7-9) before making an investment in
                 the Fund.
- ------------------------------------------------------------------------------------------------------------------------------- 
</TABLE>
    

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

                                                                               3
<PAGE>

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

The following table illustrates all expenses and fees that a shareholder of the
Fund will incur. The 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."

<TABLE>
<CAPTION>
                                                                                  1 Year     3 Years
EXAMPLES                                                                          ------     -------
<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.

4
<PAGE>

THE FUND AND ITS MANAGEMENT
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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.

      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

                                                                               5
<PAGE>

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 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

6
<PAGE>

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 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

                                                                               7
<PAGE>

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.

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 Manager and the services provided to shareholders by the Distributor
and the Transfer Agent depend on the smooth functioning of their computer
systems. Many computer software systems in use today cannot recognize the year
2000, but revert to 1900 or some other date, due to the manner in which dates
were encoded and calculated. That failure could have a negative impact on the
handling of securities trades, pricing and account services. The Investment
Manager, the Distributor and the Transfer Agent have been actively working on
necessary changes to their own computer systems to prepare for the year 2000
and

8
<PAGE>

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.


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.

                                                                               9
<PAGE>

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 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 fact-ors to consider in selecting which Class of
shares to purchase.

10
<PAGE>

      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
B, Class C or Class D shares. If no Class is specified, the Transfer Agent will
not process the transaction until the proper Class is identified. The minimum
initial purchase in the case of investments through EasyInvest(SM), 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
sum-

                                                                              11
<PAGE>

mary is qualified in its entirety by detailed discussion of each Class that
follows this summary.

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

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

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

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

CLASS D SHARES. Class D shares are available only to limited categories of
investors (see "No Load Alternative--Class D Shares" below). Class D shares are
sold at net asset value with no initial sales charge or CDSC. They are not
subject to any 12b-1 fees. See "No Load Alternative--Class D Shares."

SELECTING A PARTICULAR CLASS. In deciding which Class of Fund shares to
purchase, investors should consider the following factors, as well as any other
relevant facts and circumstances:

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

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

      For the purpose of meeting the $5 million (or $25 million) minimum
investment amount for Class D shares, holdings of Class A shares in all 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 appli-

12
<PAGE>

cable 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:

- -----------------------------------------------------------------------------
                                                           CONVERSION 
   CLASS          SALES CHARGE          12b-1 FEE           FEATURE 
- -----------------------------------------------------------------------------
     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 
- -----------------------------------------------------------------------------

      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:

<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 pur-

                                                                              13
<PAGE>

chase 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.

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.

14
<PAGE>

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


CONTINGENT DEFERRED SALES CHARGE
ALTERNATIVE--CLASS B SHARES

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

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

<TABLE>
<CAPTION>
           Year Since
            Purchase                CDSC as a Percentage
          Payment Made               of Amount Redeemed
          ------------               ------------------
<S>                                        <C> 
First ..........................           5.0%
Second .........................           4.0%
Third ..........................           3.0%
Fourth .........................           2.0%
Fifth ..........................           2.0%
Sixth ..........................           1.0%
Seventh and thereafter .........           None
</TABLE>

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

<TABLE>
<CAPTION>
           Year Since
            Purchase               CDSC as a Percentage
          Payment Made              of Amount Redeemed
          ------------              ------------------
<S>                                       <C> 
First .........................           2.0%
Second ........................           2.0%
Third .........................           1.0%
Fourth and thereafter .........           None
</TABLE>

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

                                                                              15
<PAGE>

      (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 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

16
<PAGE>

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 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

                                                                              17
<PAGE>

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 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

18
<PAGE>

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 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 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

                                                                              19
<PAGE>

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 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

20
<PAGE>

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

                                                                              21
<PAGE>

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

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

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

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

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

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

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

      Shareholders should consult their tax 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

22
<PAGE>

may also advertise its performance relative to certain performance rankings and
indexes compiled by independent organizations, such as mutual fund performance
rankings of Lipper Analytical Services, Inc.

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

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

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

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

CODE OF ETHICS. Directors, officers and employees of 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.

                                                                              23
<PAGE>

MORGAN STANLEY DEAN WITTER
S&P 500 SELECT FUND
TWO WORLD TRADE CENTER
NEW YORK, NEW YORK 10048


TRUSTEES

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


OFFICERS

Charles A. Fiumefreddo
Chairman and Chief Executive Officer

Barry Fink
Vice President, Secretary and
General Counsel

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.



<PAGE>

STATEMENT OF ADDITIONAL INFORMATION
                                         MORGAN STANLEY DEAN WITTER
                                         S&P 500 SELECT FUND
   
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 S&P 500 Composite Stock Price Index (the "S&P 500 Index"). The Fund seeks
to meet its investment objective by investing, under normal circumstances, at
least 80% of the value of its total assets in common stocks of selected
companies (including ADRs of foreign companies) included in the S&P 500 Index
utilizing the equity research provided by selected equity research firms. There
can be no assurance that the Fund's objective will be achieved. (See
"Investment Practices 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.

   
     A Prospectus for the Fund dated July 30, 1998, which provides the basic
information you should know before investing in the Fund, may be obtained
without charge from the Fund at its address or telephone numbers listed below
or from the Fund's Distributor, Morgan Stanley Dean Witter Distributors Inc.,
or from Dean Witter Reynolds Inc, at any of its branch offices. This Statement
of Additional Information is not a Prospectus. It contains information in
addition to and more detailed than that set forth in the Prospectus. It is
intended to provide additional information regarding the activities and
operations of the Fund, and should be read in conjunction with the Prospectus.
    




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)

<PAGE>

TABLE OF CONTENTS
- --------------------------------------------------------------------------------

<TABLE>
<S>                                                                                        <C>
The Fund and Its Management ..............................................................  3
Trustees and Officers ....................................................................  7
Investment Practices and Policies ........................................................ 13
Investment Restrictions .................................................................. 18
Portfolio Transactions and Brokerage ..................................................... 19
Underwriting ............................................................................. 20
The Distributor .......................................................................... 21
Determination of Net Asset Value ......................................................... 24
Purchase of Fund Shares .................................................................. 24
Shareholder Services ..................................................................... 27
Redemptions and Repurchases .............................................................. 31
Dividends, Distributions and Taxes ....................................................... 33
Performance Information .................................................................. 34
Shares of the Fund ....................................................................... 35
Custodian and Transfer Agent ............................................................. 35
Independent Accountants .................................................................. 36
Reports to Shareholders .................................................................. 36
Legal Counsel ............................................................................ 36
Experts .................................................................................. 36
Registration Statement ................................................................... 36
Statement of Assets and Liabilities at July 22, 1998 and Statement of Operations for the
  period June 8, 1998 through July 22, 1998 .............................................. 37
Report of Independent Accountants ........................................................ 39
</TABLE>

                                       2
<PAGE>

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

THE FUND


     The Fund is a trust of the type commonly known as a "Massachusetts
business trust" and was organized under the laws of the Commonwealth of
Massachusetts on June 8, 1998.


THE INVESTMENT MANAGER

     Morgan Stanley Dean Witter Advisors Inc. (the "Investment Manager" or
"MSDW Advisors"), a Delaware corporation, whose address is Two World Trade
Center, New York, New York 10048, is the Fund's Investment Manager. MSDW
Advisors is a wholly-owned subsidiary of Morgan Stanley Dean Witter & Co.
("MSDW"), a Delaware corporation. The daily management of the Fund and research
relating to the Fund's portfolio are conducted by or under the direction of
officers of the Fund and of the Investment Manager, subject to review by the
Fund's Board of Trustees. Information as to these Trustees and officers is
contained under the caption "Trustees and Officers."

     MSDW Advisors is also the investment manager or investment advisor of the
following investment companies, which are collectively referred to as the
"Morgan Stanley Dean Witter Funds":



<TABLE>
OPEN-END FUNDS
<S>    <C>
 1     Active Assets California Tax-Free Trust
 2     Active Assets Government Securities Trust
 3     Active Assets Money Trust
 4     Active Assets Tax-Free Trust
 5     Morgan Stanley Dean Witter American Value Fund
 6     Morgan Stanley Dean Witter Balanced Growth Fund
 7     Morgan Stanley Dean Witter Balanced Income Fund
 8     Morgan Stanley Dean Witter California Tax-Free Daily Income Trust
 9     Morgan Stanley Dean Witter California Tax-Free Income Fund
10     Morgan Stanley Dean Witter Capital Appreciation Fund
11     Morgan Stanley Dean Witter Capital Growth Securities
12     Morgan Stanley Dean Witter Competitive Edge Fund, "Best Ideas" Portfolio
13     Morgan Stanley Dean Witter Convertible Securities Trust
14     Morgan Stanley Dean Witter Developing Growth Securities Trust
15     Morgan Stanley Dean Witter Diversified Income Trust
16     Morgan Stanley Dean Witter Dividend Growth Securities Inc.
17     Morgan Stanley Dean Witter Equity Fund
18     Morgan Stanley Dean Witter European Growth Fund Inc.
19     Morgan Stanley Dean Witter Federal Securities Trust
20     Morgan Stanley Dean Witter Financial Services Trust
21     Morgan Stanley Dean Witter Fund of Funds
22     Dean Witter Global Asset Allocation Fund
23     Morgan Stanley Dean Witter Global Dividend Growth Securities
24     Morgan Stanley Dean Witter Global Short-Term Income Fund Inc.
25     Morgan Stanley Dean Witter Global Utilities Fund
26     Morgan Stanley Dean Witter Growth Fund
27     Morgan Stanley Dean Witter Hawaii Municipal Trust
28     Morgan Stanley Dean Witter Health Sciences Trust
29     Morgan Stanley Dean Witter High Yield Securities Inc.
</TABLE>

                                       3
<PAGE>


<TABLE>
<S>    <C>
30     Morgan Stanley Dean Witter Income Builder Fund
31     Morgan Stanley Dean Witter Information Fund
32     Morgan Stanley Dean Witter Intermediate Income Securities
33     Morgan Stanley Dean Witter Intermediate Term U.S. Treasury Trust
34     Morgan Stanley Dean Witter International SmallCap Fund
35     Morgan Stanley Dean Witter Japan Fund
36     Morgan Stanley Dean Witter Limited Term Municipal Trust
37     Morgan Stanley Dean Witter Liquid Asset Fund Inc.
38     Morgan Stanley Dean Witter Market Leader Trust
39     Morgan Stanley Dean Witter Mid-Cap Dividend Growth Securities
40     Morgan Stanley Dean Witter Mid-Cap Growth Fund
41     Morgan Stanley Dean Witter Multi-State Municipal Series Trust
42     Morgan Stanley Dean Witter Natural Resource Development Securities Inc.
43     Morgan Stanley Dean Witter New York Municipal Money Market Trust
44     Morgan Stanley Dean Witter New York Tax-Free Income Fund
45     Morgan Stanley Dean Witter Pacific Growth Fund Inc.
46     Morgan Stanley Dean Witter Precious Metals and Minerals Trust
47     Dean Witter Retirement Series
48     Morgan Stanley Dean Witter Select Dimensions Investment Series
49     Morgan Stanley Dean Witter Select Municipal Reinvestment Fund
50     Morgan Stanley Dean Witter Short-Term Bond Fund
51     Morgan Stanley Dean Witter Short-Term U.S. Treasury Trust
52     Morgan Stanley Dean Witter Special Value Fund
53     Morgan Stanley Dean Witter S&P 500 Index Fund
54     Morgan Stanley Dean Witter Strategist Fund
55     Morgan Stanley Dean Witter Tax-Exempt Securities Trust
56     Morgan Stanley Dean Witter Tax-Free Daily Income Trust
57     Morgan Stanley Dean Witter U.S. Government Money Market Trust
58     Morgan Stanley Dean Witter U.S. Government Securities Trust
59     Morgan Stanley Dean Witter Utilities Fund
60     Morgan Stanley Dean Witter Value-Added Market Series
61     Morgan Stanley Dean Witter Variable Investment Series
62     Morgan Stanley Dean Witter World Wide Income Trust

CLOSED-END FUNDS
 1     InterCapital California Insured Municipal Income Trust
 2     InterCapital California Quality Municipal Securities
 3     Dean Witter Government Income Trust
 4     High Income Advantage Trust
 5     High Income Advantage Trust II
 6     High Income Advantage Trust III
 7     InterCapital Income Securities Inc.
 8     InterCapital Insured California Municipal Securities
 9     InterCapital Insured Municipal Bond Trust
10     InterCapital Insured Municipal Income Trust
11     InterCapital Insured Municipal Securities
</TABLE>

                                       4
<PAGE>


<TABLE>
<S>    <C>
12     InterCapital Insured Municipal Trust
13     Municipal Income Opportunities Trust
14     Municipal Income Opportunities Trust II
15     Municipal Income Opportunities Trust III
16     Municipal Income Trust
17     Municipal Income Trust II
18     Municipal Income Trust III
19     Municipal Premium Income Trust
20     InterCapital New York Quality Municipal Securities
21     Morgan Stanley Dean Witter Prime Income Trust
22     InterCapital Quality Municipal Income Trust
23     InterCapital Quality Municipal Investment Trust
24     InterCapital Quality Municipal Securities
</TABLE>

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

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

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

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

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

     Under the terms of the Agreement, in addition to managing the Fund's
investments, the Investment Manager maintains certain of the Fund's books and
records and furnishes, at its own expense, such office space, facilities,
equipment, clerical help and bookkeeping and certain legal services as the Fund
may reasonably require in the conduct of its business, including the
preparation of prospectuses, statements of additional information, proxy
statements and reports required to be filed with federal and


                                       5
<PAGE>

state securities commissions (except insofar as the participation or assistance
of independent accountants and attorneys is, in the opinion of the Investment
Manager, necessary or desirable). In addition, the Investment Manager pays the
salaries of all personnel, including officers of the Fund, who are employees of
the Investment Manager. The Investment Manager also bears the cost of telephone
service, heat, light, power and other utilities provided to the Fund. The
Investment Manager has retained MSDW Services to perform its administrative
services under the Agreement.

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

     As full compensation for the services and facilities furnished to the Fund
and expenses of the Fund assumed by the Investment Manager, the Fund pays the
Investment Manager monthly compensation calculated daily by applying the annual
rate of 0.60% to the Fund's daily net assets. The management fee is allocated
among the Classes pro rata based on the net assets of the Fund attributable to
each Class. The Investment Manager has agreed to assume all expenses (except
for brokerage and 12b-1 fees) and to waive the compensation provided for in its
Management Agreement 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 Agreement provides that in the absence of willful misfeasance, bad
faith, gross negligence or reckless disregard of its obligations thereunder,
the Investment Manager is not liable to the Fund or any of its investors for
any act or omission by the Investment Manager or for any losses sustained by
the Fund or its investors. The Agreement in no way restricts the Investment
Manager from acting as investment manager or advisor to others.

     The Investment Manager will absorb the organizational expenses of the Fund
incurred prior to the offering of its shares which is estimated to be
approximately $25,000. The offering costs of the Fund will be deferred and
amortized on the straight line method over a period of benefit of approximately
one year or less from the date of commencement of the Fund's operations.

     The Agreement was initially approved by the Trustees on July 22, 1998 and
by MSDW Advisors, as the then sole shareholder, on July 22, 1998. The Agreement
may be terminated at any time, without


                                       6
<PAGE>

penalty, on thirty days' notice by the Trustees of the Fund, by the holders of
a majority of the outstanding shares of the Fund, as defined in the Investment
Company Act of 1940, as amended (the "Act"), or by the Investment Manager. The
Agreement will automatically terminate in the event of its assignment (as
defined in the Act).

     Under its terms, the Agreement has an initial term ending April 30, 2000
and will continue from year to year thereafter, provided continuance of the
Agreement is approved at least annually by the vote of the holders of a
majority of the outstanding shares of the Fund, as defined in the Act, or by
the Trustees of the Fund; provided that in either event such continuance is
approved annually by the vote of a majority of the Trustees of the Fund who are
not parties to the Agreement or "interested persons" (as defined in the Act) of
any such party (the "Independent Trustees"), which vote must be cast in person
at a meeting called for the purpose of voting on such approval.

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

TRUSTEES AND OFFICERS
- --------------------------------------------------------------------------------

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





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

Charles A. Fiumefreddo* (65) ..............   Chairman, Director or Trustee, President and Chief
Chairman, President,                          Executive Officer of the Morgan Stanley Dean
Chief Executive Officer and Trustee           Witter Funds; Chairman, Chief Executive Officer
Two World Trade Center                        and Trustee of the TCW/DW Funds; formerly
New York, New York                            Chairman, Chief Executive Officer and Director of
                                              MSDW Advisors, MSDW Distributors and MSDW
                                              Services, Executive Vice President and Director of
                                              Dean Witter Reynolds Inc. ("DWR"), Chairman
                                              and Director of Morgan Stanley Dean Witter Trust
                                              FSB ("MSDW Trust"), and Director and/or officer of
                                              various MSDW subsidiaries (until June, 1998).
</TABLE>

                                       7
<PAGE>


<TABLE>
<CAPTION>
 NAME, AGE, POSITION WITH FUND AND ADDRESS         PRINCIPAL OCCUPATIONS DURING LAST FIVE YEARS
- -------------------------------------------   -----------------------------------------------------
<S>                                           <C>
Edwin J. Garn (65) ........................   Director or Trustee of the Morgan Stanley Dean
Trustee                                       Witter Funds; formerly United States Senator
c/o Huntsman Corporation                      (R-Utah) (1974-1992) and Chairman, Senate
500 Huntsman Way                              Banking Committee (1980-1986); formerly Mayor
Salt Lake City, Utah                          of Salt Lake City, Utah (1971-1974); formerly
                                              Astronaut, Space Shuttle Discovery (April 12-19,
                                              1985); Vice Chairman, Huntsman Corporation
                                              (since January, 1993); Director of Franklin Covey
                                              (time management systems), John Alden Financial
                                              Corporation (health insurance), United Space
                                              Alliance (joint venture between Lockheed Martin
                                              and the Boeing Company) and Nuskin Asia Pacific
                                              (multilevel marketing); member of the board of
                                              various civic and charitable organizations.

John R. Haire (73) ........................   Chairman of the Audit Committee and Director or
Trustee                                       Trustee of the Morgan Stanley Dean Witter Funds;
Two World Trade Center                        Chairman of the Audit Committee and Trustee of
New York, New York                            the TCW/DW Funds; formerly Chairman of the
                                              Independent Directors or Trustees of the Morgan
                                              Stanley Dean Witter Funds and the TCW/DW
                                              Funds (until June, 1998); formerly President,
                                              Council for Aid to Education (1978-1989) and
                                              Chairman and Chief Executive Officer of Anchor
                                              Corporation, an Investment Adviser (1964-1978).

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

Dr. Manuel H. Johnson (49) ................   Senior Partner, Johnson Smick International, Inc.,
Trustee                                       a consulting firm; Director or Trustee of the Morgan
c/o Johnson Smick International, Inc.         Stanley Dean Witter Funds; Trustee of the
1133 Connecticut Avenue, N.W.                 TCW/DW Funds; Director of NASDAQ (since June,
Washington, D.C.                              1995); Co-Chairman and a founder of the Group of
                                              Seven Council (G7C), an international economic
                                              commission (since September, 1990); Director of
                                              Greenwich Capital Markets, Inc. (broker-dealer)
                                              and NVR Inc. (home construction); Chairman and
                                              Trustee of the Financial Accounting Foundation
                                              (oversight organization of the Financial Accounting
                                              Standards Board); formerly Vice Chairman of the
                                              Board of Governors of the Federal Reserve System
                                              (1986-1990) and Assistant Secretary of the U.S.
                                              Treasury (1982-1986).
</TABLE>

                                       8
<PAGE>


<TABLE>
<CAPTION>
 NAME, AGE, POSITION WITH FUND AND ADDRESS         PRINCIPAL OCCUPATIONS DURING LAST FIVE YEARS
- -------------------------------------------   -----------------------------------------------------
<S>                                           <C>
Michael E. Nugent (62) ....................   General Partner, Triumph Capital, L.P., a private
Trustee                                       investment partnership; Director or Trustee of the
c/o Triumph Capital, L.P.                     Morgan Stanley Dean Witter Funds; Trustee of the
237 Park Avenue                               TCW/DW Funds; formerly Vice President, Bankers
New York, New York                            Trust Company and BT Capital Corporation
                                              (1984-1988); Director of various business
                                              organizations.

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

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

Barry Fink (43) ...........................   Senior Vice President (since March, 1997),
Vice President,                               Secretary, General Counsel (since February, 1997)
Secretary and General Counsel                 and Director (since July, 1998) of MSDW Advisors
Two World Trade Center                        and MSDW Services; Senior Vice President (since
New York, New York                            March, 1997) and Assistant Secretary and Assistant
                                              General Counsel of MSDW Distributors; Assistant
                                              Secretary of DWR (since August, 1996); Vice
                                              President, Secretary and General Counsel of the
                                              Morgan Stanley Dean Witter Funds and the
                                              TCW/DW Funds (since February, 1997); previously
                                              First Vice President (since June, 1993-February,
                                              1997), Vice President (until June, 1993) and
                                              Assistant General Counsel and Assistant Secretary
                                              of MSDW Advisors and MSDW Services; and
                                              Assistant Secretary of the Morgan Stanley Dean
                                              Witter Funds and the TCW/DW Funds.

Guy G. Rutherfurd, Jr. (57) ...............   Senior Vice President of MSDW Advisors (since
Vice President                                February, 1997); formerly Executive Vice President
Two World Trade Center                        and Chief Investment Officer of Nomura Asset
New York, New York                            Management (U.S.A.) Inc. (May, 1992-February,
                                              1997).

Thomas F. Caloia (52) .....................   First Vice President and Assistant Treasurer of
Treasurer                                     MSDW Advisors and MSDW Services; Treasurer
Two World Trade Center                        of the Morgan Stanley Dean Witter Funds and the
New York, New York                            TCW/DW Funds.

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

                                       9
<PAGE>

     In addition, Mitchell M. Merin, President and Chief Executive Officer of
MSDW Advisors and MSDW Services, Chairman and Director of MSDW Distributors and
MSDW Trust, Executive Vice President and Director of DWR, and Director of SPS
Transaction Services, Inc. and various other MSDW subsidiaries, Robert M.
Scanlan, President and Chief Operating Officer of MSDW Advisors and MSDW
Services, Executive Vice President of MSDW Distributors and MSDW Trust and
Director of MSDW Trust, Robert S. Giambrone, Senior Vice President of MSDW
Advisors, MSDW Services, MSDW Distributors and MSDW Trust and Director of MSDW
Trust, Joseph J. McAlinden, Executive Vice President and Chief Investment
Officer of MSDW Advisors and Director of MSDW Trust, and Peter Hermann, George
Paoletti and Jayne Stevlingson, Vice Presidents of MSDW Advisors, and Teresa
McRoberts, Assistant Vice President of MSDW Advisors, are Vice Presidents of
the Fund. In addition, Marilyn K. Cranney and Carsten Otto, First Vice
Presidents and Assistant General Counsels of MSDW Advisors and MSDW Services,
Lou Anne D. McInnis, Ruth Rossi and Frank Bruttomesso, Vice Presidents and
Assistant General Counsels of MSDW Advisors and MSDW Services, and Todd Lebo,
staff attorney with MSDW Advisors, are Assistant Secretaries of the Fund.


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

     The Board of Trustees consists of nine (9) trustees. These same
individuals also serve as directors or trustees for all of the Morgan Stanley
Dean Witter Funds, and are referred to in this section as Trustees. As of the
date of this Statement of Additional Information, there are a total of 86
Morgan Stanley Dean Witter Funds, comprised of 132 portfolios. As of June 30,
1998, the Morgan Stanley Dean Witter Funds had total net assets of
approximately $106.8 billion and more than six million shareholders.

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

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

     All of the Independent Trustees serve as members of the Audit Committee.
Three of them also serve as members of the Derivatives Committee. During the
calendar year ended December 31, 1997, the Audit Committee, the Derivatives
Committee and the Independent Trustees held a combined total of seventeen
meetings.

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

     The Audit Committee is charged with recommending to the full Board the
engagement or discharge of the Fund's independent accountants; directing
investigations into matters within the scope of the independent accountants'
duties, including the power to retain outside specialists; reviewing with the
independent accountants the audit plan and results of the auditing engagement;
approving professional


                                       10
<PAGE>

services provided by the independent accountants and other accounting firms
prior to the performance of such services; reviewing the independence of the
independent accountants; considering the range of audit and non-audit fees; and
reviewing the adequacy of the Fund's system of internal controls.

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

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

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


COMPENSATION OF INDEPENDENT TRUSTEES

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

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


                         FUND COMPENSATION (ESTIMATED)




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

 

                                       11
<PAGE>

     The following table illustrates the compensation paid to the Fund's
Independent Trustees for the calendar year ended December 31, 1997 for services
to the 84 Morgan Stanley Dean Witter Funds and, in the case of Messrs. Haire,
Johnson, Nugent and Schroeder, the 14 TCW/DW Funds that were in operation at
December 31, 1997. Mr. Haire serves as Chairman of the Audit Committee of each
Morgan Stanley Dean Witter Fund and each TCW/DW Fund and, prior to June 1,
1998, also served as Chairman of the Independent Directors or Trustees of those
Funds. With respect to Messrs. Haire, Johnson, Nugent and Schroeder, the TCW/DW
Funds are included solely because of a limited exchange privilege between those
Funds and five Morgan Stanley Dean Witter Money Market Funds. Mr. Hedien's term
as Director or Trustee of each Morgan Stanley Dean Witter Fund commenced on
September 1, 1997.


   CASH COMPENSATION FROM MORGAN STANLEY DEAN WITTER FUNDS AND TCW/DW FUNDS




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

     As of the date of this Statement of Additional Information, 57 of the
Morgan Stanley Dean Witter Funds, not including the Fund, have adopted a
retirement program under which an Independent Trustee who retires after serving
for at least five years (or such lesser period as may be determined by the
Board) as an Independent Director or Trustee of any Morgan Stanley Dean Witter
Fund that has adopted the retirement program (each such Fund referred to as an
"Adopting Fund" and each such Trustee referred to as an "Eligible Trustee") is
entitled to retirement payments upon reaching the eligible retirement age
(normally, after attaining age 72). Annual payments are based upon length of
service. Currently, upon retirement, each Eligible Trustee is entitled to
receive from the Adopting Fund, commencing as of his or her retirement date and
continuing for the remainder of his or her life, an annual retirement benefit
(the "Regular Benefit") equal to 29.41% of his or her Eligible Compensation
plus 0.4901667% of such Eligible Compensation for each full month of service as
an Independent Director or Trustee of any Adopting Fund in excess of five years
up to a maximum of 58.82% after ten years of service. The foregoing percentages
may be changed by the Board.(1) "Eligible Compensation" is one-fifth of the
total compensation earned by such Eligible Trustee for service to the Adopting
Fund in the five year period prior to the date of the Eligible Trustee's
retirement. Benefits under the retirement program are not secured or funded by
the Adopting Funds.



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


                                       12
<PAGE>

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


         RETIREMENT BENEFITS FROM ALL MORGAN STANLEY DEAN WITTER FUNDS



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

- --------------------
(2)   Based on current levels of compensation. Amount of annual benefits also
      varies depending on the Trustee's elections described in Footnote (1)
      above.

(3)   This number reflects the effect of the extension of Mr. Haire's term as
      Director or Trustee until June 1, 1998.


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

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

ADDITIONAL INFORMATION CONCERNING THE S&P 500 INDEX


     As set forth above, the Fund's investment objective is to provide a total
return that (before operating expenses) outperforms the total return of the S&P
500 Index.

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

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


                                       13
<PAGE>

REPURCHASE AGREEMENTS

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

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

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

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

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

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

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

LENDING OF PORTFOLIO SECURITIES

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


                                       14
<PAGE>

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

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


STOCK INDEX FUTURES CONTRACTS.

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

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

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

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


                                       15
<PAGE>

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

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

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

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

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

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

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

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


                                       16
<PAGE>

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

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


WHEN-ISSUED AND DELAYED DELIVERY SECURITIES AND FORWARD COMMITMENTS

     From time to time 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 commitment. While the Fund will only purchase securities
on a when-issued, delayed delivery or forward commitment basis with the
intention of acquiring the securities, the Fund may sell the securities before
the settlement date, if it is deemed advisable. The securities so purchased or
sold are subject to market fluctuation and no interest or dividends accrue to
the purchaser prior to the settlement date. At the time the Fund makes the
commitment to purchase or sell securities on a when-issued, delayed delivery or
forward commitment basis, it will record the transaction and thereafter reflect
the value, each day, of such security purchased, or if a sale, the proceeds to
be received, in determning its net asset value. At the time of delivery of the
securities, their value may be more or less than the purchase or sale price.
The Fund will also establish a segregated account with its custodian bank in
which it will continually maintain cash or cash equivalents or other liquid
portfolio securities equal in value to commitments to purchase securities on a
when-issued, delayed delivery or forward commitment basis.


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 or debt
restructuring. The commitment for the purchase of any such security will not be
recognized in the portfolio of the Fund until the Investment Manager determines
that issuance of the security is probable. At such time, the Fund will record
the transaction and, in determining its net asset value, will reflect the value
of the security daily. At such time, the Fund will also establish a segregated
account with its custodian bank in which it will maintain cash or cash
equivalents or other liquid portfolio securities equal in value to recognized
commitments for such securities. The value of the Fund's commitments to
purchase the securities of any one issuer, together with the value of all
securities of such issuer owned by the Fund, may not exceed 5% of the value of
the Fund's total assets at the time the initial commitment to purchase such
securities is made (see "Investment Restrictions"). An increase in the
percentage of the Fund's assets committed to the purchase of securities on a
"when, as and if issued" basis may increase the volatility of its net asset
value. The Investment Manager and the Trustees do not believe that the net
asset value of the Fund will be adversely affected by its purchase of
securities on such basis. The Fund may also sell securities on a "when, as and
it issued" basis provided that the issuance of the security will result
automatically from the exchange or conversion of a security owned by the Fund
at the time of sale.


PORTFOLIO TURNOVER

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


                                       17
<PAGE>

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

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

     The Fund may not:

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

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

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

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

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

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

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

     8. Make short sales of securities.

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

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

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

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


                                       18
<PAGE>

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

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

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

     The policy of the Fund regarding purchases and sales of securities for its
portfolio is that primary consideration will be given to obtaining the most
favorable prices and efficient executions of transactions. Consistent with this
policy, when securities transactions are effected on a stock exchange, the
Fund's policy is to pay commissions which are considered fair and reasonable
without necessarily determining that the lowest possible commissions are paid
in all circumstances. The Fund believes that a requirement always to seek the
lowest possible commission cost could impede effective portfolio management and
preclude the Fund and the Investment Manager from obtaining a high quality of
brokerage and research services. In seeking to determine the reasonableness of
brokerage commissions paid in any transaction, the Investment Manager relies
upon its experience and knowledge regarding commissions generally charged by
various brokers and on its judgment in evaluating the brokerage and research
services received from the broker effecting the transaction. Such
determinations are necessarily subjective and imprecise, as in most cases an
exact dollar value for those services is not ascertainable.

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

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


                                       19
<PAGE>

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

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

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
Underwriting Agreement provides that the obligation of the Underwriter is
subject to certain conditions precedent (such as the filing of certain forms
and documents required by various federal and state agencies and the rendering
of certain opinions of counsel) and that the Underwriter will be obligated to
purchase the shares of the Fund on September 28, 1998, or such other date as
may be agreed upon between the Underwriter and the Fund and to purchase shares
of the Fund at a later date to be agreed upon between the Underwriter and the
Fund (each a "Closing Date"). Shares will not be issued and dividends will not
be declared by the Fund until after 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 $10.00 per share going to the Fund.

     The Underwriter may, however, receive contingent deferred sales charges
for future redemptions of Class A, Class B and Class C shares (see "Purchase of
Fund Shares--Continuous Offering" in the Prospectus).

     The Underwriter shall, regardless of its expected underwriting commitment,
be entitled and 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 pursuant to this
offering is 100 shares. Certificates for shares purchased will not be issued
unless requested by the shareholder in writing.

     The Underwriter has agreed to pay certain expenses of the initial offering
and the subsequent Continuous Offering of the Portfolio's shares. The Fund has
agreed to pay certain compensation to the Underwriter pursuant to a Plan of
Distribution pursuant to Rule 12b-1 under the Act, to compensate the
Underwriter for services it renders and the expenses it bears under the
Underwriting Agreement (see "The Distributor"). The Fund will bear the cost of
initial typesetting, printing and distribution of Prospectus and Statements of
Additional Information and supplements thereto to shareholders. The Fund has
agreed to indemnify the Underwriter against certain liabilities, including
liabilities under the Securities Act of 1933, as amended.


                                       20
<PAGE>

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

     As discussed in the Prospectus, shares of the Fund are distributed by
Morgan Stanley Dean Witter Distributors Inc. (the "Distributor"). The
Distributor has entered into a selected dealer agreement with DWR, which
through its own sales organization sells shares of the Fund. In addition, the
Distributor may enter into selected dealer agreements with other selected
broker-dealers. The Distributor, a Delaware corporation, is a wholly-owned
subsidiary of MSDW. The Board of Trustees of the Fund including a majority of
the Trustees who are not, and were not at the time they voted, interested
persons of the Fund, as defined in the Act ( the "Independent Trustees"),
approved, at their meeting held on July 22, 1998, a Distribution Agreement
appointing the Distributor as exclusive distributor of the Fund's shares and
providing for the Distributor to bear distribution expenses not borne by the
Fund. By its terms, the Distribution Agreement has an initial term ending April
30, 1999, and provides that it will remain in effect from year to year
thereafter if approved by the Board.

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


PLAN OF DISTRIBUTION

     The Fund has adopted a Plan of Distribution pursuant to Rule 12b-1 under
the Act (the "Plan") pursuant to which each Class, other than Class D, pays the
Distributor compensation accrued daily and payable monthly at the annual rate
of 0.25% of the average daily net assets of Class A and 1.0% of the average
daily net assets of each of Class B and Class C. The Distributor receives the
proceeds of front-end sales charges and of contingent deferred sales charges
imposed on certain redemptions of shares, which are separate and apart from
payments made pursuant to the Plan (see "Purchase of Fund Shares" in the
Prospectus).

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

     The Plan was adopted by a vote of the Trustees of the Fund on July 22,
1998 at a meeting of the Trustees called for the purpose of voting on such
Plan. The vote included the vote of a majority of the Trustees of the Fund who
are not "interested persons" of the Fund (as defined in the Act) and who have
no direct or indirect financial interest in the operation of the Plan (the
"Independent 12b-1 Trustees"). In making their decision to adopt the Plan, the
Trustees requested from the Distributor and received such information as they
deemed necessary to make an informed determination as to whether or not
adoption of the Plan was in the best interests of the shareholders of the Fund.
After due consideration of the information received, the Trustees, including
the Independent 12b-1 Trustees, determined that adoption


                                       21
<PAGE>

of the Plan would benefit the shareholders of the Fund. MSDW Advisors, as then
sole shareholder of the Fund, approved the Plan on July 28, 1997, whereupon the
Plan went into effect.

     Under its terms, the Plan will continue in effect until April 30, 1999 and
will remain in effect from year to year thereafter, provided such continuance
is approved annually by a vote of the Trustees in the manner described above.
Under the Plan and as required by Rule 12b-1, the Trustees will receive and
review promptly after the end of each fiscal quarter a written report provided
by the Distributor of the amounts expended by the Distributor under the Plan
and the purpose for which such expenditures were made.

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

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

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

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

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

     The gross sales credit is a charge which reflects commissions paid by DWR
to its Financial Advisors and Fund associated distribution-related expenses,
including sales compensation and overhead and other branch office
distribution-related expenses including: (a) the expenses of operating DWR's
branch offices in connection with the sale of Fund shares, including lease
costs, the salaries and employee benefits of operations and sales support
personnel, utility costs, communications costs and the costs of stationery and
supplies; (b) the costs of client sales seminars; (c) travel expenses of mutual
fund sales


                                       22
<PAGE>

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

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

     In the case of Class B shares, at any given time, the expenses in
distributing shares of the Fund may be more or less than the total of (i) the
payments made by the Fund pursuant to the Plan and (ii) the proceeds of
contingent deferred sales charges paid by investors upon redemption of shares.
Because there is no requirement under the Plan that the Distributor be
reimbursed for all expenses for all expenses with respect to Class B shares or
any requirement that the Plan be continued from year to year, this excess
amount does not constitute a liability of the Fund. Although there is no legal
obligation for the Fund to pay distribution expenses in excess of payments made
under the Plan and the proceeds of contingent deferred sales charges paid by
investors upon redemption of shares, if for any reason the Plan is terminated,
the Trustees will consider at that time the manner in which to treat such
expenses. Any cumulative expenses incurred, but not yet recovered through
distribution fees or contingent deferred sales charges, may or may not be
recovered through future distribution fees or contingent deferred sales
charges.

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


                                       23
<PAGE>

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

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

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

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

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

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



INITIAL SALES CHARGE ALTERNATIVE--CLASS A SHARES

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


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


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


                                       24
<PAGE>

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


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


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


     If the goal is exceeded and purchases pass the next sales charge level,
the sales charge on the entire amount of the purchase that results in passing
that level and on subsequent purchases will be subject to further reduced sales
charges in the same manner as set forth above under "Right of Accumulation,"
but there will be no retroactive reduction of sales charges on previous
purchases. For the purpose of determining whether the investor is entitled to a
further reduced sales charge applicable to purchases at or above a sales charge
level which exceeds the stated goal of a Letter of Intent, the cumulative
current net asset value of any shares owned by the investor in any other Morgan
Stanley Dean Witter Funds held by the shareholder which were previously
purchased at a price including afront-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) will be added to the cost or net asset value of
shares of the Fund owned by the investor. However, shares of "Exchange Funds"
(see "Shareholder Services--Exchange Privilege") and the purchase of shares of
other Morgan Stanley Dean Witter Funds will not be included in determining
whether the stated goal of a Letter of Intent has been reached.


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


CONTINGENT DEFERRED SALES CHARGE ALTERNATIVE --CLASS B SHARES


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


                                       25
<PAGE>

Witter Funds for which shares of front-end sales charge funds have been
exchanged (see "Shareholder Services--Exchange Privilege"), plus (d) increases
in the net asset value of the investor's shares above the total amount of
payments for the purchase of Fund shares made during the preceding six (three)
years. The CDSC will be paid to the Distributor.


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


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




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

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




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

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


                                       26
<PAGE>

LEVEL LOAD ALTERNATIVE--CLASS C SHARES

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


NO LOAD ALTERNATIVE--CLASS D SHARES

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

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

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

     Automatic Investment of Dividends and Distributions. As stated in the
Prospectus, all income dividends and capital gains distributions are
automatically paid in full and fractional shares of the applicable Class of the
Fund, unless the shareholder requests that they be paid in cash. Each purchase
of shares of the Fund is made upon the condition that the Transfer Agent is
thereby automatically appointed as agent of the investor to receive all
dividends and capital gains distributions on shares owned by the investor. Such
dividends and distributions will be paid, at the net asset value per share, in
shares of the applicable Class of the Fund (or in cash if the shareholder so
requests) as of the close of business on the record date. At any time an
investor may request the Transfer Agent, in writing, to have subsequent
dividends and/or capital gains distributions paid to him or her in cash rather
than shares. To assure sufficient time to process the change, such request
should be received by the Transfer Agent at least five business days prior to
the record date of the dividend or distribution. In the case of recently
purchased shares for which registration instructions have not been received on
the record date, cash payments will be made to DWR or other selected
broker-dealer, and will be forwarded to the shareholder, upon the receipt of
proper instructions. It has been and remains the Fund's policy and practice
that, if checks for dividends or distributions paid in cash remain uncashed, no
interest will accrue on amounts represented by such uncashed checks.

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

     EasyInvestSM. 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


                                       27
<PAGE>

semi-monthly, monthly or quarterly basis, to the Transfer Agent for investment
in shares of the Fund. Shares purchased through EasyInvest will be added to the
shareholder's existing account at the net asset value calculated the same
business day the transfer of funds is effected (subject to any applicable sales
charges). Shares of the Morgan Stanley Dean Witter money market funds redeemed
in connection with EasyInvest are redeemed on the business day preceding the
transfer of funds. For further information or to subscribe to EasyInvest,
shareholders should contact their DWR or other selected broker-dealer account
executive or the Transfer Agent.

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

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

     The Transfer Agent acts as agent for the shareholder in tendering to the
Fund for redemption sufficient full and fractional shares to provide the amount
of the periodic withdrawal payment designated in the application. The shares
will be redeemed at their net asset value determined, at the shareholder's
option, on the tenth or twenty-fifth day (or next following business day) of
the relevant month or quarter and normally a check for the proceeds will be
mailed by the Transfer Agent, or amounts credited to a shareholder's DWR
brokerage account, within five business days after the date of redemption. The
Withdrawal Plan may be terminated at any time by the Fund.

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

     Any shareholder who wishes to have payments under the Withdrawal Plan made
to a third party or sent to an address other than the one listed on the account
must send complete written instructions to the Transfer Agent to enroll in the
Withdrawal Plan. The shareholder's signature on such instructions must be
guaranteed by an eligible guarantor acceptable to the Transfer Agent
(shareholders should contact the Transfer Agent for a determination as to
whether a particular institution is such an eligible guarantor). A shareholder
may, at any time, change the amount and interval of withdrawal payments through
his or her Morgan Stanley Dean Witter Financial Advisor or other selected
broker-dealer representative or by written notification to the Transfer Agent.
In addition, the party and/or the address to which checks are mailed may be
changed by written notification to the Transfer Agent, with signature
guarantees required in the manner described above. The shareholder may also
terminate the Withdrawal Plan at any time by written notice to the Transfer
Agent. In the event of such termination, the account will be continued as a
regular shareholder investment account. The shareholder may also


                                       28
<PAGE>

redeem all or part of the shares held in the Withdrawal Plan account (see
"Redemptions and Repurchases" in the Prospectus) at any time. Shareholders
wishing to enroll in the Withdrawal Plan should contact their account executive
or the Transfer Agent.

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


EXCHANGE PRIVILEGE

     As discussed in the Prospectus, the Fund makes available to its
shareholders an Exchange Privilege whereby shareholders of each Class of shares
of the Fund may exchange their shares for shares of the same Class of shares of
any other Morgan Stanley Dean Witter Multi-Class Fund without the imposition of
any exchange fee. Shares may also be exchanged for share of any of the
following funds: 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 foregoing nine funds are hereinafter referred to as 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 will be treated for federal income tax
purposes the same as a repurchase or redemption of shares, on which the
shareholder may realize a capital gain or loss.

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

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

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


                                       29
<PAGE>

Exchange Fund pursuant to this exchange privilege may exchange those shares
back into a Morgan Stanley Dean Witter Multi-Class Fund or Global Short-Term
from the Exchange Fund, with no CDSC being imposed on such exchange. The
holding period previously frozen when shares were first exchanged for shares of
the Exchange Fund resumes on the last day of the month in which shares of a
Morgan Stanley Dean Witter Multi-Class Fund or Global Short-Term are
reacquired. A CDSC is imposed only upon an ultimate redemption, based upon the
time (calculated as described above) the shareholder was invested in a Morgan
Stanley Dean Witter Multi-Class Fund or in Global Short-Term. In the case of
exchanges of Class A shares which are subject to a CDSC, the holding period
also includes the time (calculated as described above) the shareholder was
invested in a FSC Fund.

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

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

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


                                       30
<PAGE>

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

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

     For further information regarding the Exchange Privilege, shareholders
should contact their Morgan Stanley Dean Witter Financial Advisor or other
selected broker-dealer representative or the Transfer Agent.

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

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

     Whether certificates are held by the shareholder or shares are held in a
shareholder's account, if the proceeds are to be paid to any person other than
the record owner, or if the proceeds are to be paid to


                                       31
<PAGE>

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

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

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

     Transfers of Shares. In the event a shareholder requests a transfer of any
shares to a new registration, such shares will be transferred without sales
charge at the time of transfer. With regard to the status of shares which are
either subject to the CDSC or free of such charge (and with regard to the
length of time shares subject to the charge have been held), any transfer
involving less than all of the shares in an account will be made on a pro rata
basis (that is, by transferring shares in the same proportion that the
transferred shares bear to the total shares in the account immediately prior to
the transfer). The transferred shares will continue to be subject to any
applicable CDSC as if they had not been so transferred.

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

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


                                       32
<PAGE>

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

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

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

     Gains or losses on sales of securities by the Fund will be long-term
capital gains or losses if the securities have a tax holding period of more
than twelve months. Gains or losses on the sale of securities with a tax
holding period of twelve months or less will be short-term capital gains or
losses. The Treasury Department intends to issue regulations to permit
shareholders to take into account their proportionate share of the Fund's
capital gains distributions that will be subject to a reduced rate under the
Taxpayer Relief Act of 1997. The Taxpayer Relief Act reduced the maximum tax on
long-term capital gains from 28% to 20%; however, it also lengthened the
required holding period to obtain this lower rate from more than 12 months to
more than 18 months. These lower rates do not apply to collectibles and certain
other assets. Additionally, the maximum capital gain rate for assets that are
held more than 5 years and that are acquired after December 31, 2000 is 18%.

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


                                       33
<PAGE>

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

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

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

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

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


     For periods of less than one year, the Fund quotes its total return on a
non-annualized basis. Accordingly, the Fund may compute its aggregate total
return for each Class for specified periods by determining the aggregate
percentage rate which will result in the ending value of a hypothetical $1,000
investment made at the beginning of the period. For the purpose of this
calculation, it is assumed that all dividends and distributions are reinvested.
The formula for computing aggregate total return involves a percentage obtained
by dividing the ending value by the initial $1,000 investment and subtracting 1
from the result. The ending redeemable value is reduced by any CDSC at the end
of the period.


     In addition to the foregoing, the Fund may advertise its total return for
each Class over different periods of time by means of aggregate, average,
year-by-year or other types of total return figures. Such calculations may or
may not reflect the imposition of the maximum front-end sales charge for Class
A or the deduction of the CDSC for each of Class B and Class C which, if
reflected, would reduce the performance quotes. For example, the total return
of the Fund may be calculated in the manner described above, but without
deduction of any applicable sales charge.


     The Fund may also advertise the growth of hypothetical investments of
$10,000, $50,000 and $100,000 in each Class of shares of the Fund by adding 1
to the Fund's aggregate total return to date (expressed as a decimal and
without taking into account the effect of any applicable CDSC) and


                                       34
<PAGE>

multiplying by $9,475, $48,000 and $97,000 in the case of Class A (investments
of $10,000, $50,000 and $100,000 adjusted for the initial sales charge) or by
$10,000, $50,000 and $100,000 in the case of each of Class B, Class C and Class
D, as the case may be.


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

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

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


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

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

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

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

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

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

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


                                       35
<PAGE>

INDEPENDENT ACCOUNTANTS

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

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

     The Fund will send to shareholders, at least semi-annually, reports
showing the Fund's portfolio and other information. An annual report,
containing financial statements audited by independent account- ants, will be
sent to shareholders each year.
   
     The Fund's fiscal year ends on the last day of February. The financial
statements of the Fund must be audited at least once a year by independent
accountants whose selection is made annually by the Fund's Board of Trustees.
    

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

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

EXPERTS
- --------------------------------------------------------------------------------

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

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

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


                                       36
<PAGE>

MORGAN STANLEY DEAN WITTER S&P 500 SELECT FUND
STATEMENT OF ASSETS AND LIABILITIES AT JULY 22, 1998
- --------------------------------------------------------------------------------


<TABLE>
<S>                                                                  <C>
ASSETS:
 Cash ............................................................     $ 100,000
 Deferred offering costs (Note 1) ................................       143,000
 Receivable from affiliate (Note 1) ..............................        17,000
                                                                       ---------
   Total Assets ..................................................       260,000
                                                                       ---------
LIABILITIES:
 Offering costs payable (Note 1) .................................       143,000
 Organizational expenses payable (Note 1) ........................        17,000
 Commitments (Notes 1 and 2) .....................................           -0-
                                                                       ---------
   Total Liabilities .............................................       160,000
                                                                       ---------
   Net Assets ....................................................     $ 100,000
                                                                       =========
CLASS A SHARES:
Net Assets .......................................................     $  25,000
Shares Outstanding (unlimited authorized, $.01 par value).........         2,500
  NET ASSET VALUE PER SHARE ......................................     $   10.00
                                                                       =========
  MAXIMUM OFFERING PRICE PER SHARE
   (net asset value plus 5.5% of net asset value) ................     $   10.55
                                                                       =========
CLASS B SHARES:
Net Assets .......................................................     $  25,000
Shares Outstanding (unlimited authorized, $.01 par value).........         2,500
  NET ASSET VALUE PER SHARE ......................................     $   10.00
                                                                       =========
CLASS C SHARES:
Net Assets .......................................................     $  25,000
Shares Outstanding (unlimited authorized, $.01 par value).........         2,500
  NET ASSET VALUE PER SHARE ......................................     $   10.00
                                                                       =========
CLASS D SHARES:
Net Assets .......................................................     $  25,000
Shares Outstanding (unlimited authorized, $.01 par value).........         2,500
  NET ASSET VALUE PER SHARE ......................................     $   10.00

STATEMENT OF OPERATIONS
FOR THE PERIOD JUNE 8, 1998 THROUGH JULY 22, 1998

EXPENSES:
Organizational Expenses ..........................................     $  17,000
Less: amounts reimbursed by Investment Manager ...................       (17,000)
                                                                       ---------
   NET EXPENSES AND NET RESULTS FROM OPERATIONS ..................     $      --
                                                                       =========
</TABLE>

- ----------
     NOTE 1--Morgan Stanley Dean Witter S&P 500 Select Fund (the "Fund") was
organized as a Massachusetts business trust on June 8, 1998. To date the Fund
has had no transactions other than those relating to organizational matters and
the sale of 2,500 shares of beneficial interest for $25,000 of each class to
Morgan Stanley Dean Witter Advisors Inc. (the "Investment Manager"). The Fund
is registered under the Investment Company Act of 1940, as amended (the "Act"),
as a diversified, open-end management investment company. The investment
objective of the Fund is to provide a total return (before expenses) which
exceeds the total return of the Standard & Poor's 500 Composite Stock Price
Index. Estimated organizational expenses of the Fund in the amount of
appoximately $17,000 incurred prior to the offering of the Fund's shares will
be reimbursed by the Investment Manager. It is currently estimated that the
Investment Manager will incur, and be reimbursed, approximately $143,000 by the
Fund in offering costs. Actual costs could differ from these estimates.
Offering costs will be deferred and amortized by the Fund on the straight-line
method over the period of benefit of approximately one year or less from the
date of commencement of the Fund's operations.


                                       37
<PAGE>

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

     As full compensation for the services and facilities furnished to the Fund
and expenses of the Fund incurred by the Investment Manager, the Fund will pay
the Investment Manager monthly compensation calculated daily by applying the
annual rate of 0.60% to the Fund's daily net assets.

     The Investment Manager has undertaken to assume all Fund expenses (except
for the 12b-1 fee and brokerage fees) and to waive the compensation provided
for in its investment management agreement for services rendered until such
time as the Fund has $50 million of net assets or until six months from the
date of commencement of the Fund's operations, whichever occurs first.

     Shares of the Fund will be distributed by Morgan Stanley Dean Witter
Distributors Inc. (the "Distributor"), an affiliate of the Investment Manager,
during the initial and continuous offering of the Fund's shares. The Fund has
adopted a Plan of Distribution pursuant to Rule 12b-1 under the Act (the
"Plan") with respect to the distribution of Class A, Class B and Class C shares
of the Fund. The Plan provides that the Distributor will bear the expense of
all promotional and distribution related activities on behalf of those shares,
including the payment of commissions for sales of such shares and incentive
compensation to and expenses of 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, with respect to Class B, the Distributor may utilize fees paid
pursuant to the Plan to compensate Dean Witter Reynolds Inc., an affiliate of
the Investment Manager and Distributor, 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 distribution expenses
incurred.

     To compensate the Distributor for the services provided and for the
expenses borne by the Distributor and others under the Plan, Class A, Class B
and Class C will pay the Distributor compensation accrued daily and payable
monthly at the annual rate of up to 0.25% of the average daily net assets of
Class A; 1.0% of the average daily net assets of Class B; and up to 1% of the
average daily net assets of Class C. In the case of Class B Shares, provided
that the Plan continues in effect, any cumulative expenses incurred by the
Distributor but not yet recovered may be recovered through the payment of
future distribution fees from the Fund pursuant to the Plan and contingent
deferred sales charges paid by investors upon redemption of Class B shares.
Although there is no legal obligation for the Fund to pay expenses incurred in
excess of payments made to the Distributor under the Plan and the proceeds of
contingent deferred sales charges paid by investors upon redemption of shares,
if for any reason the Plan is terminated, the Trustees will consider at that
time the manner in which to treat such expenses. In the case of Class A shares
and Class C shares, expenses incurred pursuant to the Plan in any calendar year
in excess of 0.25% or 1.00% of the average daily net assets of Class A or Class
C, respectively, will not be reimbursed by the Fund through payments in any
subsequent year, except that expenses representing a gross sales credit to
account executives may be reimbursed in the subsequent calendar year.

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


                                       38
<PAGE>

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

To the Shareholder and Trustees of

Morgan Stanley Dean Witter S&P 500 Select Fund


In our opinion the accompanying statement of assets and liabilities and the
related statement of operations presents fairly, in all material respects, the
financial position of Morgan Stanley Dean Witter S&P 500 Select Fund (hereafter
referred to as the "Fund") at July 22, 1998, and the results of its operations
for the period June 8, 1998 through July 22, 1998 in conformity with generally
accepted accounting principles. These financial statements are the
responsibility of the Fund's management; our responsibility is to express an
opinion on these financial statements based on our audit. We conducted our
audit of these financial statements in accordance with generally accepted
auditing standards which require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of
material misstatement. An audit includes examining, on a test basis, evidence
supporting the amounts and disclosures in the financial statements, assessing
the accounting principles used and significant estimates made by management,
and evaluating the overall financial statement presentation. We believe that
our audit provides a reasonable basis for the opinion expressed above.





PricewaterhouseCoopers LLP
1177 Avenue of the Americas
New York, New York 10036
July 23, 1998

                                       39




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