MORGAN STANLEY DEAN WITTER S&P 500 SELECT FUND
497, 1999-07-02
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<PAGE>
                                               Filed Pursuant to Rule 497(c)
                                               Registration File No.: 333-56609



                                                   PROSPECTUS - JUNE 28, 1999

Morgan Stanley Dean Witter

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

                                                            S&P 500 SELECT FUND


















                              A MUTUAL FUND THAT SEEKS 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 Securities and Exchange Commission has not approved or disapproved these
securities or passed upon the adequacy of this Prospectus. Any representation to
                      the contrary is a criminal offense.
<PAGE>

CONTENTS

The Fund                  Investment Objective................................1

                          Principal Investment Strategies.....................1

                          Principal Risks.....................................2

                          Past Performance....................................2

                          Fees and Expenses...................................3

                          Additional Investment Strategy Information..........4

                          Additional Risk Information.........................5

                          Fund Management.....................................6


Shareholder Information   Pricing Fund Shares.................................7

                          How to Buy Shares...................................7

                          How to Exchange Shares..............................9

                          How to Sell Shares.................................11

                          Distributions......................................12

                          Tax Consequences...................................13

                          Share Class Arrangements...........................13

Financial Highlights      ...................................................21

Our Family of Funds       ................................... Inside Back Cover

                          This Prospectus contains important information about
                          the Fund. Please read it carefully and keep it for
                          future reference.
<PAGE>

THE FUND


[GRAPHIC OMITTED]

             INVESTMENT OBJECTIVE
- ---------------------------------
Morgan Stanley Dean Witter S&P 500 Select Fund seeks to provide a total return
(before expenses) that exceeds the total return of the Standard & Poor's
(Registered Trademark)  500 Composite Stock Price Index.


[GRAPHIC OMITTED]

             PRINCIPAL INVESTMENT STRATEGIES
- --------------------------------------------
The Fund will normally invest at least 80% of its total assets in common stocks
of selected companies included in the Standard & Poor's (Registered Trademark)
500 Composite Stock Price Index. The S&P 500 is a well known stock market index
that includes common stocks of 500 companies. The companies represent a
significant portion of the market value of all publicly traded common stocks in
the United States. The S&P 500 may include some foreign companies. Unlike the
S&P 500, however, the Fund is actively managed by its "Investment Manager,"
Morgan Stanley Dean Witter Advisors Inc. As such, the Fund's performance will
differ from the performance of the S&P 500.

(side bar)
TOTAL RETURN
An investment objective having the goal of selecting securities with the
potential to rise in price and pay out income.
(end side bar)


In buying and selling securities for the Fund, the Investment Manager seeks to
identify those companies listed in the S&P 500 that have favorable investment
recommendations from the equity research departments of recognized investment
banking firms, including Morgan Stanley Dean Witter & Co. The Investment
Manager will consider the available analytical research reports and investment
recommendations concerning each of the companies included in the S&P 500,
together with its own investment analysis, to select or overweight favorable
companies. The Investment Manager will consider investing in all of the
industries represented in the S&P 500; but may not do so if the companies
within an industry do not meet its investment criteria. The Fund will not
purchase shares of Morgan Stanley Dean Witter & Co.

Common stock is a share ownership or equity interest in a corporation. It may
or may not pay dividends, as some companies reinvest all of their profits back
into their businesses, while others pay out some of their profits to
shareholders as dividends.

In addition, the Fund may invest in stock index futures on the S&P 500 and
Standard & Poor's Depository Receipts ("SPDRs").

In pursuing the Fund's investment objective, the Investment Manager has
considerable leeway in deciding which investments it buys, holds or sells on a
day-to-day basis -- and which trading or investment strategies it uses. For
example, the Investment Manager in its discretion may determine to use some
permitted trading or investment strategies while not using others.

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

"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. and Standard & Poor's
makes no representation regarding the advisability of investing in the Fund.


<PAGE>

[GRAPHIC OMITTED]

             PRINCIPAL RISKS
- ----------------------------
There is no assurance that the Fund will achieve its investment objective. The
Fund's share price will fluctuate with changes in the market value of the
Fund's portfolio securities. When you sell Fund shares, they may be worth less
than what you paid for them and, accordingly, you can lose money investing in
this Fund.

A principal risk of investing in the Fund is associated with its common stock
investments. In general, stock values fluctuate in response to activities
specific to the company as well as general market, economic and political
conditions. Stock prices can fluctuate widely in response to these factors.

The performance of the Fund also will depend on whether the Investment Manager
is successful in pursuing the Fund's investment strategy. The Fund is also
subject to other risks from its permissible investments including the risks
associated with its futures, SPDRs and foreign securities investments. For more
information about these risks, see the "Additional Risk Information" section.

Shares of the Fund are not bank deposits and are not guaranteed or insured by
the FDIC or any other government agency.


[GRAPHIC OMITTED]

             PAST PERFORMANCE
- -----------------------------
The table below provides some indication of the risks of investing in the Fund.
The Fund's past performance does not indicate how the Fund will perform in the
future.

(side bar)
TOTAL RETURNS
This table compares the Fund's returns with those of a broad measure of market
performance over time. The Fund's returns include the maximum applicable sales
charge for each Class and assume you sold your shares at the end of each
period.
(end side bar)


     TOTAL RETURNS (AS OF DECEMBER 31, 1998)
- ----------------------------------------------------------------
                                                LIFE OF FUND
                                               (SINCE 9/28/98)
- ----------------------------------------------------------------
 Class A                                           11.53%
- ----------------------------------------------------------------
 Class B                                           12.46%
- ----------------------------------------------------------------
 Class C                                           16.44%
- ----------------------------------------------------------------
 Class D                                           17.78%
- ----------------------------------------------------------------
 S&P 500 Index(1)                                    17.63%
- ----------------------------------------------------------------

1 The Standard & Poor's (Registered Trademark)  500 Composite Stock Price Index
  is a broad-based index, the performance of which is based on the average
  performance of 500 widely held common stocks. The performance of the Index
  does not include any expenses, fees or charges. The Index is unmanaged and
  should not be considered an investment.


<PAGE>

[GRAPHIC OMITTED]

             FEES AND EXPENSES
- ------------------------------
The table below briefly describes the fees and expenses that you may pay if you
buy and hold shares of the Fund. The Fund offers four classes of shares:
Classes A, B, C and D. Each Class has a different combination of fees, expenses
and other features. The Fund does not charge account or exchange fees. See the
"Share Class Arrangements" section for further fee and expense information.

(side bar)
SHAREHOLDER FEES
These fees are paid directly from your investment.
(end sidebar)

(sidebar)
ANNUAL FUND OPERATING EXPENSES
These expenses are deducted from the Fund's assets and are estimated based on
expenses paid for the period September 28, 1998 (commencement of operations)
through February 28, 1999.
(end side bar)

<TABLE>
<CAPTION>

                                                       CLASS A        CLASS B        CLASS C       CLASS D
- --------------------------------------------------------------------------------------------------------------
<S>                                                 <C>            <C>            <C>            <C>
- --------------------------------------------------------------------------------------------------------------
SHAREHOLDER FEES
- --------------------------------------------------------------------------------------------------------------
 Maximum sales charge (load) imposed on
 purchases (as a percentage of offering price)         5.25% (1)        None           None            None
- --------------------------------------------------------------------------------------------------------------
 Maximum deferred sales charge (load) (as a
 percentage based on the lesser of the offering        None (2)         5.00% (3)      1.00% (4)       None
 price or net asset value at redemption)
- --------------------------------------------------------------------------------------------------------------
 ANNUAL FUND OPERATING EXPENSES
- --------------------------------------------------------------------------------------------------------------
 Management fee                                        0.60%            0.60%           0.60%          0.60%
- --------------------------------------------------------------------------------------------------------------
 Distribution and service (12b-1) fees                 0.25%            1.00%           1.00%          None
- --------------------------------------------------------------------------------------------------------------
 Other expenses                                        0.32%            0.32%           0.32%          0.32%
- --------------------------------------------------------------------------------------------------------------
 Total annual Fund operating expenses                  1.17%            1.92%           1.92%          0.92%
- --------------------------------------------------------------------------------------------------------------
</TABLE>

1  Reduced for purchases of $25,000 and over.

2  Investments that are not subject to any sales charge at the time of purchase
   are subject to a contingent deferred sales charge ("CDSC") of 1.00% that will
   be imposed if you sell your shares within one year after purchase, except for
   certain specific circumstances.

3 The CDSC is scaled down to 1.00% during the sixth year, reaching zero
  thereafter. See "Share Class Arrangements" for a complete discussion of the
  CDSC.

4 Only applicable if you sell your shares within one year after purchase.

<PAGE>

EXAMPLE

This example is intended to help you compare the cost of investing in the Fund
with the cost of investing in other mutual funds.

The example assumes that you invest $10,000 in the Fund, your investment has a
5% return each year, and the Fund's operating expenses remain the same.
Although your actual costs may be higher or lower, the tables below show your
costs at the end of each period based on these assumptions depending upon
whether or not you sell your shares at the end of each period.


            IF YOU SOLD YOUR SHARES:       IF YOU HELD YOUR SHARES:
- ------------------------------------    --------------------------------
             1 Year     3 Years             1 Year     3 Years
- ------------------------------------    --------------------------------
 CLASS A     $638       $878                $638       $878
- ------------------------------------    --------------------------------
 CLASS B     $695       $904                $195       $604
- ------------------------------------    --------------------------------
 CLASS C     $295       $604                $195       $604
- ------------------------------------    --------------------------------
 CLASS D     $ 94       $294                $ 94       $294
- ------------------------------------    --------------------------------

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 National Association of Securities
Dealers.

[GRAPHIC OMITTED]

             ADDITIONAL INVESTMENT STRATEGY INFORMATION
- -------------------------------------------------------
This section provides additional information relating to the Fund's principal
strategies.

STOCK INDEX FUTURES. The Fund may invest in stock index futures with respect to
the S&P 500 Index. Stock index futures may be used to simulate investment in
the S&P 500 while retaining a cash balance for fund management purposes, to
facilitate trading, to reduce transaction costs or to seek higher investment
returns.

SPDRS. The Fund may invest in securities referred to as SPDRs (known as
"spiders") that are designed to track the S&P 500 Index. SPDRs represent an
ownership interest in the SPDR Trust, which holds a portfolio of common stocks
that closely tracks the price performance and dividend yield of the S&P 500
Index. SPDRs trade on the American Stock Exchange like shares of common stock.
The Fund may invest up to 10% of its assets in SPDRs and up to 5% of its assets
in SPDRs issued by a single unit investment trust.

DEFENSIVE INVESTING. The Fund may take temporary "defensive" positions in
attempting to respond to adverse market conditions. The Fund may invest any
amount of its total assets in cash or money market instruments in a defensive
posture when the Investment Manager believes it is advisable to do so. Although
taking a defensive posture is designed to protect the Fund from an anticipated
market downturn, it could have the effect of reducing the benefit from any
upswing in the market.

The percentage limitations relating to the composition of the Fund's portfolio
apply at the time the Fund acquires an investment and refer to the Fund's net
assets, unless otherwise noted. Subsequent percentage changes that result from
market fluctuations will not require the Fund to sell any portfolio security.
The Fund may change its principal investment strategies without shareholder
approval; however, you would be notified of any changes.

4
<PAGE>

[GRAPHIC OMITTED]

             ADDITIONAL RISK INFORMATION
- ----------------------------------------
This section provides additional information relating to the principal risks of
investing in the Fund.

FOREIGN SECURITIES. The Fund's investments in foreign securities (including
depository receipts) may involve risks in addition to the risks associated with
domestic securities. One additional risk is currency risk. In particular, the
price of securities could be adversely affected by changes in the exchange rate
between the U.S. dollar and a foreign market's local currency.

Foreign securities also have risks related to economic and political
developments abroad, including any effects of foreign social, economic or
political instability. Foreign companies, in general, are not subject to the
regulatory requirements of U.S. companies and, as such, there may be less
publicly available information about these companies. Moreover, foreign
accounting, auditing and financial reporting standards generally are different
from those applicable to U.S. companies.

FUTURES. If the Fund invests in futures, its participation in these markets
would subject the Fund's portfolio to certain risks. The Investment Manager's
predictions of movements in the direction of the stock market may be
inaccurate, and the adverse consequences to the Fund (e.g., a reduction in the
Fund's net asset value or a reduction in the amount of income available for
distribution) may leave the Fund in a worse position than if these strategies
were not used. Other risks inherent in the use of futures include, for example,
the possible imperfect correlation between the price of futures contracts and
movements in the prices of the securities, and the possible absence of a liquid
secondary market for any particular instrument.

SPDRS. SPDRs, which the Fund may hold, have many of the same risks as direct
investments in common stocks. The market value of SPDRs is expected to rise and
fall as the S&P 500 Index rises and falls. If the Fund invests in SPDRs, it
would, in addition to its own expenses, indirectly bear its ratable share of
the SPDR's expenses.

YEAR 2000. The Fund could be adversely affected if the computer systems
necessary for the efficient operation of the Investment Manager, the Fund's
other service providers and the markets and corporate and governmental issuers
in which the Fund invests do not properly process and calculate date-related
information from and after January 1, 2000. While year 2000-related computer
problems could have a negative effect on the Fund, the Investment Manager and
its affiliates are working hard to avoid any problems and to obtain assurances
from their service providers that they are taking similar steps.

In addition, it is possible that the markets for securities in which the Fund
invests may be detrimentally affected by the 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 issues 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.


                                                                               5
<PAGE>

[GRAPHIC OMITTED]

             FUND MANAGEMENT
- ----------------------------

The Fund has retained the Investment Manager -- Morgan Stanley Dean Witter
Advisors Inc. -- to provide administrative services, manage its business
affairs and invest its assets, including the placing of orders for the purchase
and sale of portfolio securities. 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. Its main
business office is located at Two World Trade Center, New York, New York 10048.

(side bar)
MORGAN STANLEY DEAN WITTER ADVISORS INC.
The Investment Manager is widely recognized as a leader in the mutual fund
industry and together with Morgan Stanley Dean Witter Services Company Inc.,
its wholly-owned subsidiary, has more than $134.2 billion in assets under
management or administration as of May 31, 1999.
(end side bar)

The Fund's portfolio is managed within the Investment Manager's Growth Group.
Guy G. Rutherfurd, Jr., a Senior Vice President of the Investment Manager, is
the primary portfolio manager of the Fund. Mr. Rutherfurd has been a portfolio
manager with the Investment Manager since February, 1997. During the period
from May, 1992 to February, 1997, Mr. Rutherfurd was the Executive Vice
President and Chief Investment Officer of Nomura Asset Management (U.S.A.) Inc.
Mr. Rutherfurd is assisted by Kevin Jung, Vice President of the Investment
Manager. Mr. Jung has been a portfolio manager with the Investment Manager
since September 1997, prior to which time he was a Vice President and portfolio
manager with UBS Asset Management (NY) Inc. from April 1993 through August
1997.

The Fund pays the Investment Manager a monthly management fee as full
compensation for the services and facilities furnished to the Fund, and for
Fund expenses assumed by the Investment Manager. The fee is calculated by
applying the annual rate of 0.60% to the Fund's average daily net assets.


6
<PAGE>

SHAREHOLDER INFORMATION


[GRAPHIC OMITTED]

             PRICING FUND SHARES
- --------------------------------
The price of Fund shares (excluding sales charges), called "net asset value,"
is based on the value of the Fund's portfolio securities. The net asset value
of each Class, however, will differ because the Classes have different ongoing
distribution fees.

The net asset value per share of the Fund is determined once daily at 4:00 p.m.
Eastern 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). Shares will not be priced on days that the New York Stock Exchange is
closed.

The value of the Fund's portfolio securities is based on the securities' market
price when available. When a market price is not readily available, including
circumstances under which the Investment Manager determines that a security's
market price is not accurate, a portfolio security is valued at its fair value,
as determined under procedures established by the Fund's Board of Trustees. In
these cases, the Fund's net asset value will reflect certain portfolio
securities' fair value rather than their market price. In addition, if the Fund
holds securities primarily listed on foreign exchanges, the value of the Fund's
portfolio securities may change on days when you will not be able to purchase
or sell your shares.

An exception to the Fund's general policy of using market prices concerns its
short-term debt portfolio securities. Debt securities with remaining maturities
of sixty days or less at the time of purchase are valued at amortized cost.
However, if the cost does not reflect the securities' market value, these
securities will be valued at their fair value.

[GRAPHIC OMITTED]

             HOW TO BUY SHARES
- ------------------------------

You may open a new account to buy Fund shares or buy additional Fund shares for
an existing account by contacting your Morgan Stanley Dean Witter Financial
Advisor or other authorized financial representative. Your Financial Advisor
will assist you, step-by-step, with the procedures to invest in the Fund. You
may also purchase shares directly by calling the Fund's transfer agent and
requesting an application.

(side bar)
CONTACTING A FINANCIAL ADVISOR
If you are new to the Morgan Stanley Dean Witter Family of Funds and would like
to contact a Financial Advisor, call (800) THE-DEAN for the telephone number of
the Morgan Stanley Dean Witter office nearest you. You may also access our
office locator on our Internet site at: www.deanwitter.com/funds
(end side bar)

Because every investor has different immediate financial needs and long-term
investment goals, the Fund offers investors four Classes of shares: Classes A,
B, C and D. Class D shares are only offered to a limited group of investors.
Each Class of shares offers a distinct structure of sales charges, distribution
and service fees, and other features that are designed to address a variety of
needs. Your Financial Advisor or other authorized financial representative can
help you decide which Class may be most appropriate for you. When purchasing
Fund shares, you must specify which Class of shares you wish to purchase.

When you buy Fund shares, the shares are purchased at the next share price
calculated, less any applicable front-end sales charge, after we receive your
purchase order. Your payment is due on the third business day after you place
your purchase order. We reserve the right to reject any order for the purchase
of Fund shares.


                                                                               7
<PAGE>

<TABLE>
<CAPTION>

     MINIMUM INVESTMENT AMOUNTS
- --------------------------------------------------------------------------------------------------
                                                                         MINIMUM INVESTMENT
                                                                        -----------------------
INVESTMENT OPTIONS                                                      INITIAL      ADDITIONAL
- --------------------------------------------------------------------------------------------------
<S>                                 <C>                               <C>           <C>
 Regular Accounts                                                     $1,000          $100
- --------------------------------------------------------------------------------------------------
 Individual Retirement Accounts     Regular IRAs                      $1,000          $100
                                    Education IRAs                    $  500          $100
- --------------------------------------------------------------------------------------------------
 EasyInvest(SM)                       (Automatically from your
                                    checking or savings account or
                                    Money Market Fund)                $  100*          $100*
- --------------------------------------------------------------------------------------------------
</TABLE>

* Provided your schedule of investments totals $1,000 in twelve months.

(side bar)
EASYINVEST(SM)
A purchase plan that allows you to transfer money automatically from your
checking or savings account or from a Money Market Fund on a semi-monthly,
monthly or quarterly basis. Contact your Morgan Stanley Dean Witter Financial
Advisor for further information about this service.
(end side bar)

There is no minimum investment amount if you purchase Fund shares through: (1)
the Investment Manager's mutual fund asset allocation plan, (2) a program,
approved by the Fund's distributor, in which you pay an asset-based fee for
advisory, administrative and/or brokerage services, or (3) employer-sponsored
employee benefit plan accounts.

INVESTMENT OPTIONS FOR CERTAIN INSTITUTIONAL AND OTHER INVESTORS/CLASS D
SHARES.
To be eligible to purchase Class D shares, you must qualify under one of the
investor categories specified in the "Share Class Arrangements" section of this
Prospectus.

SUBSEQUENT INVESTMENTS SENT DIRECTLY TO THE FUND. In addition to buying
additional Fund shares for an existing account by contacting your Morgan
Stanley Dean Witter Financial Advisor, you may send a check directly to the
Fund. To buy additional shares in this manner:

o Write a "letter of instruction" to the Fund specifying the name(s) on the
  account, the account number, the social security or tax identification
  number, the Class of shares you wish to purchase, and the investment amount
  (which would include any applicable front-end sales charge). The letter must
  be signed by the account owner(s).

o Make out a check for the total amount payable to: Morgan Stanley Dean Witter
  S&P 500 Select Fund.

o Mail the letter and check to Morgan Stanley Dean Witter Trust FSB at P.O. Box
  1040, Jersey City, NJ 07303.


8
<PAGE>

[GRAPHIC OMITTED]

             HOW TO EXCHANGE SHARES
- -----------------------------------
PERMISSIBLE FUND EXCHANGES. You may exchange shares of any Class of the Fund
for the same Class of any other continuously offered Multi-Class Fund, or for
shares of a No-Load Fund, Money Market Fund or Short-Term U.S. Treasury Trust,
without the imposition of an exchange fee or sales charge. See the inside back
cover of this Prospectus for each Morgan Stanley Dean Witter Fund's designation
as a Multi-Class Fund, No-Load Fund or Money Market Fund. If a Morgan Stanley
Dean Witter Fund is not listed, consult the inside back cover of that Fund's
Prospectus for its designation. For purposes of exchanges, shares of FSC Funds
(subject to a front-end sales charge) are treated as Class A shares of a
Multi-Class Fund.

Exchanges may be made after shares of the Fund acquired by purchase have been
held for thirty days. There is no waiting period for exchanges of shares
acquired by exchange or dividend reinvestment. The current Prospectus for each
fund describes its investment objective(s), policies and investment minimums,
and should be read before investment.

EXCHANGE PROCEDURES. You can process an exchange by contacting your Morgan
Stanley Dean Witter Financial Advisor or other authorized financial
representative. Otherwise, you must forward an exchange privilege authorization
form to the Fund's transfer agent -- Morgan Stanley Dean Witter Trust FSB --
and then write the transfer agent or call (800) 869-NEWS to place an exchange
order. You can obtain an exchange privilege authorization form by contacting
your Financial Advisor or other authorized financial representative or by
calling (800) 869-NEWS. If you hold share certificates, no exchanges may be
processed until we have received all applicable share certificates.

An exchange to any Morgan Stanley Dean Witter Fund (except a Money Market Fund)
is made on the basis of the next calculated net asset values of the Funds
involved after the exchange instructions are accepted. When exchanging into a
Money Market Fund, the Fund's shares are sold at their next calculated net
asset value and the Money Market Fund's shares are purchased at their net asset
value on the following business day.

The Fund may terminate or revise the exchange privilege upon required notice.
Certain services normally available to shareholders of Money Market Funds,
including the check writing privilege, are not available for Money Market Fund
shares you acquire in an exchange.

TELEPHONE EXCHANGES. For your protection when calling Morgan Stanley Dean
Witter Trust FSB, we will employ reasonable procedures to confirm that exchange
instructions communicated over the telephone are genuine. These procedures may
include requiring various forms of personal identification such as name,
mailing address, social security or other tax identification number. Telephone
instructions also may be recorded.

Telephone instructions will be accepted if received by the Fund's transfer
agent between 9:00 a.m. and 4:00 p.m. Eastern time, on any day the New York
Stock Exchange is open for business. 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 case with the Fund in
the past.

                                                                               9
<PAGE>

MARGIN ACCOUNTS. If you have pledged your Fund shares in a margin account,
contact your Morgan Stanely Dean Witter Financial Advisor or other authorized
financial representative regarding restrictions on the exchange of such shares.

TAX CONSIDERATIONS OF EXCHANGES. If you exchange shares of the Fund for shares
of another Morgan Stanley Dean Witter Fund there are important tax
considerations. For tax purposes, the exchange out of the Fund is considered a
sale of the Fund's shares -- and the exchange into the other Fund is considered
a purchase. As a result, you may realize a capital gain or loss.

You should review the "Tax Consequences" section and consult your own tax
professional about the tax consequences of an exchange.

FREQUENT EXCHANGES. A pattern of frequent exchanges may result in the Fund
limiting or prohibiting, at its discretion, additional purchases and/or
exchanges. The Fund will notify you in advance of limiting your exchange
privileges.

CDSC CALCULATIONS ON EXCHANGES. See the "Share Class Arrangements" section of
this Prospectus for a discussion of how applicable contingent deferred sales
charges (CDSCs) are calculated for shares of one Morgan Stanley Dean Witter
Fund that are exchanged for shares of another.

For further information regarding exchange privileges, you should contact your
Morgan Stanley Dean Witter Financial Advisor or call (800) 869-NEWS.













10
<PAGE>


[GRAPHIC OMITTED]

             HOW TO SELL SHARES
- -------------------------------
You can sell some or all of your Fund shares at any time. If you sell Class A,
Class B or Class C shares, your net sale proceeds are reduced by the amount of
any applicable CDSC. Your shares will be sold at the next price calculated
after we receive your order to sell as described below.

<TABLE>
<CAPTION>

 OPTIONS             PROCEDURES
- -------------------- -----------------------------------------------------------------------------------
<S>                  <C>

 Contact Your        To sell your shares, simply call your Morgan Stanley Dean Witter Financial
 Financial Advisor   Advisor or other authorized financial representative.
                     -----------------------------------------------------------------------------------

[GRAPHIC OMITTED]    Payment will be sent to the address to which the account is registered or
                     deposited in your brokerage account.
- -------------------- -----------------------------------------------------------------------------------
 By Letter           You can also sell your shares by writing a "letter of instruction" that includes:
                     o your account number;
[GRAPHIC OMITTED]    o the dollar amount or the number of shares
                     o you wish to sell;
                     o the Class of shares you wish to sell; and
                     o the signature of each owner as it appears on the account.
                     -----------------------------------------------------------------------------------
                     If you are requesting payment to anyone other than the registered owner(s) or
                     that payment be sent to any address other than the address of the registered
                     owner(s) or pre-designated bank account, you will need a signature guarantee.
                     You can obtain a signature guarantee from an eligible guarantor acceptable to
                     Morgan Stanley Dean Witter Trust FSB. (You should contact Morgan Stanley
                     Dean Witter Trust FSB at (800) 869-NEWS for a determination as to whether a
                     particular institution is an eligible guarantor.) A notary public cannot provide a
                     signature guarantee. Additional documentation may be required for shares held
                     by a corporation, partnership, trustee or executor.
                     -----------------------------------------------------------------------------------
                     Mail the letter to Morgan Stanley Dean Witter Trust FSB at P.O. Box 983, Jersey
                     City, New Jersey 07303. If you hold share certificates, you must return the
                     certificates, along with the letter and any required additional documentation.
                     -----------------------------------------------------------------------------------
                     A check will be mailed to the name(s) and address in which the account is
                     registered, or otherwise according to your instructions.
- -------------------- -----------------------------------------------------------------------------------
 Systematic          If your investment in all of the Morgan Stanley Dean Witter Family of Funds has
 Withdrawal Plan     a total market value of at least $10,000, you may elect to withdraw amounts of
                     $25 or more, or in any whole percentage of a Fund's balance (provided the
[GRAPHIC OMITTED]    amount is at least $25), on a monthly, quarterly, semi-annual or annual basis,
                     from any Fund with a balance of at least $1,000. Each time you add a Fund to the
                     plan, you must meet the plan requirements.
                     -----------------------------------------------------------------------------------
                     Amounts withdrawn are subject to any applicable CDSC. A CDSC may be
                     waived under certain circumstances. See the Class B waiver categories listed in
                     the "Share Class Arrangements" section of this Prospectus.
                     -----------------------------------------------------------------------------------
                     To sign up for the systematic withdrawal plan, contact your Morgan Stanley
                     Dean Witter Financial Advisor or call (800) 869-NEWS. You may terminate or
                     suspend your plan at any time. Please remember that withdrawals from the plan
                     are sales of shares, not Fund "distributions," and ultimately may exhaust your
                     account balance. The Fund may terminate or revise the plan at any time.
- -------------------- -----------------------------------------------------------------------------------
</TABLE>

PAYMENT FOR SOLD SHARES. After we receive your complete instructions to sell as
described above, a check will be mailed to you within seven days, although we
will attempt to make payment within one business day. Payment may also be sent
to your brokerage account.

Payment may be postponed or the right to sell your shares suspended, however,
under unusual circumstances. If you request to sell shares that were recently
purchased by


                                                                              11
<PAGE>

check, payment of the sale proceeds may be delayed for the minimum time needed
to verify that the check has been honored (not more than fifteen days from the
time we receive the check).

TAX CONSIDERATIONS. Normally, your sale of Fund shares is subject to federal
and state income tax. You should review the "Tax Consequences" section of this
Prospectus and consult your own tax professional about the tax consequences of
a sale.

REINSTATEMENT PRIVILEGE. If you sell Fund shares and have not previously
exercised the reinstatement privilege, you may, within 35 days after the date
of sale, invest any portion of the proceeds in the same Class of Fund shares at
their net asset value and receive a pro rata credit for any CDSC paid in
connection with the sale.

INVOLUNTARY SALES. The Fund reserves the right, on sixty days' notice, to sell
the shares of any shareholder (other than shares held in an IRA or 403(b)
Custodial Account) whose shares, due to sales by the shareholder, have a value
below $100, or in the case of an account opened through EasyInvest(SM), if after
12 months the shareholder has invested less than $1,000 in the account.

However, before the Fund sells your shares in this manner, we will notify you
and allow you sixty days to make an additional investment in an amount that
will increase the value of your account to at least the required amount before
the sale is processed. No CDSC will be imposed on any involuntary sale.

MARGIN ACCOUNTS. If you have pledged your Fund shares in a margin account,
contact your Morgan Stanley Dean Witter Financial Advisor or other authorized
financial representative regarding restrictions on the sale of such shares.

[GRAPHIC OMITTED]

             DISTRIBUTIONS
- --------------------------

The Fund passes substantially all of its earnings from income and capital gains
along to its investors as "distributions." The Fund earns income from stocks
and interest from fixed-income investments. These amounts are passed along to
Fund shareholders as "income dividend distributions." The Fund realizes capital
gains whenever it sells securities for a higher price than it paid for them.
These amounts are passed along as "capital gain distributions."

(side bar)
TARGETED DIVIDENDS(SM)
You may select to have your Fund distributions automatically invested in other
Classes of Fund shares or Classes of another Morgan Stanley Dean Witter Fund
that you own. Contact your Morgan Stanley Dean Witter Financial Advisor for
further information about this service.
(end side bar)

The Fund declares income dividends separately for each Class. Distributions
paid on Class A and Class D shares will be higher than for Class B and Class C
because distribution fees that Class B and Class C pay are higher. Normally,
income dividends and capital gains are distributed at least annually in
December. The Fund, however, may retain and reinvest any long-term capital
gains. The Fund may at times make payments from sources other than income or
capital gains that represent a return of a portion of your investment.

Distributions are reinvested automatically in additional shares of the same
Class and automatically credited to your account, unless you request in writing
that all distributions be paid in cash. If you elect the cash option, the Fund
will mail a check to you no later than seven business days after the
distribution is declared. No interest will accrue on uncashed checks. If you
wish to change how your distributions are paid,


12
<PAGE>

your request should be received by the Fund's transfer agent, Morgan Stanley
Dean Witter Trust FSB, at least five business days prior to the record date of
the distributions.

[GRAPHIC OMITTED]

             TAX CONSEQUENCES
- -----------------------------
As with any investment, you should consider how your Fund investment will be
taxed. The tax information in this Prospectus is provided as general
information. You should consult your own tax professional about the tax
consequences of an investment in the Fund.

Unless your investment in the Fund is through a tax-deferred retirement
account, such as a 401(k) plan or IRA, you need to be aware of the possible tax
consequences when:

o The Fund makes distributions; and

o You sell Fund shares, including an exchange to another Morgan Stanley Dean
  Witter Fund.

TAXES ON DISTRIBUTIONS. Your distributions are normally subject to federal and
state income tax when they are paid, whether you take them in cash or reinvest
them in Fund shares. A distribution also may be subject to local income tax.
Any income dividend distributions and any short-term capital gain distributions
are taxable to you as ordinary income. Any long-term capital gain distributions
are taxable as long-term capital gains, no matter how long you have owned
shares in the Fund.

Every January, you will be sent a statement (IRS Form 1099-DIV) showing the
taxable distributions paid to you in the previous year. The statement provides
full information on your dividends and capital gains for tax purposes.

TAXES ON SALES. Your sale of Fund shares normally is subject to federal and
state income tax and may result in a taxable gain or loss to you. A sale also
may be subject to local income tax. Your exchange of Fund shares for shares of
another Morgan Stanley Dean Witter Fund is treated for tax purposes like a sale
of your original shares and a purchase of your new shares. Thus, the exchange
may, like a sale, result in a taxable gain or loss to you and will give you a
new tax basis for your new shares.

When you open your Fund account, you should provide your Social Security or tax
identification number on your investment application. By providing this
information, you will avoid being subject to a federal backup withholding tax
of 31% on taxable distributions and redemption proceeds. Any withheld amount
would be sent to the IRS as an advance tax payment.

[GRAPHIC OMITTED]

             SHARE CLASS ARRANGEMENTS
- -------------------------------------
The Fund offers several Classes of shares having different distribution
arrangements designed to provide you with different purchase options according
to your investment needs. Your Morgan Stanley Dean Witter Financial Advisor or
other authorized financial representative can help you decide which Class may
be appropriate for you.

The general public is offered three Classes: Class A shares, Class B shares and
Class C shares, which differ principally in terms of sales charges and ongoing
expenses. A fourth Class, Class D shares, is offered only to a limited category
of investors. Shares


                                                                              13
<PAGE>

that you acquire through reinvested distributions will not be subject to any
front-end sales charge or CDSC -- contingent deferred sales charge. Sales
personnel may receive different compensation for selling each Class of shares.
The sales charges applicable to each Class provide for the distribution
financing of shares of that Class.

The chart below compares the sales charge and the maximum annual 12b-1 fees
applicable to each Class:

<TABLE>
<CAPTION>
                                                                                   MAXIMUM
CLASS     SALES CHARGE                                                         ANNUAL 12B-1 FEE
- --------------------------------------------------------------------------------------------------
<S>       <C>                                                                 <C>
  A       Maximum 5.25% initial sales charge reduced for purchase of
          $25,000 or more; shares sold without an initial sales charge are
          generally subject to a 1.0% CDSC during first year.                   0.25%
- --------------------------------------------------------------------------------------------------
  B       Maximum 5.0% CDSC during the first year decreasing to 0%
          after six years.                                                      1.0%
- --------------------------------------------------------------------------------------------------
  C       1.0% CDSC during first year                                           1.0%
- --------------------------------------------------------------------------------------------------
  D       None                                                                  None
- --------------------------------------------------------------------------------------------------
</TABLE>


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 purchases of
$25,000 or more according to the schedule below. Investments of $1 million or
more are not subject to an initial sales charge, but are generally subject to a
contingent deferred sales charge, or CDSC, of 1.0% on sales made within one
year after the last day of the month of purchase. The CDSC will be assessed in
the same manner and with the same CDSC waivers as with Class B shares. Class A
shares are also subject to a distribution (12b-1) fee of up to 0.25% of the
average daily net assets of the Class.

The offering price of Class A shares includes a sales charge (expressed as a
percentage of the offering price) on a single transaction as shown in the
following table:

(side bar)
FRONT-END SALES CHARGE OR FSC
An initial sales charge you pay when purchasing Class A shares that is based on
a percentage of the offering price. The percentage declines based upon the
dollar value of Class A shares you purchase. We offer three ways to reduce your
Class A sales charges -- the Combined Purchase Privilege, Right of Accumulation
and Letter of Intent.
(end side bar)

<TABLE>
<CAPTION>
                                                    FRONT-END SALES CHARGE
                                        -------------------------------------------------
                                            PERCENTAGE OF         APPROXIMATE PERCENTAGE
AMOUNT OF SINGLE TRANSACTION            PUBLIC OFFERING PRICE     OF NET 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>


14
<PAGE>

The reduced sales charge schedule is applicable to purchases of Class A shares
in a single transaction by:

o A single account (including an individual, trust or fiduciary account).

o Family member accounts (limited to husband, wife and children under the age
  of 21).

o Pension, profit sharing or other employee benefit plans of companies and
  their affiliates.

o Tax-exempt organizations.

o Groups organized for a purpose other than to buy mutual fund shares.

COMBINED PURCHASE PRIVILEGE. You also will have the benefit of reduced sales
charges by combining purchases of Class A shares of the Fund in a single
transaction with purchases of Class A shares of other Multi-Class Funds and
shares of FSC Funds.

RIGHT OF ACCUMULATION. You also may benefit from a reduction of sales charges,
if the cumulative net asset value of Class A shares of the Fund purchased in a
single transaction, together with shares of other Funds you currently own which
were previously purchased at a price including a front-end sales charge
(including shares acquired through reinvestment of distributions), amounts to
$25,000 or more. Also, if you have a cumulative net asset value of all your
Class A and Class D shares equal to at least $5 million (or $25 million for
certain employee benefit plans), you are eligible to purchase Class D shares of
any Fund subject to the Fund's minimum initial investment requirement.

You must notify your Morgan Stanley Dean Witter Financial Advisor or other
authorized financial representative, (or Morgan Stanley Dean Witter Trust FSB
if you purchase directly through the Fund) 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 when an order is
placed by mail. The reduced sales charge will not be granted if: (i)
notification is not furnished at the time of the order; or (ii) a review of the
records of Dean Witter Reynolds or other authorized dealer of Fund shares or
the Fund's transfer agent does not confirm your represented holdings.

LETTER OF INTENT. The schedule of reduced sales charges for larger purchases
also will be available to you if you enter into a written "letter of intent." A
letter of intent provides for the purchase of shares within a thirteen-month
period. It is available for purchases of Class A shares of Multi-Class Funds
and/or shares of FSC Funds. The initial purchase under a letter of intent must
be at least 5% of the stated investment goal. To determine the applicable sales
charge reduction, you may also include: (1) the cost of 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 distributor
receiving the letter of intent, and (2) the cost of shares of other Funds you
currently own acquired in exchange for shares of Funds purchased during that
period at a price including a front-end sales charge. You can obtain a letter
of intent by contacting your Morgan Stanley Dean Witter Financial Advisor or
other authorized financial representative, or by calling (800) 869-NEWS. If you
do not


                                                                              15
<PAGE>

achieve the stated investment goal within the thirteen-month period, you are
required to pay the difference between the sales charges otherwise applicable
and sales charges actually paid, which may be deducted from your investment.

OTHER SALES CHARGE WAIVERS. In addition to investments of $1 million or more,
your purchase of Class A shares is not subject to a front-end sales charge (or
a CDSC upon sale) if your account qualifies under one of the following
categories:

o A trust for which Morgan Stanley Dean Witter Trust FSB provides discretionary
  trustee services.

o Persons participating in a fee-based investment program (subject to all of
  its terms and conditions, including mandatory sale or transfer restrictions
  on termination) approved by the Fund's distributor pursuant to which they
  pay an asset based fee for investment advisory, administrative and/or
  brokerage services.

o Employer-sponsored employee benefit plans, whether or not qualified under the
  Internal Revenue Code, for which Morgan Stanley Dean Witter Trust FSB serves
  as trustee or Dean Witter Reynold's Retirement Plan Services serves as
  recordkeeper under a written Recordkeeping Services Agreement ("MSDW
  Eligible Plans") which have at least 200 eligible employees.

o A MSDW Eligible Plan whose Class B shares have converted to Class A shares,
  regardless of the plan's asset size or number of eligible employees.

o A client of a Morgan Stanley Dean Witter Financial Advisor who joined us from
  another investment firm within six months prior to the date of purchase of
  Fund shares, and you used the proceeds from the sale of shares of a
  proprietary mutual fund of that Financial Advisor's previous firm that
  imposed either a front-end or deferred sales charge to purchase Class A
  shares, provided that: (1) you sold the shares not more than 60 days prior
  to purchase, and (2) the sale proceeds were maintained in the interim in
  cash or a money market fund.

o Current or retired Directors/Trustees of the Morgan Stanley Dean Witter
  Funds, such persons' spouses and children under the age of 21, and trust
  accounts for which any of such persons is a beneficiary.

o Current or retired directors, officers and employees of Morgan Stanley Dean
  Witter & Co. and any of its subsidiaries, such persons' spouses and children
  under the age of 21, and trust accounts for which any of such persons is a
  beneficiary.


16
<PAGE>

CLASS B SHARES  Class B shares are offered at net asset value with no initial
sales charge but are subject to a contingent deferred sales charge, or CDSC, as
set forth in the table below. For the purpose of calculating the CDSC, shares
are deemed to have been purchased on the last day of the month during which they
were purchased.

(side bar)
CONTINGENT DEFERRED SALES CHARGE OR CDSC
A fee you pay when you sell shares of certain Morgan Stanley Dean Witter Funds
purchased without an initial sales charge. This fee declines the longer you hold
your shares as set forth in the table.
(end side bar)

<TABLE>
<CAPTION>
YEAR SINCE PURCHASE PAYMENT MADE   CDSC AS A PERCENTAGE 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>

Each time you place an order to sell or exchange shares, shares with no CDSC
will be sold or exchanged first, then shares with the lowest CDSC will be sold
or exchanged next. For any shares subject to a CDSC, the CDSC will be assessed
on an amount equal to the lesser of the current market value or the cost of the
shares being sold.

CDSC WAIVERS. A CDSC, if otherwise applicable, will be waived in the case of:

o Sales of shares held at the time you die or become disabled (within the
  definition in Section 72(m)(7) of the Internal Revenue Code which relates to
  the ability to engage in gainful employment), if the shares are: (i)
  registered either in your name (not a trust) or in the names of you and your
  spouse as joint tenants with right of survivorship; or (ii) held in a
  qualified corporate or self-employed retirement plan, IRA or 403(b)
  Custodial Account, provided in either case that the sale is requested within
  one year of your death or initial determination of disability.

o Sales in connection with the following retirement plan "distributions": (i)
  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 591/2); (ii) distributions
  from an IRA or 403(b) Custodial Account following attainment of age 591/2;
  or (iii) a tax-free return of an excess IRA contribution (a "distribution"
  does not include a direct transfer of IRA, 403(b) Custodial Account or
  retirement plan assets to a successor custodian or trustee).

o Sales of shares held for you as a participant in a MSDW Eligible Plan.

o Sales of shares in connection with the Systematic Withdrawal Plan of up to
  12% annually of the value of each Fund from which plan sales are made. The
  percentage is determined on the date you establish the Systematic Withdrawal
  Plan and based on the next calculated share price. You may have this CDSC
  waiver applied in amounts up to 1% per month, 3% per quarter, 6%
  semi-annually or 12% annually. Shares with no CDSC will be sold first,
  followed by those with the lowest CDSC. As such, the waiver benefit will be
  reduced by the amount of your shares that are not


                                                                              17
<PAGE>

 subject to a CDSC. If you suspend your participation in the plan, you may
 later resume plan payments without requiring a new determination of the
 account value for the 12% CDSC waiver.

All waivers will be granted only following the Distributor receiving
confirmation of your entitlement. If you believe you are eligible for a CDSC
waiver, please contact your Financial Advisor or call (800) 869-NEWS.

DISTRIBUTION FEE. Class B shares are also subject to an annual distribution
(12b-1) fee of 1.0% of the average daily net assets of Class B shares.

CONVERSION FEATURE. After ten (10) years, Class B shares will convert
automatically to Class A shares of the Fund with no initial sales charge. The
ten year period runs 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, from
the last day of the month in which the original Class B shares were purchased;
the shares will convert to Class A shares based on their relative net asset
values in the month following the ten year period. At the same time, an equal
proportion of Class B shares acquired through automatically reinvested
distributions will convert to Class A shares on the same basis. (Class B shares
held before May 1, 1997, however, will convert to Class A shares in May 2007.)

In the case of Class B shares held in a MSDW Eligible Plan, 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 Class B shares of a Morgan Stanley Dean Witter Fund
purchased by that plan.

Currently, the Class B share conversion is not a taxable event; the conversion
feature may be cancelled if it is deemed a taxable event in the future by the
Internal Revenue Service.

If you exchange your Class B shares for shares of a Money Market Fund, No-Load
Fund or Short-Term U.S. Treasury Trust, the holding period for conversion is
frozen as of the last day of the month of the exchange and resumes on the last
day of the month you exchange back into Class B shares.

EXCHANGING SHARES SUBJECT TO A CDSC. There are special considerations when you
exchange Fund shares that are subject to a CDSC. When determining the length of
time you held the shares and the corresponding CDSC rate, any period (starting
at the end of the month) during which you held shares of a fund that does not
charge a CDSC will not be counted. Thus, in effect the "holding period" for
purposes of calculating the CDSC is frozen upon exchanging into a fund that
does not charge a CDSC.

For example, if you held Class B shares of the Fund for one year, exchanged to
Class B of another Morgan Stanley Dean Witter Multi-Class Fund for another
year, then sold your shares, a CDSC rate of 4% would be imposed on the shares
based on a two year holding period -- one year for each Fund. However, if you
had exchanged the shares of the Fund for a Money Market Fund (which does not
charge a CDSC) instead of the Multi-Class Fund, then sold your shares, a CDSC
rate of 5% would be imposed on the shares based on a one year holding period.
The one year in the Money Market Fund would not be counted. Nevertheless, if
shares subject to a CDSC are exchanged for a


18
<PAGE>

fund that does not charge a CDSC, you will receive a credit when you sell the
shares equal to the distribution (12b-1) fees you paid on those shares while in
that Fund up to the amount of any applicable CDSC.

In addition, shares that are exchanged into or from a Morgan Stanley Dean
Witter Fund subject to a higher CDSC rate will be subject to the higher rate,
even if the shares are re-exchanged into a Fund with a lower CDSC rate.

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 sales made within one year after
the last day of the month of purchase. The CDSC will be assessed in the same
manner and with the same CDSC waivers as with Class B shares.

DISTRIBUTION FEE. Class C shares are subject to an annual distribution (12b-1)
fee of 1.0% of the average daily net assets of that Class. 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. Unlike Class B shares, Class C shares
have no conversion feature and, accordingly, an investor that purchases Class C
shares may be subject to distribution (12b-1) fees applicable to Class C shares
for an indefinite period.

CLASS D SHARES  Class D shares are offered without any sales charge on purchases
or sales and without any distribution (12b-1) fee. Class D shares are offered
only to investors meeting an initial investment minimum of $5 million ($25
million for MSDW Eligible Plans) and the following categories of investors:

o Investors participating in the Investment Manager's mutual fund asset
  allocation program (subject to all of its terms and conditions, including
  mandatory sale or transfer restrictions on termination) pursuant to which
  they pay an asset-based fee.

o Persons participating in a fee-based investment program (subject to all of
  its terms and conditions, including mandatory sale or transfer restrictions
  on termination) approved by the Fund's distributor pursuant to which they
  pay an asset based fee for investment advisory, administrative and/or
  brokerage services.

o Employee benefit plans maintained by Morgan Stanley Dean Witter & Co. or any
  of its subsidiaries for the benefit of certain employees of Morgan Stanley
  Dean Witter & Co. and its subsidiaries.

o Certain unit investment trusts sponsored by Dean Witter Reynolds.

o Certain other open-end investment companies whose shares are distributed by
  the Fund's distributor.

o Investors who were shareholders of the Dean Witter Retirement Series on
  September 11, 1998 for additional purchases for their former Dean Witter
  Retirement Series accounts.

MEETING CLASS D ELIGIBILITY MINIMUMS. To meet the $5 million ($25 million for
MSDW Eligible Plans) initial investment to qualify to purchase Class D shares
you may combine: (1) purchases in a single transaction of Class D shares of the
Fund and other Morgan Stanley Dean Witter Multi-Class Funds and/or (2) previous
purchases of Class


                                                                              19
<PAGE>

A and Class D shares of Multi-Class Funds and shares of FSC Funds you currently
own, along with shares of Morgan Stanley Dean Witter Funds you currently own
that you acquired in exchange for those shares.

NO SALES CHARGES FOR REINVESTED CASH DISTRIBUTIONS. If you receive a cash
payment representing an income dividend or capital gain and you reinvest that
amount in the applicable Class of shares by returning the check within 30 days
of the payment date, the purchased shares would not be subject to an initial
sales charge or CDSC.

PLAN OF DISTRIBUTION (RULE 12B-1 FEES)  The Fund has adopted a Plan of
Distribution in accordance with Rule 12b-1 under the Investment Company Act of
1940 with respect to the distribution of Class A, Class B and Class C shares.
The Plan allows the Fund to pay distribution fees for the sale and distribution
of these shares. It also allows the Fund to pay for services to shareholders of
Class A, Class B and Class C shares. Because these fees are paid out of the
Fund's assets on an ongoing basis, over time these fees will increase the cost
of your investment in these Classes and may cost you more than paying other
types of sales charges.


20
<PAGE>

FINANCIAL HIGHLIGHTS

The financial highlights table is intended to help you understand the Fund's
financial performance for the period September 28, 1998 (commencement of
operations) through February 28, 1999. Certain information reflects financial
results for a single Fund share. The total returns in the table represent the
rate an investor would have earned or lost on an investment in the Fund
(assuming reinvestment of all dividends and distributions).

This information has been audited by PricewaterhouseCoopers LLP, whose report,
along with the Fund's financial statements, is included in the annual report,
which is available upon request.

<TABLE>
<CAPTION>

 CLASS B SHARES
- --------------------------------------------------------------------------------
                                              FOR THE PERIOD SEPTEMBER 28, 1998*
                                                 THROUGH FEBRUARY 28, 1999**
<S>                                                      <C>
- --------------------------------------------------------------------------------
 SELECTED PER SHARE DATA
 Net asset value, beginning of period                     $10.00
- --------------------------------------------------------------------------------
 Income from investment operations:
  Net investment income (loss)                             (0.02)
  Net realized and unrealized gain                          1.80
                                                          -------
 Total income from investment operations                    1.78
- --------------------------------------------------------------------------------
 Less dividends and distributions from:
  Net investment income                                       --++
  Net realized gains                                       (0.02)
                                                          -------
 Total dividends and distributions                         (0.02)
- --------------------------------------------------------------------------------
 Net asset value, end of period                           $11.76
- --------------------------------------------------------------------------------
 TOTAL RETURN+(1)                                          17.96%
- --------------------------------------------------------------------------------
 RATIOS TO AVERAGE NET ASSETS(2)(3)(4)
- --------------------------------------------------------------------------------
 Expenses                                                   1.98%
- --------------------------------------------------------------------------------
 Net investment income                                     (0.37)%
- --------------------------------------------------------------------------------
 SUPPLEMENTAL DATA
- --------------------------------------------------------------------------------
 Net assets, end of period, in thousands                 $83,021
- --------------------------------------------------------------------------------
 Portfolio turnover rate (1)                                  3%
- --------------------------------------------------------------------------------
</TABLE>

*     Commencement of operations.

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

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

++    Excludes $0.002484 and $0.000859 of dividends from net investment income
      for Class B and Class C, respectively.

(1)   Not annualized.

(2)   Annualized.

(3)   If the Fund had borne all of its expenses that were reimbursed or waived
      by the Investment Manager, the annualized expense and the net investment
      income ratios would have been 1.55% and 0.06%, respectively, for Class A
      shares, 2.30% and (0.69)%, respectively, for Class B shares, 2.30% and
      (0.69)%, respectively, for Class C shares and 1.30% and 0.31%,
      respectively, for Class D shares.

(4)   Reflects overall Fund ratios for investment income and non-class specific
      expenses.


                                                                              21
<PAGE>

<TABLE>
<CAPTION>

 CLASS A SHARES
- --------------------------------------------------------------------------------
                                              FOR THE PERIOD SEPTEMBER 28, 1998*
                                                 THROUGH FEBRUARY 28, 1999**
- --------------------------------------------------------------------------------
<S>                                                     <C>
 SELECTED PER SHARE DATA
 Net asset value, beginning of period                   $10.00
- --------------------------------------------------------------------------------
 Income from investment operations:
  Net investment income (loss)                            0.02
  Net realized and unrealized gain                        1.81
                                                        -------
 Total income from investment operations                  1.83
- --------------------------------------------------------------------------------
 Less dividends and distributions from:
  Net investment income                                  (0.02)
  Net realized gains                                     (0.02)
                                                        -------
 Total dividends and distributions                       (0.04)
- --------------------------------------------------------------------------------
 Net asset value, end of period                         $11.79
- --------------------------------------------------------------------------------
 TOTAL RETURN+(1)                                        18.32%
- --------------------------------------------------------------------------------
 RATIOS TO AVERAGE NET ASSETS(2)(3)(4)
- --------------------------------------------------------------------------------
 Expenses                                                 1.23%
- --------------------------------------------------------------------------------
 Net investment income                                    0.38%
- --------------------------------------------------------------------------------
 SUPPLEMENTAL DATA
- --------------------------------------------------------------------------------
 Net assets, end of period, in thousands                $3,269
- --------------------------------------------------------------------------------
 Portfolio turnover rate (1)                                 3%
- --------------------------------------------------------------------------------
</TABLE>

<TABLE>
<CAPTION>

 CLASS C SHARES
- --------------------------------------------------------------------------------
                                              FOR THE PERIOD SEPTEMBER 28, 1998*
                                                 THROUGH FEBRUARY 28, 1999**
- --------------------------------------------------------------------------------
<S>                                                    <C>
 SELECTED PER SHARE DATA
 Net asset value, beginning of period                  $10.00
- --------------------------------------------------------------------------------
 Income from investment operations:
  Net investment income (loss)                          (0.02)
  Net realized and unrealized gain                       1.81
                                                       -------
 Total income from investment operations                 1.79
- --------------------------------------------------------------------------------
 Less dividends and distributions from:
  Net investment income                                   --++
  Net realized gains                                    (0.02)
                                                       -------
 Total dividends and distributions                      (0.02)
- --------------------------------------------------------------------------------
 Net asset value, end of period                        $11.77
- --------------------------------------------------------------------------------
 TOTAL RETURN+(1)                                       17.94%
- --------------------------------------------------------------------------------
 RATIOS TO AVERAGE NET ASSETS(2)(3)(4)
- --------------------------------------------------------------------------------
 Expenses                                                1.98%
- --------------------------------------------------------------------------------
 Net investment income                                  (0.37)%
- --------------------------------------------------------------------------------
 SUPPLEMENTAL DATA
- --------------------------------------------------------------------------------
 Net assets, end of period, in thousands               $6,417
- --------------------------------------------------------------------------------
 Portfolio turnover rate (1)                                3%
- --------------------------------------------------------------------------------
</TABLE>

*     Commencement of operations.
**    The per share amounts were computed using an average number of shares
      outstanding during the period.
+     Does not reflect the deduction of sales charge. Calculated based on the
      net asset value as of the last business day of the period.
++    Excludes $0.002484 and $0.000859 of dividends from net investment income
      for Class B and Class C, respectively.
(1)   Not annualized.
(2)   Annualized.
(3)   If the Fund had borne all of its expenses that were reimbursed or waived
      by the Investment Manager, the annualized expense and the net investment
      income ratios would have been 1.55% and 0.06%, respectively, for Class A
      shares, 2.30% and (0.69)%, respectively, for Class B shares, 2.30% and
      (0.69)%, respectively, for Class C shares and 1.30% and 0.31%,
      respectively, for Class D shares.
(4)   Reflects overall Fund ratios for investment income and non-class specific
      expenses.

22
<PAGE>

<TABLE>
<CAPTION>

 CLASS D SHARES
- --------------------------------------------------------------------------------
                                              FOR THE PERIOD SEPTEMBER 28, 1998*
                                                 THROUGH FEBRUARY 28, 1999**
- --------------------------------------------------------------------------------
<S>                                                     <C>
 SELECTED PER SHARE DATA
 Net asset value, beginning of period                   $10.00
- --------------------------------------------------------------------------------
 Income from investment operations:
  Net investment income (loss)                            0.02
  Net realized and unrealized gain                        1.81
                                                        -------
 Total income from investment operations                  1.83
- --------------------------------------------------------------------------------
 Less dividends and distributions from:
  Net investment income                                  (0.02)
  Net realized gains                                     (0.02)
                                                        -------
 Total dividends and distributions                       (0.04)
- --------------------------------------------------------------------------------
 Net asset value, end of period                         $11.79
- --------------------------------------------------------------------------------
 TOTAL RETURN+(1)                                        18.38%
- --------------------------------------------------------------------------------
 RATIOS TO AVERAGE NET ASSETS(2)(3)(4)
- --------------------------------------------------------------------------------
 Expenses                                                 0.98%
- --------------------------------------------------------------------------------
 Net investment income                                    0.63%
- --------------------------------------------------------------------------------
 SUPPLEMENTAL DATA
- --------------------------------------------------------------------------------
 Net assets, end of period, in thousands                  $203
- --------------------------------------------------------------------------------
 Portfolio turnover rate (1)                                 3%
- --------------------------------------------------------------------------------
</TABLE>

*     Commencement of operations.

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

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

(1)   Not annualized.

(2)   Annualized.

(3)   If the Fund had borne all of its expenses that were reimbursed or waived
      by the Investment Manager, the annualized expense and the net investment
      income ratios would have been 1.55% and 0.06%, respectively, for Class A
      shares, 2.30% and (0.69)%, respectively, for Class B shares, 2.30% and
      (0.69)%, respectively, for Class C shares and 1.30% and 0.31%,
      respectively, for Class D shares.

(4)   Reflects overall Fund ratios for investment income and non-class specific
      expenses.


                                                                              23
<PAGE>

NOTES



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24
<PAGE>
MORGAN STANLEY DEAN WITTER
FAMILY OF FUNDS
                           The Morgan Stanley Dean Witter Family of Funds
                           offers investors a wide range of investment choices.
                           Come on in and meet the family!
<TABLE>
<CAPTION>

- ---------------------------------------------------------------------------------------------------------------------
<S>                      <C>                                     <C>
 GROWTH FUNDS            Aggressive Equity Fund                  Health Sciences Trust

                         American Opportunities Fund             Information Fund

                         Capital Growth Securities               Natural Resource Development Securities

                         Developing Growth Securities            Precious Metals and Minerals Trust

                         Equity Fund                             GLOBAL/INTERNATIONAL FUNDS

                         Growth Fund                             Competitive Edge Fund - "Best Ideas" Portfolio

                         Market Leader Trust                     European Growth Fund

                         Mid-Cap Equity Trust                    Fund of Funds - International Portfolio

                         Small Cap Growth Fund                   International SmallCap Fund

                         Special Value Fund                      Japan Fund

                         Value Fund                              Pacific Growth Fund

                         THEME FUNDS

                         Financial Services Trust

- ---------------------------------------------------------------------------------------------------------------------
 GROWTH & INCOME FUNDS   Balanced Growth Fund                    Strategist Fund

                         Balanced Income Fund                    Total Return Trust

                         Convertible Securities Trust            Value/Added Market Series/Equity Portfolio

                         Dividend Growth Securities              THEME FUNDS

                         Fund of Funds - Domestic Portfolio      Global Utilities Fund

                         Income Builder Fund                     Real Estate Fund

                         Mid-Cap Dividend Growth Securities      Utilities Fund

                         S&P 500 Index Fund                      GLOBAL FUNDS

                         S&P 500 Select Fund                     Global Dividend Growth Securities

- ---------------------------------------------------------------------------------------------------------------------
 INCOME FUNDS            INCOME FUNDS                            GLOBAL INCOME FUNDS

                         Federal Securities Trust                North American Government Income Trust

                         Short-Term U.S. Treasury Trust          World Wide Income Trust

                         U.S. Government Securities Trust        TAX-FREE INCOME FUNDS

                         DIVERSIFIED INCOME FUNDS                California Tax-Free Income Fund

                         Diversified Income Trust                Hawaii Municipal Trust(FSC)

                         CORPORATE INCOME FUNDS                  Limited Term Municipal Trust(NL)

                         High Yield Securities                   Multi-State Municipal Series Trust(FSC)

                         Intermediate Income Securities          New York Tax-Free Income Fund

                         Short-Term Bond Fund(NL)                Tax-Exempt Securities Trust

- ---------------------------------------------------------------------------------------------------------------------
 MONEY MARKET FUNDS      TAXABLE MONEY MARKET FUNDS              TAX-FREE MONEY MARKET FUNDS

                         Liquid Asset Fund(MM)                   California Tax-Free Daily Income Trust(MM)

                         U.S. Government Money Market Trust(MM)  New York Municipal Money Market Trust(MM)

                                                                 Tax-Free Daily Income Trust(MM)

- ---------------------------------------------------------------------------------------------------------------------
</TABLE>

There may be Funds created after this Prospectus was published. Please consult
the inside front cover of a new Fund's prospectus for its designations, e.g.,
Multi-Class Fund or Money Market Fund.

Each listed Morgan Stanley Dean Witter Fund except for North American
Government Income Trust and Short-Term U.S. Treasury Trust, unless
otherwisenoted, is a Multi-Class Fund, which is a mutual fund offering multiple
Classes of shares. The other types of Funds are: NL -- No-Load (Mutual) Fund;
MM -- Money Market Fund; FSC -- A mutual fund sold with a front-end sales
charge and a distribution (12b-1) fee.

<PAGE>

MORGAN STANLEY DEAN WITTER
S&P 500 SELECT FUND

Additional information about the Fund's investments is available in the Fund's
Annual and Semi-Annual Reports to Shareholders. In the Fund's Annual Report,
you will find a discussion of the market conditions and investment strategies
that significantly affected the Fund's performance during its last fiscal year.
The Fund's Statement of Additional Information also provides additional
information about the Fund. The Statement of Additional Information is
incorporated herein by reference (legally is part of this Prospectus). For a
free copy of any of these documents, to request other information about the
Fund, or to make shareholder inquiries, please call:

                                (800) 869-NEWS

(side bar)
TICKER SYMBOL:
 Class B:   SSPBX
(end side bar)

You also may obtain information about the Fund by calling your Morgan Stanley
Dean Witter Financial Advisor or by visiting our Internet site at:

                            www.deanwitter.com/funds

Information about the Fund (including the Statement of Additional Information)
can be viewed and copied at the Securities and Exchange Commission's Public
Reference Room in Washington, DC. Information about the Reference Room's
operations may be obtained by calling the SEC at (800) SEC-0330. Reports and
other information about the Fund are available on the SEC's Internet site
(www.sec.gov), and copies of this information may be obtained, upon payment of
a duplicating fee, by writing the Public Reference Section of the SEC,
Washington, DC 20549-6009.


























(THE FUND'S INVESTMENT COMPANY ACT FILE NO. IS 811-8809)





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