FOR INTERNAL USE ONLY

     QUESTIONS AND ANSWERS ABOUT PROPOSED CHANGES TO PIONEER INDO-ASIA FUND

A supplement to the prospectus for Pioneer Indo-Asia Fund dated June 1, 2001 was
mailed  to  shareholders  of the  Fund  on  June  8,  2001.  The  supplement  is
accompanied  by a cover  letter  from  Theresa  Hamacher.  A Dealer  Advisory is
mailing as well.

- --------------------------------------------------------------------------------
Here are the major points covered in the shareholder communications:

THE FUND TRUSTEES APPROVED A TAX-FREE REORGANIZATION (SOMETIMES REFERRED TO AS A
"MERGER") OF THE FUND INTO  PIONEER  EMERGING  MARKETS FUND PENDING  APPROVAL OF
INDO-ASIA FUND SHAREHOLDERS LATER THIS SUMMER.

THE FUND WILL CLOSE TO NEW INVESTORS ON JUNE 29, 2001.

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

Q:    What is a tax-free reorganization?

A:    If  approved  by the  shareowners  of  Pioneer  Indo-Asia  Fund later this
      summer,  the assets of the fund would transfer to Pioneer Emerging Markets
      Fund and  shareowners  of Pioneer  Indo-Asia  Fund would have their assets
      converted into Pioneer Emerging Markets Fund shares.  This is treated as a
      non-taxable event.

Q:    How will shareowners give  their  approval  to  this reorganization?  When
      would it become effective?

A:    A proxy  statement/prospectus  will be mailed to  shareowners in July. The
      shareowner   meeting  is  scheduled  for  mid-September   2001,  with  the
      reorganization expected after the close of business on September 28, 2001.

Q:    What are  the  differences in the investment policies of Pioneer Indo-Asia
      Fund and Pioneer Emerging Markets Fund?

A:    Pioneer Emerging Markets Fund takes a multi-regional approach to investing
      in emerging  markets,  whereas Pioneer Indo-Asia Fund has a regional focus
      within  Asia/Pacific   ex-Japan.   However,  the  team  employs  the  same
      investment  strategy in researching and managing these funds. Please refer
      to the table below for comparisons between the two funds. You will receive
      the proxy  statement/prospectus  later this summer, which contains greater
      detail on investment policies and other issues.





      The  investment  objectives  and policies of  Indo-Asia  Fund and Emerging
      Markets Fund are generally similar, as shown in the following table.



    ------------------------------------------------------- -----------------------------------------------------
                    PIONEER INDO-ASIA FUND                             PIONEER EMERGING MARKETS FUND
    ------------------------------------------------------- -----------------------------------------------------
    ------------------------------------------------------- -----------------------------------------------------
                                                         
    Long-term growth of capital                             Long-term growth of capital
    ------------------------------------------------------- -----------------------------------------------------
    ------------------------------------------------------- -----------------------------------------------------

    Under normal circumstances, the fund invests at least   Under normal circumstances, the fund invests at
    65% of its total assets in equity securities of         least 65% of its total assets in both equity and
    Indo-Asian issuers. The fund's investments will         debt securities of emerging market issuers. The
    include securities of issuers in Australia and New      fund normally emphasizes equity securities in its
    Zealand but will exclude securities of issuers in       portfolio.
    Japan.
                                                            An emerging markets issuer:
    An Indo-Asian issuer:
                                                            is organized under the laws of an emerging market
    is organized under the laws of a country in Asia or     country;
    the Indian Subcontinent;
                                                            has a principal office in an emerging market
    derives at least 50% of its revenues from business      country; or
    transacted, or has at least 50% of its assets, in
    Asia or the Indian Subcontinent; or                     derives at least 50% of its gross revenues or
                                                            profits from goods or services produced in emerging
    has equity securities that trade principally on a       markets or sales made in emerging markets.
    stock exchange (including an over-the-counter market)
    in Asia or the Indian Subcontinent.                     The fund invests in at least six emerging markets.
                                                            The fund does not allocate more than 25% of its
                                                            total assets (at the time of purchase) to any one
                                                            country but can invest more than 25% of its total
                                                            assets in a particular region.
    ------------------------------------------------------- -----------------------------------------------------
    ------------------------------------------------------- -----------------------------------------------------

    The fund may invest up to 35% of its total assets (at   The fund may invest up to 35% of its total assets
    the time of purchase) in equity securities of           (at the time of purchase) in equity and debt
    companies located outside of Asia and the Indian        securities of corporate or government issuers in
    Subcontinent.                                           any developed country (other than the U.S.) and
                                                            short-term debt securities for cash management
                                                            purposes.
    ------------------------------------------------------- -----------------------------------------------------
    ------------------------------------------------------- -----------------------------------------------------

    The fund may invest up to 25% of its total assets (at   The fund may also invest in Brady bonds and debt
    the time of purchase) in debt securities of corporate   securities of any quality or maturity. The fund may
    and government issuers.                                 not invest more than 10% of its net assets in debt
                                                            securities rated below investment grade or in
                                                            unrated securities of comparable quality.
    ------------------------------------------------------- -----------------------------------------------------


    The fund may  invest  up to 25% of its  total  assets   The fund may also invest in Brady bonds and debt
    (at the time of purchase) in debt  securities  of       securities of any quality or maturity. The fund may
    corporate and government issuers.                       not invest more than 10% of its net assets in debt
                                                            securities rated below investment grade or in
                                                            unrated securities of comparable quality.
    ------------------------------------------------------- -----------------------------------------------------






Q:    Are  the  expenses  for Pioneer Emerging Markets Fund different than those
      for Pioneer Indo-Asia Fund?

A:    Pioneer Emerging Markets Fund has a management fee of 1.25% versus Pioneer
      Indo-Asia Fund's 1.10%.  While Pioneer Emerging Markets Fund's  management
      fees are higher,  the investment team conducts a larger research effort in
      analyzing and managing these  investments.  Additionally,  please refer to
      the  table  below  or  the   prospectus   supplement   for  expense  ratio
      comparisons.



    FUND EXPENSE RATIOS

    -------------------------------------------------------- ------------------------------------------
    NAME OF FUND                                             EXPENSE RATIO

    -------------------------------------------------------- ------------------------------------------
    -------------------------------------------------------- -------------- ------------- -------------
                                                             Class A        Class B       Class C
    -------------------------------------------------------- -------------- ------------- -------------
    -------------------------------------------------------- -------------- ------------- -------------
                                                                                 
    Indo-Asia Fund (gross expenses)                          2.61%*         3.41%*        3.39%*
    -------------------------------------------------------- -------------- ------------- -------------
    -------------------------------------------------------- -------------- ------------- -------------
    Indo-Asia Fund (net of expense limitation)               2.10%*         2.95%*        2.89%*
    -------------------------------------------------------- -------------- ------------- -------------
    -------------------------------------------------------- -------------- ------------- -------------
    Emerging Markets Fund                                    2.19%          3.05%         2.85%
    -------------------------------------------------------- -------------- ------------- -------------


    *Pioneer has agreed not to impose during  Indo-Asia  Fund's  current  fiscal
     year all or a portion of its  management  fee and, if  necessary,  to limit
     other ordinary  operating  expense to the extent required to reduce Class A
     expenses to 2.10% of the daily net assets  attributable  to Class A shares.
     The portion of the expenses attributable to Class B and Class C shares will
     be reduced only to the extent such expenses are reduced for Class A shares.
     Pioneer may amend or eliminate this expense limitation agreement at the end
     of any fiscal year.

Q:    If I own  Class B shares in  Pioneer  Indo-Asia  Fund  will my  contingent
      deferred sales charge (CDSC) schedule remain the same for Pioneer Emerging
      Markets Fund?

A:    Yes,  Pioneer  Emerging Markets Fund has the same CDSC schedule as Pioneer
      Indo-Asia  Fund.  Please refer to the Pioneer  Emerging  Markets Fund CDSC
      schedule within the table below.

    CDSC SCHEDULE

    --------------------------- ------------------------------------
    ON SHARES SOLD BEFORE THE                             AS A % OF
    END OF YEAR                            DOLLAR AMOUNT SUBJECT TO
                                                   THE SALES CHARGE

    --------------------------- ------------------------------------
    --------------------------- ------------------------------------
    1                                                             4
    --------------------------- ------------------------------------
    --------------------------- ------------------------------------
    2                                                             4
    --------------------------- ------------------------------------
    --------------------------- ------------------------------------
    3                                                             3
    --------------------------- ------------------------------------
    --------------------------- ------------------------------------
    4                                                             3
    --------------------------- ------------------------------------
    --------------------------- ------------------------------------
    5                                                             2
    --------------------------- ------------------------------------
    --------------------------- ------------------------------------
    6                                                             1
    --------------------------- ------------------------------------
    --------------------------- ------------------------------------
    7+                                                          -0-
    --------------------------- ------------------------------------





Q:    Do I need to take any action now?

A:    No -  shareowners  are not being asked to do anything  with regards to the
      proposed  reorganization  at this time.  You will be  receiving a proxy in
      July and we would ask that you vote your  proxy  when you  receive it as a
      timely  response  will save your fund the need to do  additional  mailings
      throughout  the  summer.  We do  encourage  investors  to talk with  their
      investment  professional  if you have  questions.  If you wish to exchange
      your Pioneer  Indo-Asia  Fund account to another  Pioneer fund, you may do
      this at any time.  Please keep in mind that  exchanges for  non-retirement
      accounts  will have tax  implications.  Again,  talk with your  investment
      professional before making your decision.

(C)   Pioneer Funds Distributor, Inc.
      Underwriter of Pioneer Mutual Funds
      60 State Street
      Boston, MA  02109