October 1, 1998
DREYFUS INDEX FUNDS, INC.
DREYFUS INTERNATIONAL STOCK INDEX FUND
Supplement to Statement of Additional Information Dated March 12, 1998
The following information supplements and should be read in
conjunction with the section of the Statement of Additional Information
entitled "Determination of Net Asset Value-Valuation of Portfolio
Securities."
The Fund currently is pricing its Malaysian currency-denominated
securities based on their closing prices on the Malaysian stock exchange,
with the Malaysian currency value of such securities translated into United
States dollars at a thirty-percent discount to the official exchange rate.
