(RIVERSOURCE INVESTMENTS LOGO)

                    PROSPECTUS SUPPLEMENT -- AUGUST 14, 2008*

RIVERSOURCE GLOBAL TECHNOLOGY FUND -- (12/28/07)                     S-6395-99 M

The following change was effective July 1, 2008:

RIVERSOURCE GLOBAL TECHNOLOGY FUND will measure its performance against the
following Lipper index for purposes of determining the performance incentive
adjustment:



EXISTING INDEX                                                  INDEX EFFECTIVE JULY 1, 2008
                                                             
Lipper Science and Technology Funds Index                       Lipper Global Science and Technology Funds Index(a)



(a) The Lipper Global Science and Technology Funds Index will be used for
    purposes of determining performance incentive adjustment. The performance
    will be compared to a 12 month blended index return that reflects the
    performance of the Lipper Global Science and Technology Funds Index (current
    index) for the portion of the 12 month performance measurement period
    beginning with the effective date of the current index and the performance
    of the Lipper Science and Technology Funds Index (prior index) for the
    remainder of the measurement period. At the conclusion of the transition
    period, the performance of the prior index will be eliminated from the
    performance incentive adjustment calculation, and the calculation will
    include only the performance of the current index.

The Lipper Science and Technology Funds Index includes the 30 largest science
and technology funds tracked by Lipper Inc. The index returns include net
reinvested dividends.

The Lipper Global Science and Technology Funds Index includes the 10 largest
global science and technology funds tracked by Lipper Inc. The index returns
include net reinvested dividends.

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S-6395-3 A (8/08)
* Valid until next update.