Supplement to the Currently Effective Statement of Additional Information

DWS RREEF Global Real Estate Securities Fund

All references in the Fund's statement of additional  information (the "SAI") to
"Deutsche Asset Management  International  GmbH" as a sub-subadvisor to the Fund
and all  references  to a  "sub-sub-subadvisor"  to the Fund are deleted and the
three paragraphs in the subsection entitled  "Sub-subadvisors" under the section
of the SAI entitled "Management of the Fund--Investment Advisor" are replaced in
their entirety by the following:

Pursuant to investment  sub-advisory  agreements  between RREEF and RREEF Global
Advisers  Limited,  Deutsche Asset  Management  (Hong Kong) Limited and Deutsche
Investments  Australia  Limited (the  "sub-subadvisors"),  these entities act as
sub-subadvisors  to the fund.  The  sub-subadvisors  are indirect,  wholly owned
subsidiaries of Deutsche Bank AG. As  sub-subadvisors,  under the supervision of
the Board of Trustees,  DIMA and RREEF,  the  sub-subadvisors  manage the fund's
investments in specific foreign markets. RREEF allocates, and re-allocates as it
deems appropriate, the fund's assets among the sub-subadvisors.

RREEF Global Advisers  Limited,  Winchester  House, 1 Great  Winchester  Street,
London,  United Kingdom,  EC2N 2DB,  manages stock  selection  decisions for the
European portion of the fund's portfolio.  Deutsche Asset Management (Hong Kong)
Limited,  55/F Cheung Kong Centre, 2 Queen's Road Central, Hong Kong, China, and
Deutsche Investments  Australia Limited,  Level 21, 83 Clarence Street,  Sydney,
Australia,  NSW, 2000,  manage the stock  selection  decisions for the Asian and
Australian portions of the fund's portfolio, respectively.



All  references  in the  Fund's  SAI to a  "sub-sub-subadvisor"  to the Fund are
deleted  and any  sentences  with the  phrase  "or  sub-sub-subadvisor"  or "and
sub-sub-subadvisor" are to be read as if such phrase was deleted.





               Please Retain This Supplement for Future Reference







October 31, 2007



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                                                                         SCUDDER
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