http://bugs.winehq.org/show_bug.cgi?id=13189
--- Comment #8 from Andrej andrej.sinicyn@gmx.de 2009-02-11 14:03:33 --- Indeed - CMD in XP uses the set codepage and replaces chars not in codepage to ?. So current behavoiur simulates perfectly Windows.
The codepage handling should be changed.
All the Wine console output should be converted the the set codepage, so with de_de.UTF8 codepage 850 should be set for example and the German chars should be displayed correctly.