http://bugs.winehq.org/show_bug.cgi?id=13753
--- Comment #2 from emkay emkay@gmx.de 2008-06-14 17:15:13 --- fixed it with: Find HKEY_CURRENT_USER\Software\Wine\ Highlight the wine folder in the left hand pane by left clicking on it. The icon should change to an open folder. Click right on the wine folder and select [NEW] then [KEY]. Replace the text "New Key #1" with OpenGL (CaSe Sensitive). Right click in the right hand pane and select [NEW] then [String Value]. Replace "New Value #1" with "DisabledExtensions" (CaSe sensitive). Then double click anywhere on the line, a dialog box will open. In the value field type "GL_ARB_vertex_buffer_object" (without the quotes).
and editing (set gxApi "opengl") to config.wtf. After that start game with wine wow -opengl. only the white texture bug in caves remains.