http://bugs.winehq.org/show_bug.cgi?id=20834
--- Comment #3 from Jeffrey Pfau archaemic.spam@gmail.com 2010-01-29 22:39:42 --- After looking at the actual configuration file stored in the Profile directory, I see that the mouse buttons I mention in the previous comment are in fact joypad buttons.
Upon editing the profile settings (the .ini), it seems to have much difficulty either parsing this file, or translating the parsed version into the engine.