http://bugs.winehq.org/show_bug.cgi?id=23443
--- Comment #3 from alex ashalimov@gmail.com 2010-06-30 10:21:27 --- I'm not sure how to find it out. Changing fonts in the Desktop Integration/Appearance/Items doesn't seems to affect the one used by Wine in message boxes. Could you please tell me how to find it out? Right now I only can say that I'm using stock fonts + winetricks corefonts & tahoma.