http://bugs.winehq.org/show_bug.cgi?id=25747
--- Comment #7 from Henri Verbeet hverbeet@gmail.com 2012-02-16 06:58:02 CST --- Matteo looked into this, and found an issue with fglrx, although it's not entirely clear if it's an actual bug or not. (See http://ati.cchtml.com/show_bug.cgi?id=426.) Unfortunately previous experience makes it somewhat unlikely that that bug report will get a reply. Your best option is probably to give the r600g driver a try, the game is supposed to work there, although performance isn't quite optimal.