http://bugs.winehq.org/show_bug.cgi?id=7585
--- Comment #31 from Alexander Dorofeyev alexd4@inbox.lv 2008-04-30 15:38:29 --- (In reply to comment #30)
Perhaps the readtex stuff is not related then?
Readtex is simply broken in these games. Actually seems to be broken in Geforce6100 as well! I filed bug for that:
http://bugs.winehq.org/show_bug.cgi?id=12890
It appears to do nothing at all, which may be why it doesn't hang for you, or it could be that opengl call sequences that happen in readdraw but don't happen in readtex mode cause the hang, I don't know.