http://bugs.winehq.org/show_bug.cgi?id=11321
--- Comment #7 from Pigeon pigeon768@hotmail.com 2008-09-16 03:25:34 --- this is a hellgate bug, not a wine bug.
create language.dat (and region.dat) in $hellgate_folder/Data
language.dat should read: "Language=English" (no quote, no return line, no carriage return) region.dat should read: "Region=NorthAmerica" (no quotes, no return line, no carriage return)
more info: http://forums.hellgatelondon.com/showthread.php?t=61219
also try searching on the forums for the term language.dat - should come up with a few hundred hits.