http://bugs.winehq.org/show_bug.cgi?id=31730
--- Comment #13 from Adam Bolte boltronics@gmail.com 2013-05-07 09:34:12 CDT --- Thanks AJ - you nailed it. Using the modified .reg file attached, along with __GL_ExtensionStringVersion=17700, the game appears to work perfectly in v1.5.29.
Although I'm not the original reporter, I'd be happy to see this bug closed. Cheers.