From what I've read over at the connectix forums, it'd be possible, but very hard, and slow. They can't access the video card directly in Mac OS X, so it'd have to somehow bridge Windows OpenGL to Mac OS X OpenGL. They said this could be done in the future, but it'd still be too slow for any games. It'd mostly be useful for people who need to use OpenGL Graphing calculators or other 3d type apps. One of the things holding them back is people who would whine and moan and complain to them when their latest windows game ran slow.