Running Mepis-64, need 32-bit OpenGL

Just switched from Mepis-32 to Mepis-64 with my new CPU, and everything's working impressively well, except Cedega. I fail the OpenGL Direct Rendering test. I did a little Googling, and I found a page saying that Cedega on a 64-bit distro needs 32-bit OpenGL installed, and that it should be possible for 64-bit and 32-bit OpenGL versions to co-exist. I can't figure out how to make Mepis do this, though. Can anybody help get this gamer back on his 64-bit feet?