I found SGI's opengl dll that uses pentium and mmx instructions. I ran the two demos that came with it and they ran alot better than simpler stuff using the default windows opengl. I thought i could just place the sgi dll's in place of ms's and then all opengl apps would use it, but it didnt work. I guess they arent compatible. My question is, is there a version of opengl that uses mmx and is compatible with ms's opengl?