OMG. I have ATI and want to play Quake3/4 on my VISTA machine. MS has some buggy, slow openGL driver since I could play Quake3 after VISTA installation, but performance was like driving Ferrari with 1,6 L machine. And sometimes gfx messed up while playing. I really hope ATI is taking some actiong regarding this matter. At least tell when OpenGL support is implemented.