I'm trying out Windows 7 on an older computer with an unsupported graphics card. It turns out win7 (build 7077) still supports older 2K/XP (!) drivers, in this case Catalyst 6.11 for my Radeon 9200. It will fail when installing the package, but after that you can do a manual driver update and pick the location (navigate to the 2KXP_INF folder). I did some research online, and all source claimed there was nothing that could be done. This method improves "Standard VGA driver" with 16MB memory to the attached image; I can also change my refresh rate now. It of course won't support AERO but it's definitely an improvement.