I did put the install-on-demand scripts by fabianX for 3d drivers of Ati and Nvidia cards on the Technomancer builds of overclockix. They're in /usr/local/bin, but I'm pretty sure the scripts were made before the newest ati dfrivers were released. There are also cheatocdes but I'm not sure that they force a 3d-capable driver or not.

Haven't tried it personally, as I still game in windows on 2 other computers at my house that are more suited to it (9700pro, 8500).

I'll be trying to make some improvements soon and a new build, so maybe I'll work on editing fabianX's ATI script to get the newer driver. I certainly have machines that could be good test subjects.. I've just got a lot of other projects right now and may take me a couple of weeks to get to it.