I'm not sure if it has already been mentioned here, but the latest NVidia driver (7167) and 2.6.11-0.3.rdt.rhfc3.ccrma on FC3 appear to work together. I just ran the normal NVidia installer without needing to tweak anything and it worked straight away. Now all I need to do is find out how to tweak it, because it's very blurry around the outside edges of my flatpanel.