I've just installed Ubuntu 8.04 on my old D800 and am really pleased,
but I just haven't had much sucess with the Nvidia driver. The Ubuntu
supplied one is working like a charm, but obviously doesn't support
everything.

I am pretty much a complete noob when it comes to configuring X and
installing Linux drivers. I know enough to make it worry me.

Anyway, I would like to try some of the apps that require the
functionality in the Nvidia driver. I've tried the 96.43.07 driver
and it was a huge hassel to get the resolution right, and once that
was set (1920x1200) the performance was horrible. It worked a bit
better at 1280x928 (I think that's what I tried) but of course that's
not the native resolution, and the video player wouldn't work
full-screen anymore - it crashed silently.

Can anyone supply some guidance? I've rolled back to the Ubuntu
supplied driver so I'm at least back where I started from...