http://www.tweakguides.com/NVFORCE_1.html Plenty of info for nVidia users in this guide, good basic stuff.
Omg, how can you write so much about drivers ? I don't want to read it through (so loooooong), tell me, is there anything really important that matter and everyone doesn't know?
sorry macatak, my mystake, you're right, this tweak guide is new, the guy also write a ati tweaking guide, i think it was another one http://3dgpu.com/archives/2004/08/09/geforce-6800-tweak-guide/#more-134 the new one is better, a lot to read...