I read a lot of messages concerning combinations similar to this, and I have updated the video driver to the NVidia v12.41, and the VIA 4-in-1 driver to v4.32, and I also installed the AGP 4x registry patch. All is well, almost....... I tried running 3DMark 2000, and bad-evil things happened. The first demo only ran for about 15 seconds and then locked. I tried re-booting, and even re-installing 3DMark. Same results every time..... So then I decided to try and find some sort of diagnostic tool and I ran across the AGP Check program that someone had a link to. When I run AGP Check, it says its running @ 4x, but it also says that AGP sideband is not enabled. I can't find anything even close to being called AGP sideband in the configuration options for the NVidia driver. First off, could this be causing the problem? and if not, is there a signifigant enough performance gain from enaibling this feature? Where do I go from here????