I've recently bought an MSI Geforce4 440 MX & installed it on a partitioned system with XP Pro & ME & have problems running games on XP.
Unreal Tournament is the only 3D game that will run under XP, all games work great under Windows ME.
I've updated the Bios to the latest version from Asus & have tried several versions of Nvidia drivers - from MSI & Nvidia - none have made any difference to XP.
Games tested: Unreal Tournament, Grand Theft Auto 3, Max Payne, Medal of Honour, etc, etc,,,,
System
PIII 1 Gig.
ASUS CUV3X-E Motherboard - with latest Bios.
512MB PC133 SDRam.
IMB Deskstar 80 Gig 7200 rpm Hard Disk.
(Partitioned: 55 Gig XP / 25 Gig ME).
MSI Geforce4 440MX.
Daytek 17'' Monitor.
I have noticed also that display shows AGP running at 2X instead of 4X even after adding the patches & updates from ASUS.