Current specs: XP service pack 3 .NET Framework 3.5 SP1 Dell Precision 450 Dual Xeon 2.66Ghz 3.00 GB of Ram NVIDIA Quadro FX 1000 Let me begin by saying that Quadro FX 1000 is a great card however it doesn’t support DirectX10. Dell Precision 450 doesn’t have a PCI-e slot so I buy AGP Radeon HD 2600 PRO since it has pretty solid reviews. Remove my old card , insert the new one and the hell begins. The card came with the driver version 6.14. When I installed it and rebooted, the screen would turn off just before the windows login screen. So I would boot in the safe mode. Would run uninstaller, run Driver Cleaner, search for ATI registries and remove the ones the Driver Cleaner missed. Then I would install a newer version of the driver and would get with the same result. I tried these versions : 8.3, 8.49, 8.52 hot fix, 8.53. Nada. Once you are out of safe vga mode, the screen goes black. Some of the installers gave me regpermwriter.exe error. Some gave “Setup did not find a driver compatible with your current hardware” error although they were listed as AGP Radeon 2600 HD PRO drivers. I never was able to boot it once in normal mode , even the first time. I never had any ATI drivers previously installed on my system. So I am back to my Nvidia card. Can anybody help ? Should I give up ? Does anyone knows if there is an AGP Nvidia with DirectX10 support ?