I realy don't know why so much users of this card have trouble with the driver???:(
I did buy this card including the 8.1 driver on the driver cd, it did work without any problem.
....later did uninstal all drivers and try instal the Hotfix driver 11-03-2008 from the site...
I run more than 10000 point with a HD3850 AGP!!!. all done with the Asrock Conroe865PE motherboard. Also the same result if run in agp 4x mode....who say AGP is Past Time??