Vista Home Premium SP3
When exactly does the BSOD appear? You shouldn't see any if you boot from the XP CD and format the drive; install the new OS that way. Do you have an OEM disk or a manufacturer disk that came with another computer? Is there any specific reason you want to do away with Vista, or do you just not like it? You could always give Windows 7 a shot as well. There are still RC downloads available.