i dont know if any of this is relevant but here it is:
dimension 9600
2.4 ghz p4
768 ram
ati sapphire radeon 4600 256 mb vram
i divided my 80gb drive in to 2 40 gb parts. installed xp and all
drivers ect.
mounted windows 7 beta 7000 in daemon tools in xp and installed into seperate part
got all drivers workin
booted xp and installed doom 3 and played awhile... worked fine
booted windows 7
went into xp drive where doom 3 installed.
ran from that directory without even installing it in windows 7
all done from original PURCHASED oem game also
works fine no problems
make sure disk is in the drive
BUY THE GAME