I am having a similar problem to Kickaha. I loaded prophecy and it plays fine but the video and sound is so choppy that you cannot understand it. I am running XP home on a Pent IV 2 GH with:
256 MB DDR SDRAM @266MHz
16 MB ATI Rage Ultra 4x AGP, Graphics Card
SB Live 1024 Digital Sound Card
256 MB DDR SDRAM @266MHz
16 MB ATI Rage Ultra 4x AGP, Graphics Card
SB Live 1024 Digital Sound Card