i got this free wit my video card and after i installed it i wouldnt run, i said "please insert the original disc not a backup" well a quick visit to my favorite no cd patch website fixed this. I find the game to be fun but a little tedious because it take so many bullet to kill some of the enemies but fun so far

But the cd glitch was the only glitch i have experienced so far.
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AMD Athlon X2 6000+ @ 3.3ghz
2gb Crucial Ballistix DDR2800
Biotstar T-force T560 A2+ (with Noctua NC-U6)
Evga 8800gts SSC (112sp) 640mb
2 x 50gb Quantum 10k SCSI (+ 100gb, 40gb ide)
CoolerMaster Extreme Power Duo 600w
Wrapped in a CoolerMaster CM690 with 7x120mm