Oh my gaaaaawd. It seems the PC version doesn't have any lighting or shadowing whatsoever, making it look worse than on the PS2, a black and white TV set and a ZX Spectrum combined. For the ultimate in horrors go here:
http://www.gamespot.com/pc/adventure...062&pid=931851
Anybody supporting such incredibly lazy, cheapass ports by actually forking out cash and stuffing it down company's throats should be shot. Right here. Right now.