i upgrade my pc to vista because halo 2 would not run on xp and to become up to date . halo 2 be graphically the same a 1 imo . same character same feel nothing new and in fact i swear they use the same map but i could be wrong . the flood be back and the bubble head booby be back ( ohh the pain the pain ) . the annoy screen just to get to play single player and i mean who care if i cant upload my progress and i just want to play . i play about half an hour a night before i get bore . it seem that they have port to pc just to rake in the profit and no thought to current day graphic and try it out first before you spend your money . this may be the first fps i have start that i may not finish . sorry to all halo fan but . this one be garbage .