I have a 160 gig hard drive and want to add another drive for games ect.I`m not sure how to go about this(I mean i do know how to install it ect.)but how do i make it so i can go from one hd to the other...and do they both have to have the same windows on them? I have a 3.2 intell processor with 4 giggs of ram and a nvidia 8800 gts vid card..thanks