Build or Buy

Thanks for the replies! So I understand then that buying components with my $600 is a better way to go. I did look through the Tom's Hardware site, tons of stuff in there on montherboards and video cards!

For me, thought, its too much information, that is, too many choices. Could someone suggest to me a couple of specific choices that would be good components for me to bring my CPU (Intel 3.0 Ghz P4) and memory over? The CPU is a ZIF socket, meaning I could, after removing the heatsink and raising the bracket arm, just lift the CPU off the motherboard. I'm not overly 'crazy' about gaming, or else I'd have to up my budget. I like the army shooter games, which won't play on my current computer, like Call Of Duty 2.. But I figure I have to buy a CPU, and probably a case since I expect my Dell case to be proprietary (but I really don't know for sure), and of course a video card. (I don't need dual monitors.)

So if someone has suggestions for at least those three components, i.e. Mfg and model, I'll shop the local Fry's Electronics for it or CompUSA is local to me too. Thanks! -Terry