i would build one instead thats what im doing right now i bought most of the stuff and i know a lot of people say its more expensive but the way i look at it, ITS NOT. Lemme explain, first of all if you want to buy it from a store, a pretty good one is gonna cost about $800, but then they are going to charge tax which in my state is 5.5 so it all of a sudden cost $844, then you got to buy a warranty which is $150, so now its $994, and at that price you are mainly only getting 3.2 ghz intel proccesor with 512 ram a dvdrw and a crappy graphics card, so since your a gamer your going to need to buy another one instead so theres another $200, and i dont know about you but on my pc im getting 2 gb ram for smoothness so youll also need to upgrade that aswell if your buying one from a store. So i recommened building one, you can take a look at the one im building its in the system building/overclocking section, and i think its going to be really good and especially for that price. Thanks to Jrm20 for helping me BTW.
I dont meen to be rude but im just letting you know, because i know i was going to buy one from a store and i really did not like any of the ones out there for the price.
You get warrantys with the stuff you buy anyway. So i think thats the best thing to do.