okay, this is what you do.
you buy a really cheap customized computer from somewhr else, buy better parts yourself via frys or online, swap out the existing parts since its already thr. If something breaks down then you have HAN, me and extra parts for your solution.
bulding a computer is really easy, trust me, my friends who has not touched the parts inside a computer could build one in 2 hrs being mechanically inept and all.