only one problem with building your own computer,,if the mother board goes bad,,,or memory,,hard drive,,3d card,,,prossesor,,,tower power supply,,,all that stuff,,you have to bite the bullet after 90days,,lol,,with a dell,,you get a nice 4 year warenty<~~only reason i got one,,i got tired of fighting my old home built computers,,lol,,plus at the time,,to get the same preformance building it my self,,would of costed me close to the same,{at the time pentuim 4s were spendy},with out a huge fat warenty,,,anything goes bad in my cpu,,i call,,,and they send me new stuff,,easy as that,,,lol
but building your own can be fun too,,i built my last machine,,and for 6 years,,i constanly upgraded it,,started with a cheesy 2mb card,,and 3 gig hard drive,,lol,,,and in the end,,i had 2,,monster 2 link cards in it,,24mb now,,lol,got good frame rates for a old machine,,i used it on aces high till a year ago,,,but if you dont wanna hassle with it,,,buying a new one is best,,but if you wanna fiddle with your computers,,its good to build your own,,i got both my self,,lol