Hi mate, had a look at that computer you posted, its not bad actually, deffinately a bargain at the price theyre selling at.
I checked the site and you said that your on a budget, why didnt you look at this one RCS Razor - Gaming Pc - RAM Computer Systems - Gaming Pcs - Desktop Pcs - Gaming Computers - Laptop & Tablet Pcs - Leeds UK
its well under £500, infact its under £400 hehe. It doesnt have a monitor but the parts are good, phenom cpu, radeon 6 series gfx and sataiii hard disk. Id be inclined to go for that over the other and maybe source my monitor from somewhere else if i didny need a full set up.
Two year warranty aint bad either, they must guarantee the parts they use or why would they offer such a long warranty.
Anyway, good luck with your pc.