1k$ or so Gaming Computer

APPROXIMATE PURCHASE DATE: To be a hundred percent honest, I might not buy this until the summer, but i could buy it this week.
BUDGET RANGE: Around 1000$, preferably lower. Price doesn't include shipping, and i didn't see any rebates on the parts i've looked at.

SYSTEM USAGE FROM MOST TO LEAST IMPORTANT: Gaming, surfing the internet, watching movies, and i don't do distributed computing.
PARTS NOT REQUIRED: Keyboard, mouse, monitor, CD/DVD Drive.

PREFERRED WEBSITE(S) FOR PARTS:I like NewEgg, as i live in the US(AZ),
but i'm open to other web sites.
PARTS PREFERENCES: None, this is my first build.

OVERCLOCKING:Maybe, last i checked overclocking a CPU runs it down quite fast, which will not fill my 5 year lasting hope.
SLI OR CROSSFIRE:Maybe, i figure in my price range i'd only be able to afford one GPU.

MONITOR RESOLUTION: Currently i can not give you the usual resolution i run my computer on as it's in the shop, but i believe it's 1280x1024.

ADDITIONAL COMMENTS: I'd prefer the thing to last about 5 years (As in, i could run a game released a week ago, five years from now, on lowest settings.). This is the best build i've found so far: Here