Looks good hope you enjoy it
now you shold defintely get the opty. you can get rid of teh windows xp home, i mean dont you have any other cd's from past computesr. dell cd's would work :O. Even though im not sure if you bought a dell but who knows.
You can cut a lot of things out, getting a cheaper case, cheaper psu, 1GB of ram, not getting a DFI Mobo, smaller hdd. But i dont think you really want those do you
IF i were you i would probably not buy windows xp home, borrow a friends
, get some cheaper case maybe, as a last resort you can get a 6800GS