If the budget is flexible, you/he may prefer one of the dual-core amd x2 cpus, although he could upgrade to this later as the mobo will support these chips, these allow the user to say, play a game while at the same time ripping a cd.
Unless he is pretty sure about using the sli option later this is a waste and the money saved could be spent elsewhere.
While the psu (480W) is a very good choice, is it enough for the graphics card, esp if he does decide to use 2 later on. I'm not sure about the power requirements for the 7800s, but may be worth checking.
Don't take these as a critism, just ideas off top of my head:-0