First thing I noticed... You chose DDR2 ram and a DDR3 motherboard... I'd go with this ram instead, 1600mhz memory is INCREDIBLY fast and its near enough the same price as what you linked...
Both of those processors are good although if he can stretch for the more expensive one DO IT, it will last you a good 2-3 years before you even need to THINK about doing an upgrade.
That hdd is terrible... Should be aiming for 32mb cache and 7200rpm MINIMUM. This is not much more expensive and will be ALOT faster, trust me.
Honestly what is the point in having a powerful cpu + ram + hard drive system with an on board graphics controller? That'd be like buying a ferrari engine and putting it in a peice of shit car, sure its fast but visually it looks terrible.
Ask him how much he'd stretch for a graphics card - Again, only ATI for this, Most cards price matched to nVidia have better benchmarks. Let me know what his budget for a gpx card is and get back to me.