Its not a dead end mate, That pc is built so that its fully upgradable, The mobo supports AM3 cpu's, all the parts mach, ati and amd only, Mobo supports crossfire, power supply supports crossfire ect.
I'll do an intel 1 for you tonight.
@weakest link: The power supply I chose is a monster, it is needed for when he wants to run 2x 4870's in crossfire and for the cpu,under full load that cpu alone draws around 280watt. Im a big fan of the corsair power supply's but the 700watt corsair costs pretty much the same and I know this thermaltaake is awsome becaue i built a rig for a friend and that psu runs like a dream!!
Lian Li cases are insanely expenssive!!
The cheapest 1 retails for a round R1700 and it looks like a piece of shit!!