I suggest the following:
Motherboard: The AN7 from Abit or the A7N8X Deluxe from Asus.
DDR SDRAM: Corsair Micro XMS Series TWINX1024-4000PRO (2x512MB DDR SDRAM modules)
GPU: ATI Radeon 9800 Pro A-I-W
Sound Card: Creative Labs Audigy 2 ZS Platinum
PS: ThermalTake 480W
http://www.frozencpu.com/cgi-bin/frozencpu/psu-22.html and have Frozen CPU sleeve the wires.
Processor: AMD Athlon XP 3200+
Of course, if money is definately not an issue then buy an AMD FX and a pimp motherboard from Abit or Asus to go along with it.