I'll do 2, one for Intel, one for AMD, just for the full effect.
Intel:
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Motherboard: ASUS P5ND2-SLI Deluxe Socket T (LGA 775) Nvidia nForce 4 SLI ATX Intel Motherboard
Video Cards: 2 Nvidia 6800 Ultra's 256MB PCI-E 16x (Overclock Em)
Processor: Intel Pentium 4 3.6Ghz 560J Prescott 800MHz FSB 1MB L2 Cache LGA 775 Processor (We would OC it to around 4.1 hehe)
RAM: 2x 1GB G. Skill PC3200, if anyone could find it.
HD: 2x 74GB Western Digital 10k RPM in RAID 0
I'm not gonna post the case and such, just the basics.
AMD:
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Motherboard: DFI LANPARTY nF4 SLI-DR Socket 939 NVIDIA nForce4 SLI ATX AMD Motherboard
Video Cards: 2 Nvidia 6800 Ultra's 256MB PCI-E 16x (Overclock)
Processor: AMD Athlon 64 FX55 2.6Ghz San Diego 1GHz FSB 1MB L2 Cache Socket 939 Processor (Overclock to about 3 or 2.9Ghz)
RAM: 2x 1GB G. Skill PC3200, if available
HD: 2x 74GB Western Digital 10k RPM RAID 0