Here's what I'm looking at for a setup. I'm still comparing the performance of 2 geforce 8800gts's in SLI against 1 8800 ultra.

Case:
NZXT LEXA Black ATX Mid Tower Case

Power Supply:
PC Power & Cooling 750watt

Motherboard:
EVGA 122-CK-NF63-TR LGA 775 NVIDIA nForce 680i SLI ATX Motherboard

Processor:
Intel Core 2 Duo E6600 Conroe 2.4GHz LGA 775 Processor Model BX80557E6600

Memory:
OCZ Flex FLC 2GB (2 x 1GB) 240-Pin DDR2 800 PC2-6400 Memory

Graphics Cards:
2 EVGA 640-P2-N821-AR GeForce 8800GTS 640MB 320-bit GDDR3 PCI Express x16 HDCP Video Cards

Sound Card:
Creative Sound Blaster X-Fi XtremeGamer Fatal1ty Professional Series

System Hard Drive:
Western Digital Raptor WD1500ADFD 150GB 10,000 RPM Serial ATA150 Hard Drive

Storage Hard Drive:
Western Digital Caviar RE2 WD5000YS 500GB 7200 RPM SATA 3.0Gb/s Hard Drive

Crappy DVD+- Burner:
SAMSUNG 18X DVD±R DVD Burner With 12X DVD-RAM Write, LightScribe Technology Black SATA Model SH-S183L
(until I'm able to rent BluRay discs from blockbuster or the drives come down in price, fuck em)

Crappy Floppy drive: (I still refuse to build a PC without a floppy drive)
SAMSUNG Black 1.44MB 3.5" Internal Floppy Drive Model SFD321B/LBL1

And probably some UPS from somewhere.