Well for under $2000 this is what I came up with. You will see I "cheated" on the water cooling, but unless your gona do some extreme overclocking, its probably not worth it.
Case: Newegg.com - COOLER MASTER HAF 932 RC-932-KKN1-GP Black Steel ATX Full Tower Computer Case - Computer Cases
Motherboard: Newegg.com - EVGA E760 CLASSIFIED "Overclocker's Pick" 3-Way SLI + PhysX 1366 Intel X58 EATX Intel Motherboard - Intel Motherboards
CPU/RAM Combo: Newegg.com - Computer Parts, PC Components, Laptop Computers, LED LCD TV, Digital Cameras and more!
GPU/Power Supply Combo: Newegg.com - Computer Parts, PC Components, Laptop Computers, LED LCD TV, Digital Cameras and more!
SSD: Newegg.com - Intel X25-M Mainstream SSDSA2MH080G2R5 2.5" 80GB SATA II MLC Internal Solid State Drive (SSD) - SSD
HDD: Newegg.com - Western Digital Caviar Black WD5001AALS 500GB 7200 RPM 32MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive -Bare Drive
DVD-RW Drive: Newegg.com - LITE-ON Black 24X DVD+R 8X DVD+RW 24X DVD-R 6X DVD-RW 12X DVD-RAM 16X DVD-ROM 48X CD-R 32X CD-RW 48X CD-ROM 2MB Cache SATA 24X DVD Writer - CD / DVD Burners
CPU Cooler: Newegg.com - CORSAIR Cooling Hydro Series CWCH50-1 120mm High Performance CPU Cooler - CPU Fans & Heatsinks
Total w/shipping: $1,948.76
Thats a bit on the expensive side.
Could go for something like this, which is similar to Tro's build, but with SATA 6.0gbs hard drive, air cooling, different case, different ram and a bigger hdd.
Newegg.com - Computer Parts, PC Components, Laptop Computers, LED LCD TV, Digital Cameras and more!
Newegg.com - Computer Parts, PC Components, Laptop Computers, LED LCD TV, Digital Cameras and more!
Newegg.com - Intel X25-M Mainstream SSDSA2MH080G2R5 2.5" 80GB SATA II MLC Internal Solid State Drive (SSD) - SSD
Newegg.com - ASUS P6X58D Premium LGA 1366 Intel X58 SATA 6Gb/s USB 3.0 ATX Intel Motherboard - Intel Motherboards
Newegg.com - Western Digital Caviar Black WD1002FAEX 1TB 7200 RPM 64MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive -Bare Drive
Newegg.com - COOLER MASTER CM690 II Advanced Black Steel body / Plastic + Mesh bezel ATX Mid Tower Computer Case - Computer Cases
Newegg.com - Prolimatech Megahalems Rev.B CPU Cooler - CPU Fans & Heatsinks
Newegg.com - SILVERSTONE FM121-B 120mm Case Fan - Case Fans
Newegg.com - LITE-ON Black 24X DVD+R 8X DVD+RW 24X DVD-R 6X DVD-RW 12X DVD-RAM 16X DVD-ROM 48X CD-R 32X CD-RW 48X CD-ROM 2MB Cache SATA 24X DVD Writer - CD / DVD Burners
The prolimatech megahalems end up being about the same price, and they'll out perform the H50 by quite a few degrees. Then the 1tb WD black will take advantage of the motherboards 6.0gbs, case choice is up to you, I like the 690 II advanced since its $100, has a hotswap bay, room for two internal rads, lots of wire management, and its very well built.
Total $1,761.90 , which leaves more room for monitors. Could get two or three and possibly be under 2300 still, and use the 5870 for eyefinity.
EDIT: Forgot to ask, but do you need OS? Win7 adds another $130 or so.
some stuff are missing.. guess they dont sell the stuff u guys recommanded..