http://www.tomshardware.com/charts/desktop-cpu-charts-2010/Gaming-Left-4-Dead,2432.html <--- I would strongly recommend you wait until early April when the 1155 P67 mobo's are on the shelves. These Sandy Bridge cpu's clock higher, run cooler, and not any more expensive than a 1366 build ...actually a SB build is cheaper.
This build contains two o/c gtx 560's in SLI. Just take out of this build what you don't need (already have).
http://www.coolermaster.com/product.php?product_id=6606 <--- more info on that case
http://www.newegg.com/Product/Product.aspx?Item=N82E16811119197 $99.98 FREE SHIPPING
COOLER MASTER HAF 922 RC-922M-KKN1-GP Black Steel + Plastic and Mesh Bezel ATX Mid Tower Computer Case
http://www.newegg.com/Product/Product.aspx?Item=N82E16817207003 $129.99 - $99.99 after mail-in rebate
XFX Black Edition P1-750B-CAG9 750W ATX12V v2.2 / ESP12V v2.91 SLI Ready CrossFire Ready 80 PLUS SILVER Certified Modular Active PFC Power Supply
http://www.newegg.com/Product/ComboDealDetails.aspx?ItemList=Combo.592174 Combo Price: $474.99
Intel Core i7-950 Bloomfield 3.06GHz LGA 1366 130W Quad-Core Processor BX80601950
ASUS Sabertooth X58 LGA 1366 Intel X58 SATA 6Gb/s USB 3.0 ATX Intel Motherboard
http://www.newegg.com/Product/Product.aspx?Item=N82E16835233029 $44.96 - $24.96 after mail-in rebate FREE SHIPPING
XIGMATEK Intel Core i7 compatible Dark Knight-S1283V REV.W with ACK-I5361 120mm Long Life Bearing CPU Cooler I7 i5 775 1155 and AMD compatible
http://www.newegg.com/Product/Product.aspx?Item=N82E16835154003 $6.99 FREE SHIPPING
Tuniq TX-2 Cooling Thermal Compound
http://www.newegg.com/Product/Product.aspx?Item=N82E16820226181 $89.99 FREE SHIPPING
Mushkin Enhanced Radioactive 6GB (3 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model 998983
http://www.newegg.com/Product/Product.aspx?Item=N82E16814125363 $249.99
GIGABYTE GV-N560OC-1GI GeForce GTX 560 Ti (Fermi) 1GB 256-bit GDDR5 PCI Express 2.0 x16 HDCP Ready SLI Support Video Card
http://www.newegg.com/Product/Product.aspx?Item=N82E16814125363 $249.99
GIGABYTE GV-N560OC-1GI GeForce GTX 560 Ti (Fermi) 1GB 256-bit GDDR5 PCI Express 2.0 x16 HDCP Ready SLI Support Video Card
http://www.newegg.com/Product/Product.aspx?Item=N82E16827136177 $16.99 FREE SHIPPING
LG Black 24X DVD+R 8X DVD+RW 16X DVD+R DL 24X DVD-R 6X DVD-RW 12X DVD-RAM 16X DVD-ROM 48X CD-R 32X CD-RW 48X CD-ROM SATA DVD Burner - Bulk - OEM
http://www.newegg.com/Product/ComboDealDetails.aspx?ItemList=Combo.591429 Combo Price: $159.98 FREE SHIPPING
SAMSUNG Spinpoint F3 HD103SJ 1TB 7200 RPM SATA 3.0Gb/s 3.5" Internal Hard Drive -Bare Drive
Microsoft Windows 7 Home Premium 64-bit 1-Pack for System Builders - OEM
Total: $1,523.85 *not including shipping, rebates, etc...
http://www.newegg.com/Product/Product.aspx?Item=N82E16820227551 $219.99 - $199.99 after mail-in rebate card FREE SHIPPING
OCZ Vertex 2 OCZSSD2-2VTXE120G 2.5" 120GB SATA II MLC Internal Solid State Drive (SSD)
http://www.newegg.com/Product/Product.aspx?Item=N82E16824236100 $159.99 - $149.99 after mail-in rebate card FREE SHIPPING
$15 off w/ promo code EMCKHJK25, ends 2/16
Asus VE228H 21.5" Full HD HDMI LED BackLight LCD Monitor w/Speakers ASCR 10,000,000:1