This build allows you to add another one of those 6950's later on.

http://www.newegg.com/Product/Product.aspx?Item=N82E16811147153 $54.99 FREE SHIPPING
Rosewill CHALLENGER Black Gaming ATX Mid Tower Computer Case, comes with Three Fans-1x Front Blue LED 120mm Fan, 1x Top 140mm Fan, 1x Rear 120mm Fan, option Fans-2x Side 120mm Fan

http://www.newegg.com/Product/ComboDealDetails.aspx?ItemList=Combo.624829 Combo Discount: -$10.00 Combo Price: $174.98 $15.00 Mail-In Rebate Card Price After Mail-In Rebate(s): $159.98
CORSAIR Enthusiast Series TX750 V2 750W ATX12V v2.31/ EPS12V v2.92 80 PLUS BRONZE Certified Active PFC High Performance Power ...
SAMSUNG Spinpoint F3 HD103SJ 1TB 7200 RPM SATA 3.0Gb/s 3.5" Internal Hard Drive -Bare Drive

http://www.newegg.com/Product/ComboDealDetails.aspx?ItemList=Combo.622006 Combo Discount: -$20.00 Combo Price: $339.98 $10.00 Mail-In Rebate Price After Mail-In Rebate(s): $329.98 FREE SHIPPING
Intel Core i5-2500K Sandy Bridge 3.3GHz (3.7GHz Turbo Boost) LGA 1155 95W Quad-Core Desktop Processor BX80623I52500K
MSI P67A-G43 (B3) LGA 1155 Intel P67 SATA 6Gb/s USB 3.0 ATX Intel Motherboard

http://www.newegg.com/Product/Product.aspx?Item=N82E16820226092 $42.99 FREE SHIPPING
Mushkin Enhanced Silverline 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1333 (PC3 10666) Desktop Memory Model 996768

http://www.newegg.com/Product/Product.aspx?Item=N82E16827135204 $21.99 FREE SHIPPING
ASUS Black 24X DVD+R 8X DVD+RW 12X DVD+R DL 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 Burner - Bulk - OEM

http://www.newegg.com/Product/Product.aspx?Item=N82E16814127555 $269.99 - $244.99 after mail-in rebate FREE SHIPPING
MSI R6950-2PM2D2GD5 Radeon HD 6950 2GB 256-bit GDDR5 PCI Express 2.1 x16 HDCP Ready CrossFireX Support Video Card with Eyefinity

http://www.newegg.com/Product/Product.aspx?Item=N82E16832116754 $99.99 FREE SHIPPING
Microsoft Windows 7 Home Premium 64-bit 1-Pack for System Builders - OEM

Total: $1,004.91 *not including shipping, mail in rebates, etc...