Check out this rig:
http://www.tigerdirect.com/applications/searchtools/item-Details.asp?EdpNo=4660174&sku=B69-1066&SRCCODE=WEM1922BY&cm_mmc=Email-_-Main-_-WEM1922-_-barebone

Asus P6T Motherboard
Intel Core i7 920 Processor BX80601920
OCZ Gold Tri Channel 6GB PC12800 DDR3 Memory
Seagate Barracuda 1.5TB Hard Drive
NZXT Tempest ATX Mid-Tower Case
Ultra LSP650 650-Watt Power Supply

Add an OEM Vista Home Premium x64 plus shipping and it comes to a total of $1141.83 after $10 mail in rebate. Unless you want it next day then that's gonna cost you spry $156.47 more.