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i will be buying it this weekend from ncix.com, CAD$700-800.
it will be for gaming, surfing the internet, watching movies, homework. I already have a keyboard, mouse, monitor, speakers, OS i might try to overclock it.

Intel Core 2 Duo E7400 Dual Core Processor LGA775 2.8GHZ 1066FSB 3MB Retail $140

4GB mem ram -$70-> this depends on what is on sale when i buy it, $70 budget, but it will be something along the lines of Corsair XMS2 TWIN2X4096-6400C5 4GB DDR2 2X2GB PC2-6400 DDR2-800 CL 5-5-5-18 240PIN Memory Kit

NZXT Beta ATX Tower Case 4X5.25 5X3.5INT No PS Front Audio USB eSATA Black $60

Western Digital Caviar Black 640GB 7200RPM 32MB Dual Proc 3.5IN SATA Hard Drive OEM 5YR Mfg Warranty $78

Gigabyte EP45-UD3L ATX LGA775 P45 DDR2 PCI-E 2PCI SATA2 HD Sound GBLAN Motherboard $114.35

BFG GeForce GTX 260 OC MAXCORE55 590MHZ 896MB 1.998GHZ GDDR3 PCI-E Dual DVI-I Video Card $180
or
EVGA E-GEFORCE GTS 250 756MHZ 512MB 2.2GHZ DDR3 PCI-E Dual DVI-I HDTV Out Video Card $150

OCZ ModXStream Pro 500W ATX 20/24PIN SLI Ready Modular Cables 135MM Fan Active PFC Power Supply $84
or
Silverstone Strider ST50F 500W ATX12V 24PIN Power Supply W/120MM Fan Active PFC $78
or
OCZ ModXStream Pro 700W ATX 20/24PIN SLI Ready Modular Cables 135mm Fan 80PLUS Power Supply $95

Im not too sure on which PS and video card i should get. Suggestions on the rest of the build would also be appreciated.