building gaming computer

i have been given the following components;

Intel Core 2 Duo E8500 Socket LGA775 processor

BFG Geforce 9800 GTX / 512MB / PCI Express 2.0 / Graphics Card

as my computer knowledge is limited i need some help on creating a compatible computer rig, any suggestions on what i could build? i have around £500 in my budget

thanx

OK here's the rest:

Case: antec 900

Mobo: ASUS Asus P5N-E SLI

PSU: Apevia / Iceberg / 680-Watt

RAM: Crucial Ballistix PC2-6400 2GB 2X1GB DDR2-800

HD: Seagate Barracuda 7200.10 250GB

Here's a CPU link if you want to compare or change:

http://techreport.com/articles.x/12091/6

Here's a GPU link to compare or change:

http://www.guru3d.com/index.php?page=vga_2

OK here's the rest:

Case: antec 900

Mobo: ASUS Asus P5N-E SLI

PSU: Apevia / Iceberg / 680-Watt

RAM: Crucial Ballistix PC2-6400 2GB 2X1GB DDR2-800

HD: Seagate Barracuda 7200.10 250GB

Here's a CPU link if you want to compare or change:

http://techreport.com/articles.x/12091/6

Here's a GPU link to compare or change:

http://www.guru3d.com/index.php?page=vga_2

Angry_Bosmer

650i chipset is old and doesn't OC well at all. And that PSU sucks. Apevia doesn't make good power supplies.

Here's my suggestions:

Mobo: ASUS P5Q Deluxe

PSU: Corsair 620HX

Case: CM Cosmos 1000

RAM: 2x2GB G.Skill DDR2-800

HDD: WD Caviar 640GB

OS: Vista HP 64 bit

Optical drive: http://www.overclockers.co.uk/showproduct.php?prodid=CD-040-AS

Total comes to £543.94 w/VAT