CP-130-IN Intel Core 2 DUO Extreme Edition X6800 "LGA775 Conroe" 2.93GHz (1066FSB) - Retail (CP-130-IN)
£649.99 £649.99
MB-140-AS Asus P5WDG2-WS Extreme Intel 975X (Socket LGA775) PCI-Express Motherboard (MB-140-AS)
£149.99 £149.99
MY-058-GL GeIL 2GB (2x1GB) PC6400 800MHz Ultra Low Latency DDR2 Dual Channel Kit (GX22GB6400UDC) (MY-058-GL)
£139.99 £139.99
2x HD-073-WD Western Digital Raptor X 150GB WD1500AHFD 10,000RPM SATA 16MB Cache - OEM (HD-073-WD)
(1)
£171.95 £343.90
2x HD-070-WD Western Digital Caviar SE16 320GB 3200KS SATA-II 16MB Cache - OEM (HD-070-WD)
(2)
£59.95 £119.90
CD-044-LG LG GSA-H10ABRL 16x16 DVD±RW Dual Layer ReWriter (Black) - Retail (CD-044-LG)
£25.50 £25.50
HS-020-ZA Zalman CNPS9500-AT Aero Flower (Socket 775) CPU Cooler (HS-020-ZA)
£28.95 £28.95
SC-031-CL Creative Sound Blaster X-Fi Elite Pro - Retail (SC-031-CL)
£158.95 £158.95
CA-048-AN Antec SLK3800BUK Black Quiet Midi Tower Case - 400W SmartPower PSU (CA-048-AN)
(3)
£54.99 £54.99
2x GX-050-CO Connect3D ATI Radeon X1950 XT-X SILENT Heatpipe 512MB GDDR4 AVIVO TV-Out/Dual DVI (PCI-Express) - Retail (GX-050-CO)
(4)
£279.95 £559.90
HD-094-WD Western Digital WDG1T5000 MyBook Pro 500GB Firewire 400 / 800 / USB2.0 External Hard Drive (HD-094-WD)
(5)
£168.95 £168.95
CA-030-EN Enermax Galaxy 850W EGA850EWL ATX2.2 Modular PSU (CA-030-EN)
£164.99 £164.99
Subtotal £2,566.00
VAT £449.05
Total £3,015.05
(1) I don't know whether you want to set your system up in a RAID configuration, if not - then most likely you will want only one of these drives.
(2) I went for 2 320gig drives rather than one 500 gig. They cost roughly the same, but you get around an extra 140 gigs of storage (unformatted).
(3) I'm never for one spending lots of money on a case, with all the components in your system you'd need lots of power, so obviously get rid of the paltry 400w PSU supplied with this case.
(4) I'm not sure on the graphics card front, other people will no doubt choose different ones. The motherboard I think benifets ATI cards better than Nvidia as far as I know. Though don't quote me on that

. Also I'm uncertain whether people buy two cards anymore, again taking one out will keep you well under budget.
(5) Woo even a back up solution, this is like the bigger older brother version of the drive I'm about to buy.
*Ever so slightly over budget. You said that you were interested in the OcUK system, which doesn't contain monitor, mouse, keyboard, speakers and OS and so I have done the same to your spec.
I didn't think that I could spend £3k simply on a base unit but I just about did. God I wouldn't mind this system at all....*drools*