Okay, how about:
Your basket
Product Name Qty Price Line Total
Antec Nine Hundred Ultimate Gaming Case £57.99
(£68.14) £57.99
(£68.14)
Powercolor ATI Radeon HD 4870 X2 2048MB GDDR5 TV-Out/Dual DVI/HDMI (PCI-Express) - Retail £299.99
(£352.49) £299.99
(£352.49)
Intel Core 2 Quad Q9550 LGA775 'Yorkfield' 2.83GHz 12MB-cache (1333FSB) Processor - Retail £191.99
(£225.59) £191.99
(£225.59)
Asus P5Q Deluxe Intel P45 (Socket 775) PCI-Express DDR2 Motherboard £114.99
(£135.11) £114.99
(£135.11)
GeIL 4GB (2x2GB) PC2-8500C5 1066MHz Black Dragon EVO ONE DDR2 Dual Channel Kit (GE24GB1066C5DC) £69.99
(£82.24) £69.99
(£82.24)
Pioneer DVR-216DBK 20x DVD±RW SATA Dual Layer ReWriter (Black) - OEM £15.99
(£18.79) £15.99
(£18.79)
Creative Sound Blaster X-Fi Xtreme Gamer 7.1 Sound Card - Retail £51.99
(£61.09) £51.99
(£61.09)
Corsair TX 750W ATX2.2 SLI Compliant PSU £74.99
(£88.11) £74.99
(£88.11)
Razer DeathAdder Blue 1800dpi High Precision Gaming Mouse - Retail £31.99
(£37.59) £31.99
(£37.59)
Enermax Aurora Brushed Aluminium Keyboard - Silver £29.99
(£35.24) £29.99
(£35.24)
Samsung SpinPoint F1 750GB SATA-II 32MB Cache - OEM (HD753LJ) £57.99
(£68.14) £57.99
(£68.14)
Sub Total : £997.89
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Shipping cost assumes delivery to UK Mainland with:
City Link Parcel Next Day (Delivered Mon-Fri)
(This can be changed during checkout) Shipping : £12.95
VAT is being charged at 17.5% VAT : £176.90
Total : £1,187.74
Change keyboard/mouse/case for whatever you want, and this is also presuming you'll be using a 24in monitor, if you're using something smaller change the graphics card to a regular 4870 or even a 4850. Also the sound card isn't essential so remove it if you want.
Edit. I forgot to add a different CPU cooler, you should probably add one if you're going to overclock the CPU (which you should!)