Id just like to thank everyone who has posted because all the help is appreciated.
This is what i am planning now.
Case £73.60
Coolermaster Wave Master
Hdds £115.90
2*Samsung SpinPoint P SP2004C 200GB SATA-II 8MB Cache
Mobo £119.95
Asus A8N32-SLi Deluxe nForce4 SLi X16 (Socket 939) PCI-Express
Processor £289.95
AMD Athlon 64 X2 Dual Core 4400+
Ram £134.95
OCZ 2GB (2 x 1GB) PC3200 Dual Channel Platinum Series EL-DDR CAS2
Video card £194.95
XFX GeForce 7800GT Extreme Edition 256MB GDDR3 VIVO TV-Out/Dual DVI (PCI-Express)
PSU £54.95
Hiper HPU-4K580-MK Type R 580W Modular ATX2.2
Sound card £29.95
Creative Sound Blaster Audigy 4 7.1 EAX Sound Card
Subtotal £1,014.20
VAT £177.49
Total £1,191.69