This is what i am planing to build (not really sure where post this, but i thought here was best) PLease have a look and tell me any errors i have made or recomendations. (Prices may not be up to date)
Case: ThermalTake Tsunami Black Aluminum (VA3000BWA) +Window c/w 3x case fans +USB2 +Firewire NO PSU £0073.99 - micro direct
PSU : Tagan 420W whisper quiet 21dB TG420-U01+dual fan supports12v EPS SATA/XEON ATX/BTX (3 Year Warranty)
£0059.91 - scan
Motherboard: Asus A8N-SLi Deluxe (Raid5, extra SATA, extra GBit Lan) Socket 939 nForce 4 £0112.14 - micro direct
CPU: AMD Athlon 64 3500 32/64Bit CPU S939 Winchester 90nm Retail inc Heat Sink Fan & 3 Years Warranty £0189.16 - micro direct
RAM: Corsair (VS1GBKIT400C3) 1024MB (2 x 512MB Matched Pair), DDR400 / PC3200, non-ECC, Unbuffered,
CL3, Lifetime Warranty £0103.39 - scan
HDD: Maxtor DiamondMax Plus10 160GB/SATA 8MB Cache £0058.43 - scan
GPU: XFX GEFORCE 6600GT PCI-E 128MB DDR3 TV+DUAL DVI £0129.25 - scan
Optical drive2: nec ND3500A Dual Layer Int IDE Black 16x DVDRW +/- OEM £0039.29 - scan
Optical drive2: LG 16x Black DVD-ROM + 52x CD-ROM IDE £0016.91 - scan
Floppy: 1.44Mb Sony Black Floppy Disk Drive £0004.29 - scan
Total ex. monitor: £0879.87
Monitor: 17" Sharp LL-172GB 16ms DVI Black MultiMedia TFT Monitor (3yr onsite) £0253.74 - micro direct
Total inc monitor: £1044.52
Thanks everyone!!!