This is well under the budget so if you need an OS or want to choose a nicer case or better clocking Ram then you have that option but for the price you have a very fast system at stock
CP-127-AM AMD Athlon 64 X2 Dual Core 4400+ (Socket 939) - Retail (ADA4400CDBOX) (CP-127-AM)
£284.95 £284.95
GX-047-HT HIS Excalibur ATI Radeon X1900 XT-X 512MB GDDR3 AVIVO TV-Out/Dual DVI (PCI-Express) - Retail (GX-047-HT)
£299.95 £299.95
MY-006-MK Mushkin 2GB DDR EM3200 Enhanced Performance Dual Channel Kit (2x1GB) CAS3 (991461) (MY-006-MK)
£114.95 £114.95
MB-129-AS Asus A8R-MVP Crossfire (Socket 939) PCI-Express Motherboard (MB-129-AS)
£69.95 £69.95
CD-026-NE NEC ND4551 16x16 DVD±RW Dual Layer LabelFlash ReWriter (Black) - OEM (CD-026-NE)
£27.95 £27.95
CA-040-AN Antec Sonata II Piano Black Quiet Case - 450W Smart Power PSU (CA-040-AN)
£65.95 £65.95
HD-048-WD Western Digital Caviar Special Edition 200GB 2000JS SATA-II 8MB Cache - OEM (HD-048-WD)
£51.95 £51.95
Subtotal £915.65
VAT £160.24
Total £1,075.89