LN8090 Microsoft Windows XP Professional SP2 OEM Single £99.70
LN11240 1Gb (2x512Mb) Corsair, DDR400/PC3200,non-ECC, 184 DIMM, unbuffered, CL2.5, Lifetime Warranty £61.04
LN11833 NEC ND-4550A Silver 16x16 DVD±RW Dual Layer DVD-Writer OEM UK £31.21
LN10089 80Gb SATA300 Hitachi (IBM/HGST) Deskstar 7K80 (7200rpm,8MB) - NCQ £39.53
LN12111 Foxconn S939 6150K8MA-8KRS £57.30
LN9692 Akasa AK-862 S754/S939 9cm Ultra Quiet Amber Heat Sink Fan - A64/FX53 £9.27
LN11262 XClio 6010 Black (Silver Alumin Front) Midi Tower Case w/o PSU Hi End Prescott Ready £28.19
LN7925 425W HiperPower HPU-4S425 4th Gen Quiet Dual Fan Active PFC (24/20 pin)(ATX/BTX) £35.12
TOTAL £361.36
from Scan
AMD Athlon 64 3000+ (Skt 939) OEM - £81.18 (inc free delivery)
Toat = £462.44
You could save a few quid getting Windows media center, but i'm not sur how that would effect you?
Dave