a little over budget but should be a damn fine spec
X2 4800, 2GB G.Skill, 7800GT, Sonata II case with a 600w PSU (you can sell the 420w psu that comes with the case, or even use it in a different PC).
MY-007-GS G.Skill 2GB DDR ZX PC3200 (2x1GB) CAS2 Dual Channel Kit (F1-3200PHU2-2GBZX) (MY-007-GS)
£129.95 £129.95
KB-024-LG Logitech MX510 Performance Optical Mouse & Steelpad S&S Bundle - Retail (KB-024-LG)
£24.95 £24.95
KB-041-LG Logitech Ultra-X Keyboard - OEM (KB-041-LG)
£17.95 £17.95
MO-029-SA Samsung SM-930BF 19" LCD Monitor - Silver/Black (MO-029-SA)
£209.95 £209.95
GX-069-LT Leadtek GeForce 7800GT 256MB GDDR3 VIVO TV-Out/Dual DVI (PCI-Express) - Retail (GX-069-LT)
£174.95 £174.95
MB-087-AS Asus A8N-SLi Deluxe nForce4 SLi (Socket 939) PCI-Express Motherboard (MB-087-AS)
£91.95 £91.95
CA-040-AN Antec Sonata II Piano Black Quiet Case - 450W Smart Power PSU (CA-040-AN)
£65.50 £65.50
CA-002-SS Seasonic S12 600W Silent ATX2.0 Power Supply (CA-002-SS)
£87.95 £87.95
CP-129-AM AMD Athlon 64 X2 Dual Core 4800+ (Socket 939) - Retail (ADA4800CDBOX) (CP-129-AM)
£389.95 £389.95
HD-015-WD Western Digital Raptor 74GB WD740GD 10,000RPM SATA 8MB Cache - OEM (HD-015-WD)
£98.95 £98.95
Subtotal £1,292.05
VAT £226.11
Total £1,518.16
i stuck a Raptor in there as they're lightning quick, and really should help nicely with the long load times on FM (when using lots of leagues). feel free to drop it if you want though.