thanks, i've never had a forum reply faster!
the computer is about £850 and its got specs like:
Memory 1024 MB DDR400 PC3200
Motherboard ASUS® A8V: DUAL DDR, S-ATA, 8X AGP, 5 PCI, ETC
Hard Drive SATA 250 GB HARD DISK @ 7200rpm 8mb cache
Graphics Card 256MB GEFORCE 6600 8X AGP + DVI + TV-OUT...