Anyway I ordered the new PC:-
CPU: Core 2 Duo 2.13GHz
RAM: 2GB DDR2
GPU: Geforce 7600GS 512MB PCI-E
HDD: 320GB SATA2
PSU: 500W
Motherboard:- Socket 775, SATA2, onboard sound, onboard GBit ethernet, Nvidia SLI ready.
Cheap Zalman silent cooler to repace the stock CPU fan & heatsink.