swap the CPU mobo and cooler for the following.
CP-117-AM AMD Athlon 64 3000+ Venice (Socket 939) - Retail (ADA3000BPBOX) (CP-117-AM)
£49.95 £49.95
FG-000-AR Arctic Cooling Freezer 64 Pro CPU Cooler (Socket 754/939/940) (FG-000-AR)
£14.50 £14.50
MB-002-AK Asrock 939Dual-SATA2 (Socket 939 & Upgradable to AM2) AGP & PCI-Express Motherboard (MB-002-AK)
£34.50 £34.50
the AMD CPU will clock far better than that intel will, the Arctic coolers damn good and £10 less and the Asrock board is reliable, bloody fast, overclocks very well and it has AGP and PCI-E so if youve already got a 9800pro you can stick it in there for the moment untill you want to go for a PCI-E card. Oh, and the Asrock boards AM2 compatible too (via an expansion card) so when he next needs an upgrade, youve got the option of going for AM2 and DDR 2.
if you do decide to go for a PCI-E card, get an X1800XT, best bang for buck card on the market at the moment @ £165, if your looking for a cheaper less powerful alternative then the 7600GT is only £117 but has around 40% less horsepower, will still wip the hell out of the 9800pro though.
p.s. 430 watts will be enough power for your option above and my options ive given you here.
I'll drop the floppy then.