Ok, thanks both of you for your replies.
Dilbert: I can't use newegg as I live in Ireland, and they don't deliver outside of the US.
I have changed my mind on what to get, and have chosen a special 'upgrade bundle':
Upgrade Kit Intel Pentium D 820, Mainboard, 1024MB DDR2, PCI-Express, VGA
which contains:
Intel Pentium D 820 2.8GHz
ABIT SG-95, SIS662
Corsair Value S. PC4200 DDR2 1024MB
Any thoughts? The onboard graphics on the motherboard is possibly rubbish. Listed as "SiS 662". However, I only need something to keep me going. I will probably buy a decent graphics card in the near future.
Alternatively for an extra €30 I can change the processor from a Pentium D 820 to a Pentium D 915 at the same clock rate. Is this extra worth while?
Link