Trying to resurrect an old C2D desktop, as Mr. 7's laptop is on it's last legs.

The machine is working, but I only have 2GB of suitable ram (actually it's rated 667Mhz but it's kingston, and it tests OK)

Does anyone have 2 x 1Gb sticks of suitable ram floating about (or 2 x 2Gb) that they'd be willing to donate or sell cheap?  The type required is PC2-6400 DDR2 800 SDRAM (non-ECC)

EDIT: Just reading the specs this will go to 8Gb (it has 4 slots) ... now that'd be amaze

TIA.  I'm in Auckland.