Thanks,

I don't think my motherboard (socket A) can take a dual core CPU but more RAM on a dual-channel sounds promising. I read somewhere that the max RAM a 32-bit OS can take is 3Gig and was just wondering whether this is true. If so then 3 x 1gig sticks (2 on a dual-channel) would seem the best bet as 2x2gig + 1 would be greater than the PC could take.