"Samsung e 256Mb 1Rx16 PC2-3200U 333-10-C1 KRH M378T3354B70-CCC 0507
I did some quick searching but nothing came up that looked vaguely similar.
The resellerrating.com looks like a good site. buyaib.com certainly does not look good there. When I was looking for samsung memory I saw the reseller memorygiant.com. They actually claim that Dell computers need special chips in the memory, I will paste the paragraph below:
with this reply:-
yours is DDR2 it is "second generation DDR"
I think that is what the 'PC2' is telling you in the samsung part number