Hey, I got a few basic questons about ram... here they are 1) I have 2 memory slots. Can I put a 1gb ram in one and a 256 in the other or do they have to be even like 512x2? 2) Where is a good place to buy cheap, quality, 1gb ram. ( if number 1 can be done ) 3) Whats the difference between ddr sdram and just ddr? Are they the same? I was one some shopping sites and they say different things so im just wondering. Thats basically it, thanks to anyone who can help me.