Hi guys, I also have a HP DV800 and i want to upgrade the memory.Currently it has 512 mb, but i'm not pretty sure what is the maximum that i can upgrade. Is it 1GB or 2GB? I ask this because one time somebody told me that there are 2 versions (or something like that) of this laptop. One has DDR and other one DDR2. I'm not really familiar with those terms. Can somebody explain to me which one can i do? I was checking on EBAY, to buy them but i'm not pretty sure: http://computers.shop.ebay.com/Comp...n&_armrs=1&_from=R40&_ipg=&_trksid=p1638.m120 Thanks.