I'm going to appologise for this right now, because I'm ignorant. I currently have 512MB of RAM. I think I want to upgrade, but don't know what or where. I have a CORSAIR CMX512-2700C2. It fits into one space, and I have two more open slots. Can i just buy some memory sticks and just pop them in? Do i have to buy the identical thing or is there something better to have? Big question huh! I have know clue of what to do. Any ideas?