I bought a computer that came with 512MB of RAM (two sticks of 256MB). Today I finally purchased another 512MB of RAM but when I check the "my computer" properties, it tells me that I have 0.99GB of RAM. Is that normal? *The computer is a Sony Vaio RB30. P.S.; I bought the RAM at Circuit City for like $25 bucks after rebates. It's the Kingston ValueRam. Do you guys know if that's decent? I noticed that there are more expensive RAM around. I use mostly Photoshop and Illustrator and was running out of memory.. Thanks!