Right now, I have two 256 MB memory sticks in my computer and four total slots. I'm trying to upgrade to 2 gigs memory with four 512's. I'm not incredibly computer-smart, so this might be a stupid question, but when I'm installing my four new sticks, I can just take out the two old ones (the original ones that the computer came with), right? Or will my computer break on me? Really, sorry if this is a stupid question, but better safe than sorry, right?