I am looking to upgrade the RAM in the computer in my sig. I am aware that the max this computer can use is 3 gigs. However, I was wondering what would happen if I installed 2X2GB chips. Would the computer work? would it recognize both chips with a total of 4GB but only be able to use 3GB? Does RAM would better in parallel configurations (ie 2X1GB or 2X2GB instead of 1X1GB and 1X2GB)??