I tried the site, but I can't figure out what product line my computer is. So, since I have a gateway, I went to the Gateway site. I did the "memory search" through there by just adding my serial number. It gave me how much memory I could use up to, the highest memory card available, which one to use, and gave me the option to buy the $280 part

As you can tell, I didn't buy it. I have three "slots" to put memory. I have 128. If I add a 128 will it work as I have 256? It seems as thought it should, but Iam definately not a wiz at this stuff. I have never even seen inside my computer. I am just wondering in case I ever want to get some one to upgrade me.