I think this is a very simple question, but I need some expert opinions on it. I have a 32-bit OS at my office, which runs Windows XP. Had trouble saving large (100+ MB) Photoshop files due to insufficient RAM. The IT dept. installed more memory, but the problem persists. I am told by the IT dude, "I don't know why it's not working because I put 8GB of memory in it." Correct me if I'm wrong, but isn't a 32-bit OS capable of reading only up to 4GB of RAM? Isn't the solution to my problem to upgrade to a 64-bit OS that has about 6GB of RAM? I understand that no matter how much memory you install -- or how much fairy dust you sprinkle over it -- a 32-bit OS still won't be able to access any more than 4GB of memory. Of course, I could be wrong. Any advice???