I have a 1.83 GHz Intel Core Duo Macbook with 512 MB memory. I have a few large programs that I run from time to time when I run 2 or more of these programs I am struggling. It works fine, just takes a while to load and everything. I am not that computer savy when it comes to upgrades but can anyone suggest a way to make my macbook run these programs a little more profficiently without buying a macbook pro? Thanks!