Hi there, I'm not exactly hardware savvy, so please bear with me. I've been looking into some cool video games for my MacBook (white, couple of years old, Leopard), and it appears I need a new video card/graphics/whatever. I think it's GeForce or something. I've heard in the past that the video card/graphics could not be upgraded in the Macs. Not sure if this is true or if it has changed. Is there any possible way on Earth that I could send the MacBook into a shop and get the video card/graphics updated? It doesn't have to be Apple; a genuine third party would do. Thanks!