Change graphics in a MacBook?

Hiya! I have an Apple white MacBook. I was really excited about the new game called “Spore” coming out. Well they released the system requirements and it claims the game won’t run with my GMA 950. Is there any way I can fix this? Like do I need to sent my laptop into Apple and ask them to put a different graphics…something in it? Or do they not do that? I’d really love to play this game (since it’s one of the few games made for Mac), but I can’t do that if I don’t meet the system requirements…. Thanks!!!