Hey, I have a 12" Powerbook G4 with 512 MB of RAM. I want to run Motion 2 on it. I know Apple recommends 2GB's of ram but will it run at all on my Powerbook? The 30-day demo works great and I am looking in to buying it. I don't care about speed that much. I also need to know does Motion do overlaying video stuff like bluescreen effects (or something close)? Thanks!