This is the first time i'm going to buy a Mac or use a mac, or even my first time buying a computer. My question is this : Is 1GB enough for me? Here are some specifics : I would only use Imovie, iphoto, safari, msn, itunes, limewire, games, and other movie making softwares. I Would make alot of movies, and upload alot of photos. I want safari to be fast, same for my other programs.. Please help me!