Whats the Biggest HD I can put in my MacBook? I've currently got an 80GB Installed but its not enough for my future plans. I will be using iMovie and iDVD extensively so 7200RPM would be nice, but i could get by on 5400RPM (what i've currently got). I really need over 100GB but any suggestions are appreciated. I don't know what physical size the drive is, so i cant google it myself without the technical info required. I know its a "user serviceable" part btw so i'll be fitting it my self. Thanks, Joe.