Now that I have a Powerbook, I'm finding I use it a bit more than my Tower. Yet, I still use the Tower for other important things as well. What is the best approach to synching the two? I have vital files on both, but I don't want to overwrite a newer file with an older file in backing up. Any suggestions? What is the best "technical" way of synching- booting up off the Powerbook in FW mode? How do you do that? I have an external FW drive that I was backing up files onto, but that's just another device in the middle of the whole process.