I just received a 160GB LaCie d2 for christmas and I was thinking of backing up my entire PowerBook hard drive just for the sake of having everything backed up. What I was hoping to do, if possible, is make it so whenever my LaCie disk is mounted, it automatically syncs with my PowerBook to cover any changes that have taken place since I last plugged it in. For starters, I don't even know how to make a full hd backup, so any info on that would be helpful. My thinking, though, is that there are so many changes made constantly to my PowerBook disk that it would be easiest if my external drive made all of the respective changes as well. Can this be done? Thanks in advance.