I recently bought a new computer (iMac), but I am having problems syncing my .Mc with it. Every time the computer goes to sync with .Mac, it asks me for the password to my OLD computer (PowerBook G4). I don't remember the old computer's password, (and why does it need to know that anyway?) Although the computer does iMac does sync all the information, I just want to stop this annoying prompt. Any suggestions?