Ok so I just bought a new MBP and still currently have a Blacbook witch I have been useing time machine to back up my first question is can I just use the same Wd Passport and just start useing it on the new computer and it will over wright the old MacBook ? Second when useing time machine with my WD Passport does that aslo back up all my pics and music and video downloads that I had paid for from I tunes or do I need to make a seperate media folder for those downloads ? I thinks that's it, thanks...