I currently have 4 family members backing up their laptops (all Macs) using a Time Capsule. I'm giving my MBP to my wife who is retiring her 12" Aluminum MBP (ok, that was my old one, also) and I'm getting a new MacBook Air. So, in effect, we will have 2 new laptops to back up on the Time Capsule....does anyone know...do we have to do anything to the Time Capsule to get rid of the old backups and start new ones?