My wife's 2007 Macbook hard drive has died. Her optical drive is unusable, making installing the OS on a new hard drive a challenge. We think she has a good backup on our Timecapsule. I'm planning to buy a new hard drive to replace her failed one, but I need to know the procedure to re-install the OS without an optical drive. We have another mac in the house, and I'm considering upgrading both it and her laptop to 10.6. Any hints on the best way to re-install everything from the TimeCapsule?