My wife and I are visiting family for the holidays and only brought my MBP with us. My wife's parents gave her a new iPhone 4 yesterday. She'd like to start using the new phone before we head home next week. Is it possible for her to back up her current phone to my computer and then restore that backup to the new iPhone 4? Will she be stuck on my computer/account if we do that? Will it even work? She can wait a week if necessary, but it would be nice if she didn't have to.