iPhone Activation Woes - Activation with New SIM Card

I just finished the activation process through iTunes. Since I'm now an AT&T customer with a temporary number assigned to my wife's iPhone, it was pretty easy. The process ended with "Congratulations, AT&T is activating your iPhone. Your iPhone will notify you when activation is complete. To set up and sync this iPhone, click continue." In other words, that's it! It was immediately activated! I didn't have to restore the software or anything -- everything already synced remained. It's just that now, the phone is now working again with this new and supposedly local number. Next step: The Port