OK I want to get an iPhone 3G but I don't want to have a new contract for 2 years. So the logical choice is to get the $599 8GB iPhone which doesn't require a contract. My question is that, since I already have an ATT family plan, can I just buy the iPhone for $599 and use it in place of my old Nokia? Would I have to get a new number for the iPhone, as in get a new account? I don't really need the data plan as I am almost always within range of wifi and I don't want to pay any activation fees, etc as I already have an ATT account... Thanks!