i plan to be a first time customer for the iphone 3G. i don't have the original iphone, but i do have a Motorola Go Phone(no annual contract, just pay as you go) i purchased from my local AT&T branch. Will i be able to use what's left of my air time minutes (around $85 worth) and transfer it to the purchase of the $199 iphone 3G? maybe as rollover(downpayment) to the required 2yr contract with AT&T? thanks.