hi i have a problem i currently have a iphone with a gophone plan and i wanna get the iphone 3g now im hearing that u have to do a contract in the store and that they have to run a credit check the problem is i dont have a social security number cause im not a resident from united states but i pay my taxes and all that, is the only way for them to run a credit check is with a social security number or for example i can give them my ITIM number that i pay my taxes or something else?