Im new to the Iphone world so please excuse my noobness.. My phone is currently coming with the lastest 2.2.1(Iphone 3G 8GB) software if i use itunes to restore it.. what software will it go to, do i have to download or purchase the latest software from Itunes? As far as activation goes..I'll be using a sim adapter to use my Tmobile SIM card.. what steps does the activation include?