...FROM PAKISTAN,LAHORE to USA, Oklahoma? hi ,, i need to ask that i am moving from PAKISTAN, LAHORE to U.S.A, Oklahoma, OK ,,, i am using Warid telecom as a (sim card) network provider ,,, and if we want to buy a SIM over here in Lahore we just go to a franchise and buy it than reg it over our National id card,,, by calling at a specific num ,,, than recharge its balance using a scratch card ,,, what is the procedure to get the sim AT USA ,, OK ,,,, if we have to register it how it can be done ,,,, and what are the network providers ,,, how do you people recharge ,,,,, and can i use the SIM which i will buy at oklahoma on my existing cell which i previously bought here in Lahore Pakistan (are there some area locking or code ,, unlocking problems) ?? it is a SAMSUNG GALAXY Y S5360 ,,, =)