prepait mastercard help for ps3

i bought one for 60 bux and i can provide all the info but the only prob is that i don't live in the us and i wanna buy some songs for guitar hero world tour kuz i got mine region 1 and i don't have a billing address in the us can anyone share his or hers please thank you if no is there any other solution i don't have a credit am just a kid ! :(