Ok...I just sold someone my video game (NFL2k3 for the XBox) and he sent me back a check for $30. Ok...how can I "convert" my check into cash? I'm 17 and I'm dumb when it comes to finances. I do not have a checking account or let alone, a bank account. The buyer of my game said to bring my check to any bank and tell them you want to cash it in...is that true? Please help -- thanks 