Hi stealthtransam,
I have the exact same problem. I bought GPRS Modem with Leon G100 on it. I figured out how to send AT commands via PC RS232 Terminal for SMS, Calls, ShortCodes etc.
I would like to know how to get latitude/longitude position by using this device (Leon G100 and SIM card). Have you figured it out, do you have some tips ?
Thanks in advance