Hi bibang,that's good to know that your project is successful.Making it heard makes me optimistic that my project can be successful too. But I wonder if why do you use a usb modem, what is the use of it in your project? have you not use the gsm? if not, did you directly connect the gsm to to the computer database.? Please tell me what you exactly did in your project. I really need your help, please post the sketches you use or the combined sketch you use.please!!!Hope you can help me... 