using modem gprs

I´m new using arduino and electronic devices. I don´t know what to do in order to make this modem https://www.circuitsathome.com/mcu/interfacing-arduino-to-usb-gprs-modem/comment-page-2#comment-13658 works. So I really aprecciate any help Thanks

Why have you started another thread for the same question? You haven't answered my question there.

http://arduino.cc/forum/index.php/topic,118386.0.html