Not by the sound of the name.
There's a copy to be found in the link in my signature. It's a fairly simple program and its purpose is to send commands from serial monitor to device (in this case modem) and send any replies back to serial monitor. It does this by writing any incoming data from the device to a character array, and when it is either full or there is no more data to be read, send it to serial monitor.
Load it into the Arduino, open serial monitor, type in AT and you will get the reply AT OK.
Within the script if you keep monitoring the incoming character you can check for carriage returns and new line characters and act accordingly.