The modem can be either an internal or external. Verify you hear dial tone when the computer is trying to dial. Verify you hear touchtones ehen the computer is trying to dial Verify system is dialing the proper number - including area code if required. You should hear only modem tones after your computer has finished dialing. Verify Call Waiting is disabled.
First character is uppercase, everything else lower case.
Make sure that there is a modem in the machine. If its external make sure its turned on. Make sure that there is a dialtone on the line. Make sure that you have selected the correct ComPort. Sometimes external modems will overheat.