/dev/ttyS0 should be there regardless. It may be necessary to do a symlink to it from /dev/modem Check out this thread here: http://ubuntuforums.org/showthread.php?t=3223&highlight=modem It helped me to get an external modem running. Open up a terminal and type "sudo ln -s /dev/modem /dev/ttyS0" if the stuff at the link doesn't work. -- mr_ed