Try downloading QZed from killefiz. It is a great (graphical) editor as a replacement for those afraid of vi.
and unlike the notepad application, this does now append line breaks unneccesarily.
One you have that (or have the courage to try vi, it is not that hard really, once you remember the key sequences), then just add the line /dev/ttyS0 at the begining of the file (/dev/etc/peers/dialupxxxxxx).
But be warned, whenever you go into the network setting and change anything thuu the interface, the /etc/ppp/peers file will automatically convert back to the IrDA standard and the serial mod line will be erased again.
But once changed and if you dont toucvh the network interface for settings, it will work fine for each connection session.
Note : also pinclude the line \'idle 100\' so connection does not break while the connection is on idle time. 100 maybe modified to suitable value. Add this line at bottom of the same file.
If using vi do the following
vi <filename>
press \"i\" to go into insert mode
type in \'/dev/ttyS0\' [without quotes]
press \'cancel\' button to give an escape key press
then type :wq to save the file and exit from vi
hope that helps
