Kirk, I don't know if this is a workable idea or not. What if it probed like it does now. If it finds something definative it goes no further, but if it does not find something definative, it guesses at ports based on the CTS line status. I apologize if this isn't feasable. Kirk Wood Cpt.Kirk at 1tree.net ------------------ Your fly might be open (but don't check it just now).