When I try to connect to local ports, Computer -> Connect local, using Portmon v. 3.02, I\'m getting an error message, Error 2, in a small error dialog box
Just to test that the hardware is working, you could perhaps boot a Linux live CD and run the statserial and/or minicom program to verify that it works. The Knoppix distribution seems to contain both those programs.
Serial ports on Linux are named /dev/ttyS0 for COM1, /dev/ttyS1 for COM2, etc.