rs-232 serial cable
prepare a rs-232 serial cable. attach the 9-pin female connector to the male connector on the switch. plug the other side of this cable to your pc.
hyper terminal
in windows 95/98, launch "hyperterminal", create a new connection, and adjust settings as below:

main menu
launch the new terminal you just set up, and then, turn on the switch.
see the following messages for successful connection.

to enter any of the submenus, simply type the number on the command line.