Follow these steps to start the messenger client
Open Config.txt supplied with Chatter-jee.exe in a text editor.
Put the IP address of server machine in the file as IP_ADDRESS=<ip address>
Put the Port number as PORT_NUM=<portnum>
Run Chatter-jee.exe
In case of any problem, follow the instructions on this page.
http://shirishart.tripod.com/software/chatterjee/startingup.htm
and look for Starting the Client.
Follow the left side links to know various aspects of using the syetem.
I hope this guide is useful. In case of any doubts or suggestions, contact me.