[Mailinglist] Making the server listen ! (on a port of my choosing)

[Mailinglist@ilug-cochin.org]

Dear members,
                    How do you make the Linux box ready to listen on say ports 
9888
and 4000 for tcp-based client programs ?
                JJ said that I have to edit the /etc/services ,
But ,  this is how the file looks :

telnet   23/tcp   #___
           9888/tcp   #This is my entry

What can I give as the first field ? a.out or bash ?

Please guide me on this .

Warm regards.
([EMAIL PROTECTED])
Shyam