When you play TCP/IP you can't expect someone to just join.. since there is no world server (other than the zone which is just a bunch of servers on a chatroom basically), you have to use a program like Qtracker to post your game that others can "see."
Try this site, in addition to the zone:
http://qtracker.stomped.com) QT is free, and there's no extra plug-in's or membership to download, just the program and some mapshots if you want. Real easy to use.
Other than that you'd have to find somebody in chat or on ICQ that has JK or MOTS, and tell them your IP and then fire up the game (or vice versa) so they can join.
Kurgan
[This message has been edited by Kurgan (edited May 06, 2000).]