I think you mean Jedi Knight (Dark Forces 2).
Yeah, well there are a few places you can play.
The MSN Gaming Zone is probably the biggest place to play, if you're after quantity. www.zone.com
(it's listed under "Action games" Dark Forces II: Jedi Knight)
Jedi Knight.net of course has their server boards www.jediknight.net/servers/jk/
You can use Qtracker ( qtracker.stomped.com
to scan for games that are up, or host/launch your own quickly and easily from it. JKMAG is a group of players that use addons, you might have some luck with them www.jediknight.net/jkmag/
Darkjedi.com has a server board, although it's really tiny. darkjedi.com
You can use ReconDroid (from their site) to scan their server boards to see what games are up.
Massassi.net has a new board or group I think. Check it out. massassi.net
You can also play using TCP/IP (that is, share IP's with people online and setup your own games). Contact people in chat rooms, IRC, ICQ, etc. and setup private games.
I heard Kali had a sizable JK community at one time, but I have no idea, since I've never been on there. It might be free now, I dunno. kali.net
You can also seek out one of the hundreds of clans/leagues/orders that are out there (of varying degrees of quality and activity) that get together and play games and tournaments. I can't vouche for them though, since I've never been in a clan/order.
[This message has been edited by Darth Kurgan (edited March 11, 2000).]