Here's what I've found so far:
You CAN run dedicated from the game, but for those of us who don't have a 3D card in the box, that's impossible. To run a dedicated you have to add the
"+set dedicated 1"
tag to the jk2mp.exe shortcut.
One problem I found is that it still requires the CD when it's running dedicated! Don't understand that one. This is all using Windows 2000 Adv. Server.
If you run a server from the game, you can go into the "base" directory and look for the "jk2mp.cfg" file. This file as a list of the commands it loads. I would say look through that file and find tags. A lot of them are Q3 tags. Need a map list too.