Go here to learn about server.cfg files:
http://www.jediservers.com/help_setup.asp)
If you download a copy of the JA + Mod, it includes a server.cfg file but with all the JA+ Mod cvars in it too. It's best to keep mod cvars in a separate .cfg file.
That mod, xMod, and Blademod show duel health stats after each duel, as well as a give you a lot of other options, some useful, some useless, and some bad.