Well, we have a chat server for our own use now. It is an IRC server with a web interface, for those who don't want to bother with using a full blown IRC client.
The web interface is here:
http://www.utahwrimos.net/pjirc/If you have an IRC client, click here: irc://irc.kydance.net/nanowrimo
Kydance.net is my business domain, and since the IRC server may see uses for my business as well, I figured I'd stick it there.
For those unfamiliar with IRC, once you log in through the web interface, all you really need to know is that to change your name from Guest?? to whatever you want, you just type '/nick <whatever>'. For example, if you wanted your name to be Foobar, you would type '/nick Foobar'.