I was helping someone set up a "chat room" for a website yesterday.  They'd found a module for PHP-Nuke that adds a popup java irc client (pjirc).  I had to modify it a bit to make it connect to a different server.  The version of pjirc it used by default was hardcoded to only use one server.

Originally, I was thinking about having them use DALnet, but after some thought, it made more sense to me to set up a HolosTek IRC server.  That way I could use it for other projects as well, such as OKC by Night, Mark II.  It's set up using bahamut, the ircd that DALnet uses, and ircservices, for NickServ, ChanServ, etc.  I'm still working on tweaking it to work the way I like it.  It's up and running now, though, with two official channels.  For more information, you can visit http://holosnet.holostek.com.  The site is not up yet, as of this writing, but it should be withing a few hours.