RoninGT, I think Vorspire posted something recently that he'd be releasing a basic package for the tournament/battle system, but I don't think he actually has yet. He'll probably chime in with the actual info to this thread at some point.
Ronin is talking about ConPVP, not the VNC battle system. Someone made a tutorial/detailed post on RunUO about the system and how to set it up. I haven't tested it myself though. Apparently the RunUO team uses it to setup a few different kind of events, although no detail is really shared that I know of.