I've done some googling, but haven't been able to come up with any hacks or bots for this game. Specifically, I'm looking for something that can (at least) automatically trigger skills on a timer. Of course, anything beyond that would be great, too. Apparently, there's already at least one bot for the game, but it's not showing up via Google.
If you haven't tried KH, it's a free MMO at http://kingdomheroes.aeriagames.com/