I’m continuing to use the Vassal gaming engine for online boardgames. At the moment I’ve got both three and four player games of Small World on the go as well as a co-operative game of Pandemic. Along with Dropbox to pass the log files (let me know if you want a Dropbox invite as it will give us both a free boost to storage space) and email for discussing the games, it is working out very well.
Mind you, having boasted of my previous victory, I have a feeling I am going to be at the opposite end of the podium for the three player Small World game, which is now coming up to the final rounds.