They do exist and were available on the Vassal site before being taken down at presumably SJG's request for copyright protection reasons. I don't believe I have it anymore, though I did play around with it, I never actually got a game going with it. Maybe someone will geekmail you a discrete source.
Do you know of any alternate resource to play via virtual tabletop, etc?
I was rather hoping to play via VASSAL / Teamspeak with some people across the country - then I saw the notices on the VASSAL site.