How about a Baltimore/DC area group? I live in the south Baltimore area and could probably act as a hub at least initially (ie I have a house and email).
I know that Balto/DC(down to Mannassas?) is considered a metro area and folks commute from Penna in the north. East and west I'm not sure of the ranges but Annapolis is not unusual for day trips and west into Howard county. Obviously these places won't mean anything to you aussies but if folks are interested myemail is briandolgeATyahooDOTcom. Moderator feel free to move or copy this message as you see fit.
See ya soon,
Brian D.