In general, The North Atlantic Chapter covers from northern Virginia through Maine, and it includes the Maritime Provinces. We also welcome you lads In Quebec.
It is a large territory, and we have trouble promoting events for everyone. The event nearest to you was a trail ride and camping weekend in Maine (near Acadia National Park) last autumn. We hope to conduct more events in Maine in 2005, but to some extent it's a "pick yourself up by your shoestrings" problem. We need the events to attract people, but we need people in the area(s) to help stage the events.
We have also had some discussions about setting up an event in northern New York state, which might also be closer to you. Welcome to the NAC chapter forum. Let us know where you are and how far you would be willing to travel, and we hope we can provide something for you.