Hi Chris,
PACCIN includes and connects all kinds of individuals and organizations. As an "information network" that is our forte. Mountmaking as a specific discipline within the overall culture of preventive conservation is represented on the PACCIN website's forum but many members (myself included) are also members of the google group IMF - International Mountmaking Forum
http://groups.google.com/group/mountmaking-forum
For related links check out information on the AIC wiki mountmaking page -
http://www.conservation-wiki.com/wiki/Mountmaking
Glad you are on board and I hope you enjoy visiting with colleagues at the next event in your area!
Ashley