I'm going to York U. for a conference, not a degree. I'll be in town for about three to four days in late October. All my degrees come from the United States of Jesusland.
(Insert inappropriate and off-topic comment here about the vacant look in the eyes of our Idiot-In-Chief. But I digress.)
To get started, we need to find either someone's home and/or a hotel.
Once that is secured and confirmed, then we publicize the hell out of it: forums (like this, tickletheater.com, and others), mailing lists (i.e., groups.yahoo.com), and word of mouth.
Using a questionnaire (to filter out the [relative] weirdos) has been very successful. Josie and I had success by controlling the number of each gender to ensure a (relatively) balanced turnout.
Because you're the local, I imagine you may want to start on this; I've only been to T.O. once (for a week in June 1997, for another conference) and I have no idea where things are.
Keep in touch!