The elected Club Executive meets once a week to discuss upcoming events and generally make the Club run as smoothly as possible. Sometimes this involves mostly putting out fires, and sometimes it involves far-ranging philosophical discussion. If you would like to attend an Exec meeting you can do so, but please realize that these people are pretty busy, so don't interrupt. If you have something to present, talk to the President before the meeting so it can be scheduled. If you just want to renew your Membership, probably this can be done without interrupting the meeting.
This year fall session, (Seot-Dec, 2010) the meetings are in the Clubroom at 12:30 -- 13:30 on Wednesdays.
If you're interested in what the exec does, you could also check out the exec reports.