i'm going to use my forums for monthy LAN partys and want to allow members to have a check box that they can check to RSVP or un-RSVP. To make sure i have room for them i want to have admin option to set the number of seats.
say i set the next LAN to have 20 seats and person 21 tries to RSVP it will tell them all seats are taken.. or.. perhaps put them on the wait list.
there is a perfect working example of how i want it to work at http://carnagge.com if it would help people understand what i'm looking for.