Hm.. some ideas to promote the community as whole..
like at LAN, make an announcement about the WoW and GW Guilds and who to contact if they want to join.
Also, promoting the forums.. make a small flier to hand out to attendees, mention it so often during the LAN. (Wearing club shirt at LAN will help as well)
And whatever ideas we can employ.. hopefully more suggestions can come up during the actual meeting.