If there\'s a local gaming forum, I\'d start there. A simple post with your ideas and asking who\'d be interested in such an adventure is all you\'d need to start things off. You can also find out about areas to game, maybe join another established club and offer to host some game nights (a lot of the time gamers are aching for a place to play so they may want a 2nd or 3rd place to go) AND you might get some advice from others who\'ve done clubs in the area or ask interested parties for their ideas/opinions, etc.
More likely than not, if you want to organize some games on a regular basis, whoever owns the site would give you your own sub-forum to use. Once they know you\'re serious anyway. They may want a few bucks for their efforts and for the traffic under this new sub-forum, which would be minimal, hopefully. Obviously, you\'d have to see what they think, but I\'ve seen that done on many websites for many different things of this nature.