There's a forum called Gamers Seeking Gamers (which I'll move this to for you) and a link to "Find A Game!" in the main navigation bar on every page which takes you to the gamer search database:
I'm looking for a 3.5 or 5th edition game that's in the Kansas City, Saint Joseph, Missouri area. I'm 27 and fairly experienced. I'm hoping to find a pretty relaxed atmosphere (I don't mind a adult language I use it myself)