Make up a flyer. If you have a FLGS, ask if you can post it there. Also, post it at you local library. If you have a college/University near, ask to put it up there too. Any place that has a bulleton board, some resteraunts, grocery stores, comic shops, bookstores do. Always ask before you put something up.
To his friend a man
a friend shall prove,
To him and the friend of his friend;
But never a man
shall friendship make
With one of his foeman's friends.