Parenting Topic - Playgroups for Kids

Are there any parents out their interested in starting a playgroup in your area? Have you done any research as far as Web sites that are already established for setting up playgroups? Do you know of any sites that have established playgroups for the Long Island, NY area. If so, please provide details, or provide comments if you are interested in joining a Long Island playgroup, i.e. age of your children, location, etc.