A.K.
Hi D.-
Have you checked out www.meetup.com? There are several mom groups on there for the McHenry Co. area. They are all set to "private", you can read about the group then send an e-mail to the organizer to start attending playgroups/events. I belong to one in Woodstock now, so I dropped out of the CL and Mchenry groups but both were AWESOME groups to be in. They have lots of activities and playgroups and also mom's night out events etc. You should check it out!
Good luck!