EDI User Groups in Chicago

Does anyone have any information on EDI user groups in the Chicago
area?  I'm currently looking for a group that would help me extend my
knowledge in the EDI field, and was told that user groups would be my
best bet (outside of being trained at a job).

If there are no groups in this area, then I would ask if anyone would
know where I could be trained or where I could learn the ins and outs
of mapping.  I've been in EDI support for over 4 years and have spent
the majority of the time working the communication end of things
(Cyclone, VAN work..etc).  I'm currently looking for a new job, and
would really enjoy increasing my knowledge and experience to help out
there and plus, I know the concept of mapping, just have never had a
hands on approach to it yet.

Thanks in advance,
Lauchlin