The Cook County Circuit Court has published instructions for filing a petition for appointment of a CI on their web site. To view this material go to:
http://www.cookcountycourt.org/divisions/county/pdfs/PetitionforAppointmentofaConfidentialIntermediary.pdf

The site begins with the forms and the instructions start on page 6.

A form to ask the Court that you not be required to appear before the Court is available at: http://www.cookcountycourt.org/divisions/county/pdfs/MotiontoWaiveAppearanceatHearing.pdf