The most simple explanation is:

Apply through IDFPR. $150
Wait 6-8 weeks for a response.
If approved you are referred to register for the exam:
NBCC $275
Continental Testing $98
Schedule your exam @ Pearson VUE
Illinois Testing Pearson VUE
Wait 2-4 weeks for license from IDFPR
Active Duty Military and spouses expedited process.

 Am I Qualified to be a Licensed Counselor.ppt

 Academic Flowchart.xls
 Application Process.xls

 Experience Flow Chart.xls