I found this at the State of Illinois'
web site :
A vehicle with suspended plates/registration cannot be driven by anyone.
A vehicle's registration can be reinstated when the owner provides proof of insurance and pays the $100 reinstatement fee. Repeat offenders are required to serve a four-month suspension, pay the $100 fee and provide proof of insurance before being eligible for reinstatement.
The reinstatement can be processed by mailing the fee and evidence of insurance to:
Office of the Secretary of State
Mandatory Insurance Division
429 Howlett Building
Springfield, Illinois 62756.
