The Illinois Secretary of State (SOS) is initiating a no-match insurance verification program for vehicle owners. Caution: If you don't return Form W-9 to the requester with a TIN, you might be subject to backup withholding.See What is backup withholding, later. The Electronic Registration and Title (ERT) System allows you to complete and print an Application for Vehicle Transaction(s) (VSD 190) online. Offices. Illinois Department of Insurance 115 S. LaSalle Street, 13th Floor Chicago, IL 60603 (312) 814-2420. We have the best patients! Illinois Legal Aid Online provides a guided interview called an Easy Form that will help you fill out the forms. Forms on this website are PDFs with fillable fields. Forms should be downloaded to your computer before filling in the fields. Use this form to authorize Blue Cross Blue Shield of Illinois to disclose your protected health information (PHI) to a specific person or entity.