Download and complete Divorce, Child Support, and Maintenance forms from the Illinois Office of the Courts. Prepare the petition: Complete the required divorce paperwork for Illinois, including detailed personal information and grounds for divorce.Download and complete Proof of Delivery forms from the Illinois Office of the Courts. This Easy Form help you make the forms to get a divorce. You can use it if you and your spouse have children together or if you do not. You should mail the divorce papers (Complaint, Summons, and Notice of Initial Hearing) to your spouse's last known address after you file the case. The new Illinois laws allow for a party during a divorce proceeding to relocate if it is in the child's best interest. Once your spouse gets the Notice, they should sign it and mail it back to your server. They can use the envelope the server sent them. Administrative Office of the Illinois Courts ("AOIC").