When paying a speeding ticket, who do I make the check out to (in Illinois)?

I recently received my first speeding ticket. I admit that I was speeding and am willing to pay the fine, but the process is confusing me. On the back of the ticket there are detailed instructions on how to mail in the form and payment, but while it says a check is acceptable it does not say who to make it out to. I would call the courthouse, but I don't live in the county where I was pulled over and there is no phone number anyplace on the ticket.