You should contact an attorney in the county in Illinois where the court is located to have him/her file the motion for you. The sooner this is done the better off you will be. Check out the AVVO listing and take care of this asap.
You will need to retain an attorney to get the motion to quash filed and set a date when you can appear in Will County (unless you want to travel here to file the motion yourself and then retrun again on the court date). Most of us would handle that for a very reasonable fee; you may as well be prepared to try to dispose of the pending case (a DUI?) while you are in town for that appearance. You may call 630-323-2875 for a free consultation.