Whether your DuPage warrant will be discovered will depend upon why you are in court in Will County on Monday. Some courts will run a check. Others will not.
If it's your first appearance in Will, there's a good chance the state has run a background check. If they did that after the DuPage warrant was issued, then they will be aware of the warrant and there is a good chance you'll be taken into custody. Bring your copy of the Motion to Quash that you filed in DuPage and if you can, bring a lawyer as well. If you have not contacted an experienced criminal defense attorney, you should do so. Most of us provide free consultations. www.galivanlaw.net