How do I edit a Windows ISO and keep it bootable? I want to edit a few things on there, and add a driver folder, and programs folders. Do I use ImgBurn or UltraISO? Also how do I go about doing it. I am also using it to edit the ei.cfg in my Win 8.1 disc so it will grab my cd key from the BIOS because murphy's updated disc asks for a retail key. Thanks.