I want to be able to modify the contents of the attached [url removed, login to view] file, which I pulled from a cab package. This is either something you know how to do, or you don't. Should be easy if you do. I can't find the information anywhere, except that I need to buy a certificate, which I am not willing to do. Even if I did buy a certificate, I'm not sure my application would accept any certificate except Microsoft's? My goal is to use modified files that are currently digitally signed by Microsoft in Windows 7.