This was the closest newsgroup name to the problem I am having. The application is actually a Windows Service but I think the problem I am having may be familiar to forms developers. I have installed an application with one forms project and two windows service projects that the form controlls. When I was doing a re-install this morning I got a System.IO.FileNotFoundException. Since then I have been trying to uninstall and delete files and remove registry entries and renaming the project files. By this time I think I have completely hosed the configurations and everything related to this solution. Is there any way to remove it all from my installation history and pull this thorn out of my system? I'm on the verge of a melt-down. But I would like the information on how to hunt down all the hooks that have been sunk into my machine. Where can I find this kind of info? Any keywords I should look for?