I need to do a complete Exchange uninstall or a reinstall but do not know how. We installed and it worked fine but anouther employee screwed up some IIS settings and now Exchange does not work. How do I reinstall Exchange. When I run setup it does not give me an otion for reinstall?? If this is not possible how do I manualy remove exchange 2010. I have mailboxes on the server but they are not being used.