My Windows Installer is corrupted. I want to know how to reinstall it. I went to Windows Support : http://support.microsoft.com/default.aspx?scid=kb;en-us;315346&Product=win2000, did all that stuff but system is telling me that service allready exist. Went to Control Panel, deactivate service and still not able to execute the INSTMSIW.exe. Rebooted, still not able. I am close to reformat machine but I would like to fix it instead to restart. Any ideas?