No it's not. ConfigurationSettings.AppSettings() does not look in the machine.config file anyway. It will look in the applications config file, which should have the same name as the .EXE file with ".config" appended to it. For example, if your application's .EXE is called MyApp.exe, the corresponding configuration file will be called MyApp.exe.config and reside in the same directory as the .EXE. This is the only file AppSettings will look in. You can find more on these files on MSDN here: Machine Configuration Files[^] Application Configuration Files[^] RageInTheMachine9532 "...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome