This utility is only to be used if you wish to permanently uninstall FavesSoft programs that use the Registry to store settings and data. It just deletes the FavesSoft key under HKEY_CURRENT_USER/Software and all the FavesSoft subkeys.
Some FavesSoft programs that use the Registry for settings are: FavesSA, XMon, CommentConfig, Tray.
Most programs only store the position of the program on screen and the window state. However FavesSA stores data such as the FileManager program configured to work with it.