Hi there, I usually use this behavior inside Windows Installer package to disallow users from suppressing vital part of our nested installation packages. For further details go here : http://msdn.microsoft.com/library/default....nt_property.asp Briefly : It's a property set to 0 or 1 inside any MSI based installation package. Editing : You could use ORCA from Windows Installer SDK to edit .msi files then set ARPSYSTEMCOMPONENT to 1 (hidden) or 0 (shown) inside Property table for any .msi files to achieve this at installation. Since it's my first post i would say : Thx for the lot of VERY interesting stuffs found here ! Regards Duns
