ActiveX controls aren't 'installed' for SE....They are installed OS wide. Usually you'll have an OCX file that you can just double click on and it will install itself in the OS registry. Then on SE, you can add it via the Objects, ActiveX menu. You'll be presented with a list of all ActiveX controls registered system wide. You can also use this dialog to register an OCX using the REGISTER button if it isn't already installed on the OS.