To deploy the Screwdrivers client through an ActiveX control on a webpage, you will need to add a few lines to the html page you want your users to go to in order to install the client. Here is the OBJECT definition to add to your html file, remember to replace the filename.cab with the file you download:
<OBJECT ID="Screwdrivers v4 Client" CLASSID="clsid:050A3800-6C03-48a5-A6D7-14CCF18A700D"
CODEBASE="filename.cab#version=-1,-1,-1,-1">
</OBJECT>
When a user logs in to the webpage, they will be prompted with the following dialog:

Clicking on this dialog and selecting 'Install ActiveX Control' will silently install the Screwdrivers client for the user.
HTML OBJECT Tag Information
Simplify Printing
Deploy the ScrewDrivers Client