Of course, Internet Explorer 9 will not install automatically, but because it is flagged as an important update and the check box is selected, you will be automatically prompted to install it unless you continually clear the check box.
If the check box remains selected, you will see a dialog box that offers you the choices of Install, Ask Me Later, and Don't Install, as shown in Figure B.
The ability to manage deployment of updates, including Internet Explorer 9, is built in.
Before I get started, I need to clarify my comment about the inadvertent installation on Internet Explorer 9.
You'll then find the following four files in the folder that you selected: The Group Policy Administrative Template is designed to allow Windows administrators to use Group Policy to centrally manage the blocking or unblocking of the automatic delivery of Internet Explorer 9 across various systems in their environment via the Group Policy Object.