To the OP's original question, under Windows Updates, there is a link to "Get updates for other Microsoft products." Click on Find out more.
When I click, I get a generic browser window with instructions to find Windows Update in Control Panel. That is because we don't allow other updates by policy where I work. However, TechNet says that it should allow you to go to Microsoft Updates so you can install the control to allow other MS products to be included.
Or, if you aren't getting those updates, just leave it off (which it should be by default.) I think that once you enable it, you can't go back.