Load Internet Explorer Engine in Firefox

I primarily use firefox as my browser and I prefer it to using Internet Explorer. However,certain web pages such windows updates are not accessible via firefox.There is a firefox add-on that helps you to load internet explorer engine in firefox. Besides being able to access IE(internet explorer) exclusive web pages, you can do all your work from firefox instead of using both IE and firefox.Web develpers can also see how their pages are redered in both engines by just a click of a button.You can download the add-on from this link. Below are screenshots of what the add-on works.