Firefox extension which runs IE rendering engine
thought this might be of interest ..
Check out https://addons.mozilla.org/en-US/firefox/addon/1419
Its an extension to Firefox which allows you to change the rendering engine used within a tab. That means that if you have a page which only works with IE, just change the engine and away you go. Within the extension you can tell it to check Microsoft for updates to IE, so its always current.