"research function" wasn't part of IE7 either, so I don't know where you're getting the notion of a "research function". You have the search box which, obviously, would be used to research a topic. If you want to add to yahoo, bing and ask, click on the the drop down arrow next to the search box and select "Find More Providers". This will open a web page from which you can select additional search providers. To add any of them, click on the "Add to Internet Explorer" button on that page.