You may know that Firefox has a very useful method of searching in a document; every time you type text in the search box (edit – find) it automatically searches the word you type. You don't need to click "Find" or do anything else. This is very useful when you want to edit a template in the browser or want to find a word in a large document.Unfortunately, Internet Explorer does not provide this functionality, not even in Internet Explorer 7. Find As You Type for Internet Explorer is an add-on for Internet Explorer 6 and 7 that provides this kind searching functionality. It adds a toolbar to Internet Explorer where you can type search terms, and it will find them, as you type.
Installation - Run setup.exe to install. After installation, open Internet Explorer and press CTRL-F to show the toolbar.
Support - Windows XP, Server 2003 and Vista(x86 and x64)
Details and Download