Here is a link and interesting discuss on doing this if you use comcast. Here is a direct link to their solution webpage. Here is the link to OpenDNS.  I’ve always found it annoying when you get redirected to a comcast search control+ad page, or a bing.com page when you mistype a url. This might be great for basic users, but power users would not l suspect like – you type hotmail.com in IE8 and your browser re-directs you to bing.com with hotmail.com as the first search result.! Now you need 2 clicks to simply get to hotmail.com