The new “Firefox with Bing” firefox browser sets Bing set as your home page and the default setting in the search box and AwesomeBar (where you can also type in queries as well as Web addresses). If you already have the latest version of Firefox, then you just need to download the Bing Search for Firefox Add-on to set the same preferences. There are nearly 20 customized versions of Firefox distributed globally by partners including Bing, United Internet, Twitter, Yahoo! and Yandex
Firefox with Bing