How to change default search engine for the FF address bar ?

Once I used AVG antivirus and they choosed themselves as my default search engine, only when typing something else then an url in the address bar, how to get rid on this ?|||go to the search bar and type as followed


about:config


then type in keyword in filter.


then doubleclick on keyword.url then paste the following in


http://www.google.com/search?ie=UTF-8%26amp;oe鈥?/a>


and now u should have google as the search engine