How to change the default search engine for the FireFox address bar

Here’s how you do it…

Change the default search engine of FireFox address bar:
With FireFox you can search simply by typing your search terms in the address bar (that’s where you see your current URL). In this case, the default search engine will be used to search.

1. Open about:config in Firefox (if you doing it for the first time, you may have to promise you are going to be careful)
2. Search for keyword.url from the filter box.
3. Double click on this entry. It will open a dialog where you can edit the ‘keyword.url’ string.
4. Change this string to whatever you want it to be:

Read more: http://www.searchenginejournal.com/change-your-default-search-engine-in-firefox-google-chrome-ie

To use Google search, change the string to: http://www.google.com/search?hl=en&q=