Trick to Change your Default Search Engine in Mozilla Firefox

Open your web browser and in the address bar type about:config (better to copy/paste it) and a window will open. Click on I will be Careful, I Promise button.   




* just type keyword.url in the Filter Box

 

 Now it will ask you Enter String Value:-


For Google: http://www.google.com/search?ie=UTF-8&oe=utf-8&q=

For Bing: http://www.bing.com/results.aspx?q=

For Yahoo: http://search.yahoo.com/search?p= 




 

AND CLICK OK RESTART THE BROWSER AND ITS DONE

!!!! ANY PROBLEM PLEASE WRITE IT IN THE COMMENT SECTION AND I WILL
SOLVE IT !!!!