How to remove Ask.com from Firefox

I got very pissed off when I installed bit-torrent software and it automatically changed firefox's default search engine to this filthy creature. After uninstalling and removing anything related to ask.com, I still had one issue: the defualt search engine used for the keywords I put in the address bar was ask.com !! Here is the solution to take care of the last bit of its defilement:

1. Open firefix
2. in the address bar type: about:config
3. in the filter menu type: keyword.URL
4. Change the value to: http://www.google.com/search?ie=UTF-8&oe=utf-8&q=

This is very sad to see a company forces people to use their product. They are blind to see that more people are refering to their products as trojans rather than search engines...