Does anyone know how to make Google the search provider for firefox?

I recently installed the megaupload toolbar and since then, whenever I type in things in the address bar for mozilla, I get redirected to a Yahoo search. Before, if I typed in something like wikipedia, I would go directly to wikipedia. I uninstalled the megaupload toolbar, but whenever I type things into the address bar, I still go to a Yahoo search site. Any ideas on how to get rid of this and make it go back to normal? Thanks in advance.

search for: Google Hot Bar for Mozilla/Firefox.

It will stick the google search bar right on your navigation toolbar.

you should be able to click the drop down box in your browser and change the web site.

Go to the top of your Firefox browser. Click on "Tools". Click on "Web Search". On the left of the highlighted box you should be able to choose Google. Just leave it on this setting and whenever you want to search just click on these again or click "Ctrl + K" which will highlight this search box. That's it!

Type about:config in the address bar, hit enter. In 'Filter' type 'Keyword.url'....then double click it and replace with.....
http://www.google.com.my/search?q=