How to change my search engine?

I don't know how it happened, but my default search engine of the Firefox address bar has been changed to "questbasic.com" from "Google". So, I changed it using " about:config --> keyword.URL --> http://www.google.com/search...

i know how to change my home page but not the search engine i accidentally changed it to ask when i was installing limewire and i forgot how to get it back i need search engine not home page

ok my internet started with live search but i prefer google so i looked it nd and i changed it and set the default to google and deleted live search but when i opened but my other tab it was still there and google was just a tiny box next to the url...

How do i change the search engine for mozilla firefox? It changed my search engine and now i dont get the results i want. How do i change it back to google?

i downloaded an add on and it changed my default search engine to some inbox search engine I want to change it back to yahoo

OK, now here's something that's puzzling me. A while ago I seem to have changed the default search engine on my pc from Google to Conduit. I'm not quite sure how it happened but I've decided I don't like this search engine and would like to go back to...

So apparently while downloading some crappy freeware app, I managed to leave a box checked that installed an ask.com toolbar (which I uninstalled) and changed my default search engine to ask. So whenever I type a word into my address bar it automatically...

I had google chrome as my search engine, but after downloading something it has hijacked my search engine. Iv'e tried going on to the settings and it is saying that google is my search engine, but it's not, it appears to be a lookalike of google but...

I accidentally changed my search engine to Yahoo, but I want Google to be my main search engine. How do I change it back?!