something took control over firefox…

something took control of my firefox.. it used to be a google search here now its something else
here is how it looks:
http://~ Disallowed image host ~/219e42c.jpg

i don’t remember it’s name.. i removed it from “add remove programs” but it looks like it still in my computer…
what shall i do?
Answer #1
You prob install some program that has a small page where you didnt read and click accept.
Use revo uninstall or total uninstall to see if there anything left in it. After that do a scan. Change the setting on firefox back to google. Also check firefox addon.
Answer #2
what is revo uninstall?
Answer #3
Its a uninstalling program.
Search for them on this forum.
Answer #4
Give your PC a clean with Spyhunter 4..
http://www.google.com?t=11350342&highlight=
Answer #5
Run Malwarebytes with updated definitions in Safe Mode.