Never heard of it, but it seems it has possibly been bundled inside the installer for another software package and installed without your knowledge.
From the site linked below: "
It is advised to always read the Terms and Agreements before installing software on your computer. Never click too fast thru the installation process [Next] button of software as you will agree to software you might not want to install."
More info here:
http://www.fixyourbrowser.com/how-to...-instructions/
If you're not confident with their fix, I suggest visiting a local PC store for help.