|Well if you tried to remove it from "add & remove programs" and it still exists so,|
you should remove them manually
click on the arrow of the search engine box (you can locate it right the navigation bar of the browser) then click Manage Search Engine then click on "Freeride Search" tabe then remove.
For Google Chrome:
click on the setting button also right the navigation bar then click Options and then Manage Search Engine and then remove "Freeride Search" from their.