How can I get rid of the Babylon searach engine and tool bar which has imbedded itself in FF, and resists all the usual removal methods and cannot be found listed as a file on Vista??

Foolishly I downloaded the Babylon translator, and am now unable to delete its search engine and tool bar, which seem to be imbedded into the FireFox search page. They do not appear on the initial Mozilla search page, but when a value is entered Babylon takes over and provides an 'enhanced' search selection, and the Babylon controlled search bars appears.