internet explorer question

Somehow I have gotten an unsolicited url for a certain search url as my home page and I cannot get it out. I have gone to internet properties and changed home page url back to yahoo, deleted cookies, cleared all temporary files and cleared the history folders
yet when I reset the machine, this unwanted url returns as the home page.

any suggestions please ?

Get yourself a free copy of AdAware and Spybot Search & Destroy. and clean all the spyware off your computer.

Many Thanks Fear Itself, am downloading them as I speak

Retief: A Keith Laumer fan?