I seem to have been infected with a hijacker called 'Searchmaid'. (I have Windows XP Home). I can't get rid of it with AVG, Spybot, Adaware of AVG. I turned off System Restore and manually deleted the entries in the registry but it keeps reappearing and re-setting my browser settings and flashing up ads. for spyware destroyers and so on. How can i get rid of this pest please?