This is my friend´s computer, Sony Vaio, Win XP (Pro), SP1, Pentium M 1.5 GHz, 512 RAM, Avast. He cannot get to windows update page. Ran adaware (updated), Spybot 1.4 (updated), found problems and fixed them, ran avast, found four viruses. Zonealarm Pro and norton virus were not functional, so removed them, and installed avast and zone alarm free. Still not working. Shall I post a hijack log? Many thanks for your response.