everytime I navigate to a new page, an unwanted international website pops up. Sometimes it opens 4 or 5 new pages and each one says "explorer cannot display the page". It has become quite the nuisance. Changing security settings has not stopped it and anti-virus and anti-spyware have found nothing. What am I missing? Is there a way to stop this site from popping up 5 times everytime I try to view a new page?