If you're using Internet Exploder go to the "Tools" tab at the top of the page and click "Delete Browsing History. In the pop-up box make sure "Temporary Internet Files", "Cookies" and "History" have check marks by them, then click "Delete". You may have to re-enter your passwords for the sites you frequent. If you're using Mozilla Firefox click "History" at the top of the page, then click "Clear Recent History" in the drop down box. At the top of the drop down click the down arrow beside "Time range to clear" and select "Everything". Click the check box beside "Cache", then click "Clear Now" and you should be good to go.