How to delete cookies
Via the menu Extra, open Internet properties. On the General tab, click Delete under Browsing History in the Internet Properties dialog box. In the Delete Browsing History dialog box, click to clear all of the check boxes except for the Cookies check box, and then click Delete.
Click on the Tools menu and select Clear Recent History. Set Time range to clear to Everything. Click on the arrow next to Details to expand the list of history items. Select Cookies and make sure that other items you want to keep are not selected. Click Clear Now to clear the cookies and close the Clear Recent History window.
Click the wrench icon on the browser toolbar. Select Options and click the Under the Hood tab and click Content settings in the Privacy section. Click the cookies tab in the Content Settings dialog that appears. Click Show cookies and other site data. To delete all cookies, click Remove all and to delete a specific cookie, select the site that issued the cookie, then the cookie, and click remove.
If you use another type of browser please inform on their website for cookie deletion instructions.