Deleting Internet Explorer's entire History list
Here's how to delete Internet Explorer's entire History list:
Open Internet Explorer.
Choose Internet Options from the Tools menu.
Click the "Clear History" button.
Internet Explorer immediately "forgets" the sites and pages you've visited.
To stop Internet Explorer from keeping the list altogether, continue to step four, below.
Set the "Days to keep pages in history" setting to "0".
Deleting individual entries from the History list
If you'd like to keep the History enabled for convenience sake, you may delete individual sites from the History by doing this:
Open Internet Explorer and click its "History" button.
Right-click the individual site you'd like to purge and select Delete from the pop-up menu.
Choose Yes to confirm the deletion