Open Internet Explorer 7.

From the Internet Explorer 7 command bar, choose Tools then Internet Options and then Delete under Browsing History.

In the Delete Browsing History window that appears, click on the Delete files... button.

In the Delete Files window you will see "Are you sure you want to delete all temporary Internet Explorer files?"

Select the checkbox, then click on Yes to confirm.

The Delete Browsing History window may appear, showing you the progress of the deletion. When this window disappears, all of the files saved (cached) from your Internet browsing activities will have been deleted.

Click Close in the Delete Browsing History window to finish.

Open Internet Explorer 6.

From the Internet Explorer menu options, choose Tools and then Internet Options..

In the Internet Options window that appears, click on the Delete Files.. button, located in the Temporary Internet files area.

In the Delete Files window that is displayed, check the Delete all offline content checkbox.

Click OK.

When the Delete Files window disappears and the hourglass cursor returns to an arrow, all of the files saved  from browsing the Internet will be removed.

Click OK in the Internet Options window to finish.