Helping people with computers... one answer at a time.
Cookies can be used to save your password, or your logged in state, when you visit some web sites. I'll walk through clearing them.
My computer saves my email password. How can I make it to forget the password. i.e. How can I delete the cookies?
Most saved passwords are saved as cookies; it's by far the most common approach. Web sites do this to avoid forcing you to re-login for every page you visit, or longer as a convenience if you tell it to "save password".
How you delete cookies depends on your browser. I'll walk you through both Firefox and Internet Explorer 8.
Internet Explorer 8
Click on the Tools Menu, and then the Internet Options item:
In "Browsing history", click on the Delete... button:
Click on Delete cookies...
Click on Yes, and your cookies have been deleted.
Click on the Tools menu, and then the Options menu item:
Click on the Privacy tab:
Click on clear your recent history:
In the "Time range to clear" drop-down, select the period for which you wish to clear cookies (choose "Everything" if you're not sure). Then in the details area uncheck everything except Cookies (though of course you can leave checked any additional items you also want to clear).
Click Clear Now and your cookies have been cleared.