In Internet Explorer 6 or 7, how do I remove a stored password?

Internet Explorer 7

To remove a stored password or other stored information in Internet Explorer 7, follow these steps:

1. From the Tools menu, select Internet Options.
2. On the General tab, under Browsing history, click the Delete... button. You now have several options:

• To delete temporary Internet files (copies of web pages, images, and media that are saved for faster viewing), click the Delete files... button.
• To delete cookies, click the Delete cookies... button.
• To delete the history (the lists of web sites you have visited), click the Delete history... button.
• To delete form data (saved information that you have typed into forms), click the Delete forms... button.
• To delete passwords, click the Delete passwords... button.
• To delete all of the above, click the Delete all... button.
• Click OK twice.
  

Internet Explorer 6

To remove a stored password or stored form data in Internet Explorer 6, follow the instructions below:

1. From the Tools menu, select Internet Options... .
2. Click the Content tab, and then click the AutoComplete... button.
3. To remove stored passwords, click Clear Passwords.
   To clear stored data that you have entered into forms, click Clear Forms.
4. Click OK.

Link: Additional Information on Managing a Web Browsers Cache