Credentials manager in Windows XP

Trying to fix worng password in credentials manager on a Windows XP laptop:


http://www.techrepublic.com/article/manage-user-credentials-in-windows-xp-with-the-stored-user-names-and-passwords-tool/

http://www.techrepublic.com/article/step-by-step-maintain-your-passwords-with-credential-manager/