If you are the silly administrator who locked himself out of the Content Manager. Contact another administrator and ask him to help you get back in using the above steps. If you are the only administrator, then you will be required to take some extra steps. First of all, if you lost your password, there is NO WAY to recover it as it is set in one way encryption. In order to reset your account information, login to the MySQL server using a MySQL browser. PHPMyAdmin is a good tool for this. Learn your settings information from the table and try to login again. If you lost your password, you can reset it to "admin" by changing it to the following:
21232f297a57a5a743894a0e4a801fc3
That should fully unlock your account. If you have any more trouble, consider, completely reinstalling the Content Manager software.