Windows 2000 Pro Acct. Missing?

ok, I'm working on a computer with Windows 2000 Professional installed. When the logon screen appears, I type in the default account name, (there is no password) and it tells me that the account doesn't exist or cannot be accessed (It changes from time to time?) I know the guest account is disabled, not that it would do much, but I know there is an Administrator Account on the machine. If only I could access it. I diddn't think it had a password, but it's not allowing me to access it. Is there any way of getting into windows at this point? I'd be welcome to any suggestions. Thanks a lot!

-koadmunki

 

http://www.petri.co.il/forgot_administrator_password.htm