|I doubt you made a password reset disk like MS thinks everyone ought to know about. (no one does)|
There are plenty of web pages devoted to how to recover or how to reset a vista password. Pick one and try it.
They are bootable cd's or floppies that can either discover the password or simply reset it.
Be warned that if you have any encrypted folders you may not want to reset it just yet. You may wish to even pay for support. Logonrecovery is both free if you want to wait and for pay if you need it right away.
I support the 'Everybody Draw Mohammed Day'. A religion doesn't deny my freedom.