Vista and Small Business Server 2003: Password/Network Set Up Pro

Hello All:

I successfully upgraded to Build 5565 and was using it without incident for
a day or so. Then, I decided to "add" the computer to my SBS network. After
I added the PC from my server management console and did the client side work
on the Vista PC, it restarted but wouldn't let me log onto the network. In
addition, I am no longer able to log on to the PC locally (i.e., without the
network). I get one of two error messages:

1. The trust relationship between the PC and the network is broken; or
2. The password for local log on is incorrect.

I am now completely locked out of the computer and cannot log in at all. Do
I have any way to "unlock" the Vista PC and at least access it locally? I
suspect if I were able to access locally, I could "re do" the network setup.

Any thoughts?

Thx.
John