XP workgroup password nightmare

From: Fec (fec_at_fec.com)
Date: 01/14/05 

Date: Fri, 14 Jan 2005 16:36:47 -0000

I have a xp pro client which is usually connected to a local domain. I have
removed the log-on to the domain & configured the pc to log on to a
workgroup instead. However, the user name & password I entered when changing
to the workgroup (in system properties/computer name/change) is not being
recognised & I cannot log in!!! NIGHTMARE

Even the admin password is not recognised. I suspect the pc is defaulting to
an old user name/password combination from when it was on a workgroup in the
past. I have had similar experiences previously with the same thing - but in
all other instances I have figured out the old passwords.

How do I re-join the domain - remember, i cannot log in to change this in
the usual manner.

Regards

Fec