Username and Password support

What error message do receive?

>-----Original Message-----
>Looking for help:
>
>I was working with a phone technician from BellSouth
FastAccess DSL on
>setting up a home workgroup to link my desktop (running
Windows XP) and the
>main terminal (running Windows 2000 Professional). After
checking that the
>XP terminal was registered to the HOME workgroup, I was
instructed to change
>the 2000 Professional's settings from a network setting
(which previously
>had not been functioning anyways) to a workgroup setting,
and then to reboot
>the 2000 Professional machine.
>
>On startup I got the same "hit <ctrl> + <alt> + <del>"
prompt that I always
>do that brings me the the "username" and "password"
screen. However, now,
>when I enter the same username and password that I always
have, I am unable
>to log in.
>
>The phone tech from BellSouth assures me that changing
from the network to
>the workgroup should not have affected my login, but as
it stands I am
>unable to login to the Windows 2000 Professional machine.
>
>Any suggestions?
>
>
>
>.
>