change pwd disconnects remote server

Hello,
I have sql personal server installed on my xp machine and have registered a
remote server called pccm-nt. I have login permissions to the server and I'm
a database user for all of the databases.
I connect to the remote sql server with my windows domain account username a
nd password. When I change my pwd I can no longer connect to the remote serv
er, pccm-nt, I usually have to remove the server and re-register it. Would s
omeone be able to tell me w
hy changing my domain password is causing this conflict?
Thanks,
ChiekoYour security token is now invalid. Logout of the domain and log back in ag
ain.|||Okay,
I'll try that but I think that I did log off and log on again.
Thanks for the help,
Chieko