domain and administrator problems

From: John Henderson (spydurman43_at_aol.com)
Date: 07/29/03 

Date: Tue, 29 Jul 2003 03:20:00 -0700

 I have been trying to get in to windows update, but it
won't let me because it says iI need to pick a different
domain name, password, but nothing seems to work. Can
someone tell me how to change or add addministrator names
so I can use windows update.