unable to logon after windows XP security update

From: dave (anonymous_at_discussions.microsoft.com)
Date: 07/31/04 

Date: Fri, 30 Jul 2004 16:48:28 -0700

Per microsoft request, I update my WindowsXP Home with a
security patch and rebooted. Now I am stuck with "unable
to log you on because of an account restriction" if I
attempt via administrator (Ctrl-Alt-Del" x2 or when I am
at the welcome screen, it prompts me for a password (I
never had one) and tells me "the local policy of this
system does not permit you to logon interactively". I was
able to get into recovery mode but am not sure what to do
once there (I was able to get past Administrator logon
requirements there). PLEASE HELP! Obviously, I am on a
different computer now...