If you mean the password needed to logon locally when starting in Directory Services Restore Mode, check the following KB article:
http://support.microsoft.com/default.aspx?scid=kb;en-us;322672
This will allow you to reset the local admin password prior to booting in dsrm.
Last Wiki Answer Submitted: December 16, 2009 2:27 pm by JennyMack0 pts.
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It can solve all your problem within a few minutes. Importantly,No need to call a technician, no need to re-install anything, and you certainly don’t need to reformat.
it also allows you to reset windows password with with USB Flash Drive or cd/dvd Disk now!!
You want to go here and get this program:
http://www.lostpassword.com/windows-xp-2000-nt.htm
I have used this more than once, and it works like a charm.
Hope this helps.
According to my experience,I think the best way for you is to reset your windows password.
Windows password Recovery 6.0
It can solve all your problem within a few minutes. Importantly,No need to call a technician, no need to re-install anything, and you certainly don’t need to reformat.
it also allows you to reset windows password with with USB Flash Drive or cd/dvd Disk now!!
I remember that it’s web site is :
http://www.recoverlostpassword.com