Hi,
I did some research and found some articles:
To remove Active Directory from a domain controller that is the last domain
controller in a child domain, you must provide enterprise administrator
credentials or be a member of the Enterprise Admins group.
Removal of the Last Domain Controller
=================================
The following operations are specific to removing the last domain
controller in the domain. If any operation fails, domain controller
demotion cannot proceed.
Checking that no child domains exist. If none is found, Active Directory
removal proceeds.
Location of a source domain controller in the parent domain and connecting
to that source domain controller in order to replicate changes.
Removal of Active Directory objects from the forest that are specific to
this domain. The wizard contacts the domain naming master and removes the
NTDS Settings and cross-reference objects.
Removal of trust objects on the parent server. The trustedDomain objects in
the System folder are deleted.
Placement of the server in a workgroup called "Workgroup."
For more information look at
http://www.microsoft.com/windows2000/techinfo/reskit/en-us/default.asp?url=/
windows2000/techinfo/reskit/en-us/distrib/dsbg_dat_NODT.asp
Thanks,
(e-mail address removed)
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