Assuming everything is configured correctly in the domain - particularly dns, your
computers will receive Group Policy from another domain controller after that dc is
removed from the domain. To test it out you could temporarily shut down that dc, make
a Group Policy change on another domain dc, run secedit /refreshpolicy machine_policy
/enforce [or user_policy if appropriate], and then reboot that workstation and run
gpresult on it to see if new policy applies. Running netdiag [part of the free
support tools] on that workstation while logged on as a domain administrator should
show all the domain controllers in the domain in the dclist test. -- Steve
http://support.microsoft.com/default.aspx?scid=kb;en-us;321708