' Disable a Global Catalog Server
strComputer = "atl-dc-01"
Const NTDSDSA_OPT_IS_GC = 1
Set objRootDSE = GetObject("LDAP://" & strComputer & "/rootDSE")
strDsServiceDN = objRootDSE.Get("dsServiceName")
Set objDsRoot = GetObject _
("LDAP://" & strComputer & "/" & strDsServiceDN)
intOptions = objDsRoot.Get("options")
If intOptions And NTDSDSA_OPT_IS_GC Then
objDsRoot.Put "options", intOptions Xor NTDSDSA_OPT_IS_GC
objDsRoot.Setinfo
End If