You are planning to deploy Windows Essential Business Server 2008 onto your existing domain. Before installing EBS 2008 you need to run the Preparation and Planning tools, which would help you prepare your environment and plan for deployment. If your existing domain has at least 1 or more Windows 2000 Servers which are DNS servers then the tool might report the following error: “DnsConfig – A connection cannot be made to the WMI provider with a scope of \\Win2kDNS.contoso.local\Root\MicrosoftDNS and a path of MicrosoftDNS_Sever”

More info: EBS Blog