Running SBS 2008 with Exchange 2007- Need to change Active Directory Server and Global Catalog Server. No option in the Exchange console to make change. Currently pointing at a server that is being taken down and services won't start while pointing at that server. Thank you

See http://exchangeserverpro.com/how-to-use-a-specific-domain-controller-in-the-exchange-2007-management-shell

Another method: Set-Exchangeserver -StaticDomaincontrollers <domain controller1, domain controller2> -StaticGlobalCatalogs <GC1, GC2>