I have a Windows 2000 domain with two domain controllers,DC1 and DC2 both running Windows 2000 Server. In my domain, I have an Exchange 2000 Server running on Windows 2000. I will be replacing hardware on all three boxes as the current servers hardware is becoming obsolete. We plan on installing a 2003 domain "DC1 & DC2 along with an Exchange 2007 Server. What is my best and easiest migration path. This will not be a migration on the existing machines but on new hardware and 2K3 software.