We have recently added 2 Windows 2003 servers to a domain. The other machines on the domain and the DNS server are Windows 2000 systems with the latest service packs. I verfied that the W2K3 systems are defined to the DNS active directory (again, the DNS server is a Windows 2000 server). I can log on to the Windows 2003 systems as a Domain Administrator, but I seem to have limited administrative rights. For example, I was able to install SQL Server 2000, but I can't define other network users to the Windows 2003 systems (i.e., when attempting to add domain users to the system, the Windows 2003 servers are only allowing me to access local user accounts, even thought I'm logged in as a Domain Administrator. Is there some incompatability issue with Windows 2003 servers running in a domain controlled by a Windows 2000 server? Is there something I need to set in the security or local policies on the 2003 systems? I appreciate any suggestions you might have.