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You say you're &quot;thinking of renaming the domain&quot;. &nbsp;Unless you have a driving reason to do so, e.g. the company name changed and the upper management demands that it be changed, I wouldn't bother going through the headache and risks.<br />
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If you have to for any reason, I'd name it something relatively generic so you don't have to do it again. &nbsp;E.g. Corp.local, or singapore.local, something like that. &nbsp;If you change it from ABC.local to BCD.local because the company name changed, in a few years you'll probably have to change it again to CDE.local.
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You say you're "thinking of renaming the domain".  Unless you have a driving reason to do so, e.g. the company name changed and the upper management demands that it be changed, I wouldn't bother going through the headache and risks.

If you have to for any reason, I'd name it something relatively generic so you don't have to do it again.  E.g. Corp.local, or singapore.local, something like that.  If you change it from ABC.local to BCD.local because the company name changed, in a few years you'll probably have to change it again to CDE.local.

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This is a mixed Windows 2000 and Windows 2003 AD Mixed domain. I am thinking of renaming domain. Should I promote the 2000 DC to 2003, and then rename OR can I straightaway rename it?
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This is a mixed Windows 2000 and Windows 2003 AD Mixed domain. I am thinking of renaming domain. Should I promote the 2000 DC to 2003, and then rename OR can I straightaway rename it?

How to rename AD Domain?

The Microsoft Server topic includes all of the legacy versions of the operating system, including the Windows NT 3.1, NT 3.5, NT 4.0 and Windows 2000 and Windows Home Server versions.

Microsoft Server OS

Windows Server 2003 was based on Windows XP and was released in four editions: Web, Standard, Enterprise and Datacenter. It also had derivative versions for clusters, storage and Microsoft’s Small Business Server. Important upgrades included integrating Internet Information Services (IIS), improvements to Active Directory (AD) and Group Policy (GP), and the migration to Automated System Recovery (ASR).

Windows Server 2003

Windows 2000 is an operating system for use on both client and server computers. It is the successor to Windows NT 4.0, and is the last version of Microsoft Windows to display the "Windows NT" designation. Four editions of Windows 2000 were released (Professional, Server, Advanced Server, and Datacenter Server) that shared a core set of features, including many system utilities such as the Microsoft Management Console. All versions of the operating system support NTFS 3.0, Encrypting File System, as well as basic and dynamic disk storage. The Windows 2000 Server family includes support for Active Directory services, Distributed File System and fault-redundant storage volumes.