installing new server 2003 as PDC - can my old server 2000 be a BDC

installing new server 2003 as PDC - can my old server 2000 be a BDC, or do I have to upgrade to 2003 server
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Lee W, MVPTechnology and Business Process AdvisorCommented:
No, because there is no such thing as a PDC or BDC in an Active Directory domain. Everything is a DC.

You CAN have a 2003 DC and a 2000 DC in the same domain, that's fine - but you have to prepare the 2000 domain using ADPREP before you can add the 2003 DC to the domain - and then you are essentially upgrading to the 2003 version of Active Directory.

You should probably review this links:
Here are some links that should get you going for upgrading a 2000 domain to 2003:

Common Mistakes When Upgrading a Windows 2000 Domain To a Windows 2003 Domain;en-us;555040

Hotfixes to install before you run adprep /Forestprep on a Windows 2000 domain controller to prepare the Forest and domains for the addition of Windows Server 2003-based domain controllers | Windows | How To Upgrade Windows 2000 Domain to Windows 2003 Server
Quote from the top of this article: "Several glossy Microsoft presenters have stated that all you need to do to complete a Windows 2003 Domain upgrade is run ADPREP and then upgrade away.  This may work for very small / simple environments but it is definitely not good advice for most companies.  After upgrading five servers in two unrelated domains and installing many fresh copies of 2003 I can say that I personally would not skip a single step in the process I have developed below."

How can I transfer some or all of the FSMO Roles from one DC to another?

How To Create or Move a Global Catalog in Windows 2000

[If you run Exchange 2000] Windows Server 2003 adprep /forestprep Command Causes Mangled Attributes in Windows 2000 Forests That Contain Exchange 2000 Servers

Windows Server 2003 Upgrade Assistance Center

[If using R2 release of Windows 2003] Extending Your Active Directory Schema for New Features in Windows Server 2003 R2
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