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For your upgrade follow this steps: <a href="http://blogs.dirteam.com/blogs/sanderberkouwer/archive/2010/05/26/transitioning-your-active-directory-to-windows-server-2008-r2.aspx" rel="ugc">http://blogs.dirteam.com/blogs/sanderberkouwer/archive/2010/05/26/transitioning-your-active-directory-to-windows-server-2008-r2.aspx</a>
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Yan can also use the official Microsoft Upgrading Active Directory Domains document from the <a href="http://technet.microsoft.com/en-us/library/cc731188(v=ws.10).aspx" rel="ugc">Microsoft Technet library</a> or the <a href="http://go.microsoft.com/fwlink/?LinkId=178585" rel="ugc">download version</a> of the document.
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I wanted to get assistance on the best way to upgrade a domain from Windows 2003 to Windows 2008 R2.<br />
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I have 2 win2k3 domain controllers. &nbsp;I was planning to setup a couple of Windows 2k8 R2 servers to replace the existing Win2k3 domain controllers.
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I wanted to get assistance on the best way to upgrade a domain from Windows 2003 to Windows 2008 R2.

I have 2 win2k3 domain controllers.  I was planning to setup a couple of Windows 2k8 R2 servers to replace the existing Win2k3 domain controllers.

For your upgrade follow this steps: http://blogs.dirteam.com/blogs/sanderberkouwer/archive/2010/05/26/transitioning-your-active-directory-to-windows-server-2008-r2.aspx

Yan can also use the official Microsoft Upgrading Active Directory Domains document from the Microsoft Technet library (http://technet.microsoft.com/en-us/library/cc731188(v=ws.10).aspx) or the download version (http://go.microsoft.com/fwlink/?LinkId=178585) of the document.

Upgrade from Win2k3 to Win2k8

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 2008 and Windows Server 2008 R2, based on the Microsoft Vista codebase, is the last 32-bit server operating system released by Microsoft. It has a number of versions, including including Foundation, Standard, Enterprise, Datacenter, Web, HPC Server, Itanium and Storage; new features included server core installation and Hyper-V.

Windows Server 2008

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).