This document outlines the steps to upgrade Windows Server 2003 to Windows Server 2008. Key requirements include having Windows Server 2003 Service Pack 2 installed with Active Directory, DNS, and the global catalog configured and functional level set to Windows Server 2003. The upgrade also requires a bootable Windows Server 2008 DVD and preparing the forest or domain. The document lists compatible upgrade paths between different editions of Windows Server 2003 and 2008.

1. How to Up-Gradation windows server 2003 to windows server 2008
Main Requirements
1)existing windows server 2003 must be service pack 2
2)active directory must be installed and configured
3)DNS Server Install and configured both zones
4)global catalog enable
5)functional level : windows server 2003
6)full editions of windows server 2008 bootable DVD
7)Run forest prep or domain prep
8) Existing windows O/S
>windows server 2003 standard SP2 to Windows server 2008 standard
>windows server 2003 enterprise SP 2 to windows server 2008 Enterprise
>windows server 2003 datacenter SP2 to windows server 2008 datacenter
>windows server 2003 web SP2 to Windows server 2008 Web