Yes, it is. When you try to install SQL Server, Windows Server will produce a warning message telling you to upgrade to SP3. You should still be able to complete the installation. You should then apply Service Pack 3 and the MS03-031[^] security patch. If you decide to apply this patch you should also consider applying the patch in KB 826161[^] to your Enterprise Manager installations. This patch fixes an issue where Enterprise Manager prompts for a new password when you make changes to a SQL Server login. See also the KB article "Windows Server 2003 Support for SQL Server 2000"[^]. Stability. What an interesting concept. -- Chris Maunder