http://blogs.technet.com/mgoedtel/archive/2007/04/06/opsmgr-2007-installation-notes.aspxI have seen a few pots on some of the Management Community blogs regarding SCOM 2007 supporting Windows Server 2003 SP2 and SQL Server 2005 SP2. Both are supported and I can confirm through my own testing that it installs and runs successfully at thisen-USCommunityServer 2.1 SP1 (Build: 61025.2)