Release SharePoint Software Development Kits are available from the Microsoft Download Centerhttp://blogs.technet.com/wbaer/archive/2007/01/22/release-sharepoint-software-development-kits-are-available-from-the-microsoft-download-center.aspxRelease versions of the Microsoft Office SharePoint Server 2007 and Windows SharePoint Services 3.0 SharePoint Software Development Kits are available from the Microsoft Download Center! Download the Microsoft Office SharePoint Server 2007 and ECM Starteren-USCommunityServer 2.1 SP1 (Build: 61025.2)