Deploy Service Pack 2 (SP2) for Office Project Server 2007 describes how to deploy SP2 for Microsoft Office Project Server 2007, which is included in 2007 Microsoft Office Servers Service Pack 2 (SP2). The article explains how to update a basic installation and a farm deployment, as well as language packs. Guidance and recommendations are given for successfully completing the process. Included are links to the SP2 download sites as well as informative Knowledge Base (KB) articles.
The TechNet article published 4/29/09 shows the version number for Project Server 2007 SP2 as 12.0.6425.1000. The correct number is 12.0.6422.1000. This is being updated and will appear in the article when published next week.