http://blogs.msdn.com/tadd/archive/2009/07/09/what-guid-is-that-feature-in-the-window.aspxCheck out Robert’s post at http://www.thorprojects.com/blog/archive/2007/05/16/list-of-features-with-guids.aspx for a quick list of which GUID links to which feature within your MOSS Farm. In addition, StefanG has a tool on msdn ( http://code.msdn.microsoft.com/WssAnalyzeFeaturesen-USCommunityServer 2.1 SP1 (Build: 61025.2)