http://blogs.msdn.com/pusu/archive/2009/06/19/how-do-you-detect-if-running-os-is-windows-7-or-not.aspxRecently I need to write some codes to disable one feature on Windows 7 for an application. For Windows 7, its major number is 6 and minor number is 1 (see this link http://msdn.microsoft.com/en-us/library/ms724832(VS.85).aspx ) and thus we can compareen-USCommunityServer 2.1 SP1 (Build: 61025.2)