Windows OS 버전 정보
http://msdn.microsoft.com/en-us/library/windows/desktop/ms724834(v=vs.85).aspx Operating system Version number Windows 8 Release Preview 6.2 Windows Server 2012 6.2 Windows 7 6.1 Windows Server 2008 R2 6.1 Windows Server 2008 6.0 Windows Vista 6.0 Windows Server 2003 R2 5.2 Windows Server 2003 5.2 Windows XP 5.1 Windows 2000 5.0