I am working on automation project in which we are installing the Windows OS on client machine with the help of different OS packages available on server. While installing Windows XP/2003 we are checking for the OS installer packages to get the difference between x86 and x64 architectures. e.g. x86 package contains - I386 folder and PRODSPEC.INI file. and x64 package contains - I386 folder, PRODSPEC.INI and one additional folder AMD64 Is there any such specific folders or file for Windows 7installer package, by using which we can identify that this is for x86 or for x64? Thanks, Jaydeep.