Windows Installer 3.1 en Administrator permissions are required to install Windows Installer 3.1. Contact your administrator. Installation of Windows Installer 3.1 requires Windows 2000 Service Pack 3 or later. Contact your application vendor. Windows Installer 3.1 is not supported on a 64-bit operating system. Contact your application vendor. A failure occurred attempting to install Windows Installer 3.1. http://go.microsoft.com/fwlink/?LinkId=49256