Hello, I'm trying to figure out how to produce a Windows installer for pure-Python packages such that it will "just run" on a 64-bit Windows platform. I'm running a 32-bit Windows (Windows 7 Pro), and the msi produced by python setup.py bdist_msi works just fine on Win 7 Pro. I don't have a win64 platform to test on. The distutils docs for Python 2.7.1 say: ""In most cases, the bdist_msi installer is a better choice than the bdist_wininst installer, because it provides better support for Win64 platforms, allows administrators to perform non-interactive installations, and allows installation through group policies.""" but give no more detail. Running python setup.py bdist_msi --help produces only one item of interest: Options for 'bdist_msi' command: --plat-name (-p) platform name to embed in generated filenames (default: win32) Does the win32 version work on win64? Is the purpose of changing the name solely in order that win64 users are not deterred from using it because the name includes "win32"? Cheers, John