Most likely, but zope.interface on Windows would require Visual Studio 2003. I tried easy_install but couldn't complete it.
The error message that says "Python was built with Visual Studio version 7.1, and extensions need to be built with the same version of the compiler" isn't true. Install gcc (I recommend cygwin, but mingw will also work), and put the following stanza into your distutils config file: [build] compiler=mingw32 (You put "compiler=mingw32" regardless of whether you've installed the cygwin version of gcc or the mingw version of gcc.) After that, builds will just work. In particular "easy_install zope.interface" works, and if you don't have zope.interface then when you "easy_install twisted" it will automatically install zope.interface. By the way, building extensions with mingw32 can in theory cause crashes if the extensions pass C++ iostreams back and forth with the main interpreter. I've never experienced such a thing myself and I'm not entirely sure that it is even possible, since I doubt that the main interpreter uses iostreams. Nonetheless, this is apparently one of the reasons why the Python people don't standardize on gcc, as described in this message: http://mail.python.org/pipermail/distutils-sig/2007-September/ 008255.html Regards, Zooko