I get the impression from the documentation that it should be possible to use distutils to distribute a pure Python package in a form acceptable by the Windows installer. Is this correct? If so, I would appreciate advice on where I've gone astray in the script below. If I enter this line: C:\Program Files\Python23\Lib\site-packages\PyMatrix>python setup.py sdist the expected zip file is produced. in C:\Program Files\Python23\Lib\site-packages\PyMatrix\dist Colin W. ------------------------------------------------------------------------ C:\Program Files\Python23\Lib\site-packages\PyMatrix>python setup.py bdist_wininst running bdist_wininst running build installing to build\bdist.win32\wininst running install_data creating build creating build\bdist.win32 creating build\bdist.win32\wininst creating build\bdist.win32\wininst\DATA creating build\bdist.win32\wininst\DATA\Docs error: can't copy 'copy.html': doesn't exist or not a regular file C:\Program Files\Python23\Lib\site-packages\PyMatrix>