title: How do you change file association for .py Python files in XP?
body: <p>When I type <code>assoc .py</code> I get <code>.py=py_auto_file</code>.
  When I type <code>ftype py_auto_file</code> I get <code>py_auto_file="C:\Program Files\Adobe\Photoshop 7.0\Photoshop.exe" "%1"</code></p>
  
  <p>How do I make <code>py_auto_file="C:\Python27"</code>?</p>