To install <i>Boa Constructor</i> on my Win2000 machine, I used <a href="http://www.python.org/ftp/python/2.3.4/Python-2.3.4.exe">Python 2.3.4</a> (the newer versions aren't supported in Boa), <a href=http://prdownloads.sourceforge.net/wxpython/wxPythonWIN32-2.4.2.4-Py23.exe?download">wxPython 2.4.2.4</a>, and <a href="http://prdownloads.sourceforge.net/boa-constructor/boa-constructor-0.3.1.win32.exe?download">Boa Constructor 0.3.1 alpha</a>.  <i>Boa</i> itself is a python program and I made a shortcut to it for my Desktop from its installation directory.  For me, it was installed at <code>C:\Python23\Lib\site-packages\wxPython\tools\boa\boa.py</code>.