[Zope] where to install rtf2xml script to work with Zope and TextIndexNG?

Hi all, Where should I install rtf2xml script, or will python setup.py install take care of that? My setup: zope 2.8.5 windows XP Pro Should I install it under Zope "Products" or under Zope "Extensions" ? Ultimately this script is for use with TextIndexNG(3, I hope) which I have not installed yet. I am being guided by event.log errors from an old installation of TextIndexNG under Zope 2.7.8 (that was bundled with the windows installer of Plone 2.1.2). Thanks, Owen