[Zope] ZODBC DA Fails to show in installed products.

I just installed Zope 2.1.6 and the ZODBCDA (ZODBCDA-3.1.0b2-win32-x86.tgz). After unpacking into the lib tree, ZODBC doen't show as an installed product. I've stopped and started the service, rebooted, etc. There is no entry for the ZODBCDA in product management, thus no way to look at the traceback log. Any ideas? A Newbie to Zope, Russ