[Zope] Z Oracle Database Connection doesn't show up.

I have compiled and installed Python 1.5.1, Zope 1.10.2 - all works fine. I downloded and installed ZOracle DA, following all the steps in the README file. However, I can't get Z Oracle Database Connection to show up in the list of available item types in Zope mangement interface. Any suggestions would be greatly appreciated. Marina Voltchenko.