[Zope] Acquiring/accessing a dotted name

I have a Python (Script) object which needs to return the rendering of a page template called 'foo.html' return context.foo.html() will obviously not work. What will? I have tried various forms of the aq_acquire() call, but context does not seem to implement this. Importing the Acquisition module is not allowed--and it doesn't feel right to have to create a special security context for it. I must be missing something simple here, and yet it is incredibly difficult to find the answer I need from the various documentation I've looked at. Thanks aathan <Andrew Athan>