[Zope-dev] Zope and python namespaces

I wrote an external method that uses Graphite, Sping and PIL to generate charts, but I ran into some namespace problems. Execution of the external method fails because there is a clash in the namespace between PIL and Zope. PIL has a module "ImageFile" and Zope does as well. Even if I insert PIL's path explicitly as the first entry in the path, Zope's ImageFile is still being used. How can I resolve this and what is the best strategy to avoid namespace problems here? Roché