[Zope] Can we execute an external method from outside of Zope

Hi all, I would like to know if we can execute an external method from outside of Zope. So let's say that I have a script "install.py" and an external method "installer" that refers to it. Can I execute the external method "installer" in a python script from outside of zope ? Can I execute the "install.py" script from outside of Zope but manage to run it as it was under the same context of the external method? I actually want to create a script to install a new product and would like the user NOT to create an external method in order to do this. Thanx for your suggestions, -- Jean Baltus