[Zope] dir in Extensions

I have some python code in various files in a subdir, and I want to be able to access some functions in that module as an External Method in python In python, I use it like 'from SomeFolder.SomeModule import some_func' but in my external method, when I put SomeFolder.SomeModule as the Module name in the external method dialog, I get an error that the Module could not be found even though SomeFolder/SomeModule.py is in the Extensions directory. Is it possible to create subdirectories of Zope/Extensions/ and use the dir.file syntax to access their contents? Thanks, John Hunter