Modules Communicating

Hi!
I am writing my own module that handles all incoming requests. In some cases, I want this requests to be handled by mod_python which I installed. In this cases, my module should change the requested file extension to .py, which is configured to be handled by mod_python.





I have tow questions:

1. How can I set the modules order, so my module will handle the request first, change its url, and then mod_python will handle it?

2. Which field in the request_rec I should change so it will take effect? I tried to change the URL key in subprocess_env table, but the request was not handled by mod_python.





Thanks