Session Management with Mod_Python

Hey thanks in advance for the help,

I've been trying to get sessions workin for a web app that i'm working on but can't seem to get it to pass values on. So i've got a few questions.

1. I know upon the word 'session' in your code a session object is created. To reference that session do you simply call it session? b/c wouldn't that then start a new session? Or do you need to write a:
sess = session()
type of line?

2. when assigning values to a session is this the correct syntax?
session['username'] = str(response.getfirst('username')

3. Is there anyplace special ie httpd.conf taht you need to alter to allow for sessions to be stored? because I can't seem to find any of the session files on my HD.

thanks hopefully this might make my headache go away!!

brad