cgi-script for protected websites

[Ulrich Movie]

Hi,
I'm trying to write a cgi-script:
-- people come to my website and make an announcement (name and password)
-- after that, they come again und put their name and password in a form
-- when name and password are correct, they can visit special websites for 
member only

My problem is, that I don't know, how I can handle it, that only the 
"member" can visit the sites.
Does anybody know a python module or a website, where I can study that 
problem?
Thanks for your help.
Ulli

I have python 2.2 on SuSE Linux 8.0
-- 
My email adress is
ulli dot movie aat gmx dot de