Thanks for the links, but they are still not basic enough, because even the editor seems to work different to what I know from Lite-C or that what I've seen of C++.

What do I have to do, when I get a window called Python Shell with this contend?
Code:
Python 2.5.2 (r252:60911, Feb 21 2008, 13:11:45) [MSC v.1310 32 bit (Intel)] on win32
Type "copyright", "credits" or "license()" for more information.

    ****************************************************************
    Personal firewall software may warn about the connection IDLE
    makes to its subprocess using this computer's internal loopback
    interface.  This connection is not visible on any external
    interface and no data is sent to or received from the Internet.
    ****************************************************************
    
IDLE 1.2.2      
>>>