running a script like a daemon

[ivan le magnifique]

Hi there.
I would like to know how to launch a script from the command line (like via
telnet) with the ability to exit the command line without stopping the
thead.
Afterwards I would like to be able to retrieve the id of the thread to kill
it.
I know this is not really Python related since I have had the problem with
Java already ( before my conversion to Python)... but, any idea would be
appreciated.

Thanks :)