Newbie: Application Question

Hi,

I have written a small application in Python which seems to run ok,
however I need to make sure that it continue to run even when the
screensaver kicks in - at present it seems to go to sleep. Is there a
way to ensure an application always runs? At the moment it is simply a
standard application.

I am also learning Cocoa and Objective-C right now if that helps.

Thanks in advance.

rod