Monitor Screen Times Out & goes Dark

When I download movies from Hulu, my monitor screen turns dark after awhile, and that's the end of my video recording, but audio still works. I have turn off the power management on the monitor it's self. Also under computer power options - Hard Drive, monitor, & System Standby, are all set to Never stop.
What am I missing?
Is there a small program out there that would fool the monitor into seeing movement when there is none?
This would be a good option feature to add to this program.

is it possibly a screen saver of some sort?

http://storeyourpicture.com/images/s...oStreaming.jpg

Thanks Carlobee, that was the one I overlooked.