Some kind of screen saver

Is there a way to have a MC play when Flash file is not being accessed?
Basically something like a screensaver.
I want this MC to play while touch screen display is left un-touched for 30sec.
I also want the enter frame at first frame of sequence after screen saver expires (no matter where Flash file was left off).
Im using CS5 Flash and the end result is a Flash exe running on a LCD touch screen display with built in Windows XP.