could set up a web cam looking near their door or in the room... then set it to detect a certain ammount of motion... say one sitting up in bed... then have that run in a window on your screen... I think you can view a web cam over the net if You have XP but i would have to test that... it also requires a PC up by the cam... oh well... just a though

I know of cheap radios that dont require licences that can be set to transmit all the time, just choose a channel and a sub channel and chances are that no one with in 2 miles will pick it. Best of luck
-: phenious :-