you turn you pc off? we have five here that only get shut off to reboot. (yes, we run windows xp so it's like once a week.) what would worry me about such a set-up as putting an appliance module on the computer and telling it to boot up on power restore wouldn't be the "ON" but the "OFF". also that pesky sensor current running through it at all times wouldn't be too good (I don't think). you could always attach a relay to the power button and attach your favorite x10 device to that (I'm thinking um 506 set to momentary) and set your computer to power down when the button is pressed.