i found something similar (altho it only worked if yahoo messenger was installed on the target system) about a year ago. written by a 17-year-old evil genius.
im guessing activating a cam would cause the power indicator light to go on but...?
anyone who activates my mic will go nuts listening to the tapping of overly active fingers punctuated by the occasional vulgarity and/or sigh of perplexed mirth.