Annie, Your qualified questions are roaming through my head too. The "sensitivity" I don=B4t think changes the threshold or ratio, it just sort of stretches the graph, as far as I can see. As for the rest of the questions, I hope the Mitsar team will respond to the list. -- Joe ______________________________________________________ Få den nye Yahoo! Messenger på http://no.messenger.yahoo.com/ Nye ikoner og bakgrunner, webkamera med superkvalitet og dobbelt så morsom