can't help with the P4 bit, as i never had it but, it is easy to do in the free movie maker that you get with windows xp, i remember making an anim that had a girl kiss the viewer, and had a sucky kiss sound effect, for the kiss, and a pop noise, for when the kiss ended, and i used that movie maker to do it and it came out well timed, made my three year old ( couple of years ago) laugh anyway.