like this genny... think your tray programs, the ones down there by the clock, that just sit there doing nothing until a certain event takes place, weather it be a mouse movement, a incoming webpage, or a secheduled event. This virus works kinda along the same line, it waits looks for a event, spreads, sometimes sends a email if it can. :) hope that helps you understand a bit better :) p.s. no offense taken :)