You need to use get Date commands that Flash has to offer, you can easily know what month (Jan, Feb...), and day number (1,2,3 ... 31), and day of the week it is. (Monday, Tuesday...)And with some if condition, you can set what movie clip should show at what day.And that's it! - Examples on Flash 7, 8 help documentations on those commands are well done, just look inside.