How to resize a Flash movie

If I am working on a Flash 5 movie and it is, for example, 100 x 100 pixels, is there a way to make it 185 x 185 pixels and still keep the same exact look, just bigger, without having to resdesign everything? And what about to change the movie to a size that is not proportional, such as 250 x300 pixels?Do I always have to redesign it from scratch?