Is there an easy way? HELP

Someone create a large swf file. 1000x1850px.
I need to take a portion of it where she created a banner. So I need to take that portion of the stage to make it 728x90. But I don’t think this is possible.
I tried selecting all the frames and moving it to fit in a 728x90 stage but all the tweens are in old position/ See,s she should of made the banners at corect size in placed them in the html page.