Window Resize killing my design - help needed!

[font=Arial][size=3][font=Arial]I have an interface that I am content with that starts with a 5 pixel top and 5 pixel left background margin. When I publish (or test), Flash centers the interface and I end up with a HUGE top and left margin. How can I stop Flash from allowing the window to be resized?[/font][/size][/font]