Imported video frustrations

im using flash cs3 andimported video to the stage using the file menu. it automatically adds flv playback component. the thing is thewhen i try and stretch otr make the instance on stage bigger then the default playback size of the video file, when i publish it the vid wont be stretched as i wanted it.

so my question is how would i get this component to be able to stretch and not be constrained to the max size that is the vid file size