I used a new Scene that I called ΓÇÿStartΓÇÖ. In this Scene only thing that is happening is that the Flash Movie stops and the ΓÇÿStartΓÇÖ-Button will play the next Scene when itΓÇÖs activated. This is how it works:
Select the First Keyframe of the Scene ΓÇÿStartΓÇÖ and place the ΓÇÿStopΓÇÖ Action. This will prevent the Flash Movie from playing further.