[NuclioN]

The easiest way of doing this is to drag the new movieclip onto the last frame which the game will end on. (I.e. the game over screen.) An alternative is to create a new scene, and name it "Submit". On frame 1, include your new movieclip. In the main game, find the code which signifies the end of a game - and add:
Code:
gotoAndStop("Submit",1);

Is it possible (i shall test it also) to add an extra frame on the end of the game with a stopframe in it. On this frame is not a movieclip but a frameaction that is called when you add in the gameover section: GotoAndStop frame **. where the script is executed?