Having a few problems with a growing curve as flash cant handle the amount of vectors on the screen.. are trying to use some static curves instead that will c hange when the collide with one another.. only problem is that once a movie clip has been created in flash its very hard to alter the formula for the vector drawn other than its height and width.. other possibility is to store all numbers in an array an destroy the movie clip on collision and have it create a new instances of itself once the numbers within the array have been processed against the numbers of the object that it has collided with.. only problem is it looks a bit jerky and nothing much happens until we have a collission.