Saving Files Directly from Flash Player 10

Read about saving files directly from flash player 10 recently. If I can pull this off then it will be a life saver with a project I am working on. I read a tutorial on

But i am not able to understand fully what’s going on there.
For my project I allow users to drag and drop object around the stage and save the the whole thing as an image once they are done. Any help with understanding how I can use this feature?