Indeed, I used the Shootorial Tutorial Shell. See the programming forum: http://www.kongregate.com/forums/4-programming/topics/52603-make-your-own-coding-tutorials
The code in my Main.as is different because it adds a simple animation not explained in this tutorial but the instructions in the tutorial should lead to a working flash program. If they don't could you whisper me with more details?
Thank you for your comments. Actually I started with a copy/paste version of Shootorial to learn the flash basics. But for uploading here I wanted to do something a little bit different.