Drag and drop Help PLEASE!

Hi All,

i have just been working though your drag and drop tutorial


I finally worked out that you have to set the flash version to 5 in order to get it to work in flash pro 8. Is this because of changes in actionscript? If so could someone be kind enough to tell me how to update it to work in version 8 Please. (Sorry it will need to be very simple as i am a complete noob)