This will be a preloader that shows the percent loading.
1.Create a dynamic text box in the first frame,choose font,color font etc... 2.select it and give like instance a name to it dynam 3.Right click on the first frame and click actions
In the actions, paste this code
CODE
percent = Math.floor(getBytesLoaded()/getBytesTotal()*100); dynam.text = percent+"% is loaded";
4.Right click on te 2nd frame and choose the insert blank keyframe 5. right click on the 2nd frame and click actions
and cannot open it now(catastrophic failure 
)