Ah, I see. Here we go
the function is:
duplicateMovieClip (movieclip to be duplicated,"name of new movieclip", depth of movieclip);
if you dont know what the depth is, just set it to one.
Here is a frame code to duplicate a movieclip, we will call it circle, and move it somewhere.
duplicateMovieClip (_root.circle,"circle2", 1);
circle2._x=15;
circle2._y=60
Important: The name of the new movieclip MUST be in quotes. Also the name of the first movie clip must be the instance name, not the original name.
If you need another example I will write one for you.