variable for x, y position?

[nstanziani]

In this section of your code...

/* Attaches the Star movieclp to the Stage and sets its parameters */
_root.attachMovie("Star", "myStar"+init, _root.getNextHighestDepth()); 
_root["myStar"+init]._x = Math.random() * windowWidth;
_root["myStar"+init]._y = Math.random() * windowHeight;
_root["myStar"+init]._xscale = _root["myStar"+init]._yscale = Math.random() * (maxSize - minSize) + minSize; 

Math.random() * windowWidth 

sets the X and Y positon of the clip... change the random value to what you need for example:

Math.random() * 100 

will give you a set of random numbers between 0 and 100...

(Math.random() * 100)+50 

will give you a set of random numbers between 50 and 150... get it?