ActionScript 2.0 :: "default Position" For Dragging MC?

i'm making a drag-drop "quiz" (not much of one yet..)

If i click/release the mouse anywhere on the scene when the movie first loads, the circle_MC moves to 0,0 - i assume because myFinalX and Y are defaulting to 0 until doing something changes them.

How can i set this "default" to 50,50 but only when it first loads? (so it can be changed later without reverting back)

here's my (terrible!) code:

[AS]
circle_mc.onMouseDown=function(){
mousePressed=true;
}

[Code].....