CreateEmptyMovieClip & depth in as3

Hi,

I am new to as3, please help me over this.
to create empty movie clip

var mystage = stage.getChildAt(0);
var mc:MovieClip = new MovieClip();
mystage.addChild(mc);

but, where I have to set depth and the instance name, when I trace the mc.name. It shows as “instance1”.

I need to set depth and to name the mc. please help me.

Thanks in advance.:):ne: