[Nutrox]

Here's something that might help you out...

stop();
 
Stage.scaleMode = "noscale";
Stage.align = "tl";
Stage.addListener({onResize:reposition});
 
function reposition() {
var header = _root.myHeader_mc;
var content = _root.myContent_mc;
var footer = _root.myFooter_mc;
 
var nPos;
 
nPos = getNewPosition(header);
header._x = nPos.x;
header._y = 0;
 
nPos = getNewPosition(content);
content._x = nPos.x;
content._y = nPos.y;
 
nPos = getNewPosition(footer);
footer._x = nPos.x;
footer._y = Stage.height - footer._height;
};
 
function getNewPosition(mc) {
var newX = Math.floor((Stage.width - mc._width) / 2);
var newY = Math.floor((Stage.height - mc._height) / 2);
return {x:newX, y:newY};
};
 
reposition(); 

...that will reposition three different movieclips named "myHeader_mc", "myContent_mc", and "myFooter_mc".

All three movieclips will be centred horizontally. myHeader_mc will be fixed at the top of the stage, myContent_mc will be centred vertically, and myFooter_mc will be fixed to the bottom of the stage.

Hope that helps.