[Papervision3D] Need help from a Flash Developer

[SJ]

Hi List, i need some help with Flash-AS3

I mainly do 3d modeling for living, so my knowledge about Flash and 
actionscript is dreadful.
Anyway, i´m currently building my website and in the process i come across 
with a dead end
with my current two-day-skills with Flash. The question is this, i´ve made a 
FLA file, within it there is a movieclip which
contains a secuence of 72 images (a render of one of my models). My goal is 
to have two buttons, one for advance the frames
and other one to move backwards. The code i put below just doesn´t work, if 
any body can help me, advice me or charge me for do it it,
this is my email: fernando_alfa_d at hotmail.com. As a footnote, in this link 
http://www.pixologic.com/turntable/ you can see a super advanced
version (as a local web developer refers to it when i contact him) of what 
i´m talking about. I just need a version, doesn´t matter if it is like 
Pixologics
or the one i was tryin to develop, it just have to be understandable for a 
person that doesn´t eat AS3 every day. With a FLA file and one class i´m 
done, i can put the images in the file by my self. I´ll be waiting for 
replies. Thanks for reading.

::::::::::::::::::::::CODE::::::::::::::::
package {

	import flash.display.MovieClip;
	import flash.display.SimpleButton;
	import flash.events.MouseEvent;
	import flash.events.Event;

	public class turn extends MovieClip {

		public var _turnMC:MovieClip = new JeepWrangler(); //the image secuence
		public var _btnDerecho:SimpleButton =new derBtn();
		public var _btnIzquierdo:SimpleButton = new izqBtn();

		public function turn() {

			_turnMC.stop();
			_btnDerecho.x=400;
			_btnDerecho.y=350;
			_btnIzquierdo.x=150;
			_btnIzquierdo.y=350;
			addChild(_turnMC);
			addChild(_btnDerecho);
			addChild(_btnIzquierdo);

			_btnDerecho.addEventListener(MouseEvent.MOUSE_OVER, overDerHandler);
			_btnDerecho.addEventListener(MouseEvent.MOUSE_DOWN, downDerHandler);
			_btnIzquierdo.addEventListener(MouseEvent.MOUSE_OVER, overIzqHandler);
			_btnIzquierdo.addEventListener(MouseEvent.MOUSE_DOWN, downIzqHandler);

		}

		public function overDerHandler(e:MouseEvent):void
		{
			_turnMC.addEventListener(Event.ENTER_FRAME, sigFrame);
		}

		public function downDerHandler(e:MouseEvent):void
		{
			_turnMC.addEventListener(Event.ENTER_FRAME, sigFrame);
		}

		public function overIzqHandler(e:MouseEvent):void
		{
			_turnMC.addEventListener(Event.ENTER_FRAME, antFrame);
		}

		public function downIzqHandler(e:MouseEvent):void
		{
			_turnMC.addEventListener(Event.ENTER_FRAME, antFrame);
		}

		public function sigFrame(e:Event):void
		{
			_turnMC.nextFrame();
		}

		public function antFrame(e:Event):void
		{
			_turnMC.prevFrame();
		}

	}
}
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