Slideshow using an Array?

Question

For my flash class we are required to make a slide show that cycles through 6 different movieclips as slides. A requirement of this is to store them in an array for purpose of navigation..
I'm not 100% how to do this. I emailed my professor but he hasn't gotten back to me yet. Anyone here wanna take  a look at the beginning of code I have and maybe give me some pointers? Thank you
import flash.events.MouseEvent;
stop();
var slideArray:Array = new Array(Slide1,Slide2,Slide3,Slide4,Slide5,Slide6);
var currentSlide:int = 0;
next_btn.addEventListener(MouseEvent.CLICK, NextSlide);
function NextSlide(e:MouseEvent):void {
    if (currentSlide == 0){
        loader.source = slideArray[0]
        currentSlide++

Answer 1

Alright so it was me who had it all wrong.... I got it working now the way he wanted it and I have it working only with the "next" button. I'm not 100% sure how to get the previous button to work...
here's what I have (ignore the commenting, i have to explain each line of code for class so I was getting a head start)
var slideArray:Array = new Array(Slide1, Slide2, Slide3, Slide4, Slide5, Slide6); // defines the array that holds all the instances of the movie clips
var currentSlideArray:Array = new Array(); // defines an empty array for which the current slides on the stage will be held
var slideCurrent:int = 0; // defines a new integer variable named slideCurrent with a default value of 0
for (var i:int = 0; i < slideArray.length; i++) { // starts the for statement that sets each piece of the slideArray as a movie clip in the currentSlideArray
    var newSlide = slideArray[i];
    var slide:MovieClip = new newSlide();
    currentSlideArray.push(slide);
    trace("the value of i is: ", i);
next_btn.addEventListener(MouseEvent.CLICK, goNext); // sets an event listener for the next_btn that executes the goNext function
function goNext(e:MouseEvent):void {
    var slideOnStage:MovieClip = currentSlideArray[slideCurrent];
    slideOnStage.x = 0;
    slideOnStage.y = 0;
    addChild(slideOnStage);
    new Tween(slideOnStage,"alpha",Strong.easeOut,0,1,4,true);
    slideCurrent++;
    if (slideCurrent == slideArray.length) {
        slideCurrent = 0;
prev_btn.addEventListener(MouseEvent.CLICK, goBack); // sets an event listener for the next_btn that executes the goNext function
function goBack(e:MouseEvent):void {
    var slideOnStage:MovieClip = currentSlideArray[(slideCurrent)];
    slideOnStage.x = 0;
    slideOnStage.y = 0;
    addChild(slideOnStage);
    new Tween(slideOnStage,"alpha",Strong.easeOut,0,1,4,true);
    slideCurrent--;
    if (slideCurrent == slideArray.length) {
        slideCurrent = 0;