Array Help

I have a number of movie clips (25) on my stage and when a button is pressed the movieclips will move to different positions using the tween class.

What i want to do though is, i have the co-ordinates of the 25 possible positions where the movie clips can move to, and when the button is pressed each movieclip is assigned a set of unique co-ordinates from the list.

I think i need to store the co-ordinates in an array and then pop them out randomly, but im unsure how to do this.

Any help would be great!