Attach Movie Clip

:angel: Please help on this question… Thanks

var hands = new Array();
function attachHands(){
 hand1.attachMovie("attachHand1","", 50);
 hand2.attachMovie("attachHand2","", 50);
 hand3.attachMovie("attachHand3","", 50);
 hands.push(hand1);
 hands.push(hand2);
 hands.push(hand3);
}  

These are the codes i have typed.
I have already attach the movie in hand1,hand2,hand3

Is there a way to remove attachHand1 and attach a new movie clip on it?
Not to overlap on attachHand1 because it will be seen.

Those hand1,hand2,hand3 are empty movie clips…

Thanks for reading the question >.<