I actually figured out the first part and got the box to load but now I'm having trouble closing the box again. So I have the Popup MC load in to an empty MC in the main scene. In the Popup MC I have another MC "ClosePop1" with the AS:

on (release) {
this.removeMovieclip("Popup");
}

It's not closing the Popup MC. What am I missing? This is using AS2.