[CREDO]

var words:String = "ПРИВЕТ КАК ДЕЛА";
var txt:String = " "+words+" ";
var text_style = new TextFormat("Arial Cyr", 15, 0xFFFFFF);
this.createEmptyMovieClip("letter_mc", 0);
letter_mc.createTextField("text_txt", 0, 0, 0, 300, 300);
var long:Number = txt.length-1;
var count:Number = 0;
onEnterFrame = function () {
if (count<long) {
count++;
letter_mc.duplicateMovieClip("letter_mc"+count, count);
letter_mc.text_txt.text = txt.substring(count, count+1);
letter_mc.text_txt.setTextFormat(text_style);
letter_mc.text_txt.autoSize;
}else{
delete onEnterFrame;

}
}


уже горячё, но ещё не то.