// Create a new instance of the Font1 symbol from the document's library.
var myFont:Font = new Font1();

/* Create a new TextFormat object, and set the font property to the myFont
   object's fontName property. */
var myFormat:TextFormat = new TextFormat();
myFormat.font = myFont.fontName;
myFormat.size = 24;

/* Create a new TextField object, assign the text format using the 
   defaultTextFormat property, and set the embedFonts property to true. */
var myTextField:TextField = new TextField();
myTextField.autoSize = TextFieldAutoSize.LEFT;
myTextField.defaultTextFormat = myFormat;
myTextField.embedFonts = true;
myTextField.text = "The quick brown fox jumped over the lazy dog.";
addChild(myTextField);

http://www.adobe.com/devnet/flash/quickstart/embedding_fonts/

Embedding fonts in ActionScript 3

actionscript

ActionScript 3