registered trademark superscript in actionscript

I want the ® in the below code to show up superscript when loaded into the text box. How is this accomplished? I am a designer and do not understand most of what I've read online telling me how to do this incredible and almost impossible feat.

Thank you in advance for any insight.

}

else  // Setup picture viewer vars

{

    totalImages = 117;

    imageDirectory = "Data/pictures/";

    filePrefix = "picture";

    info_mc.title_txt.text =  "4th International BioPlex® 2200 User Meeting";

}