Question regarding displaying hover captions

I am learning Flash MX through kirupa tutorials.They are really very much helpful…i donno even flash5 but this tutorials made my learning job easy.Thanks for providing such good stuff.
I am trying to pull data from XML and display that as captions.Now the problem i get is the text box size is fixed and its unable to show all the data. And also how can we get black border around text.I tried border around text option but that gets displayed even there is no text to be displayed.I hope i put my point correctly.Any solution would be greatly appreciated.Looking for one…thanks