How to format .txt files?

I wasn’t sure if this post would go under Flash MX, or AS; but here i am. I am loading external .txt files into a scrollbar. I need to know how to format the text in the .txt file (I.E font size, color, bold, italic). Or, if there are simple tutorials or reference guides that i can look at.
I’m sure this is common knowledge to most of you Kirupians; care to take a few minutes to let me know? Thanks! :slight_smile:

Victor.