Let’s say you have a dynamic text field in Flash CS3 Professional in which you’ve embedded the fonts (via the Embed… button on the properties panel). The font style is normal. If you wish to format text applied to the .htmlText property with HTML formating tags (<b>, <i>), you’ll need to also make sure you have additional text fields set to those font styles somewhere on the stage. They can be in an area outside the visible area of the stage. If Flash does not have these additional styles, it will drop that text (or may render it as normal style).
Example:
What you have

What you get

Here’s what you need

And here’s what you’ll get
