Dynamic Text Not Displayed if not embedded

this is a normal behaviour if:
- the textfield or a surrounding mc has a mask applied
- if the textfield is displayed at an angle other then 0
- if it is animated

...maybe some more cases might apply.

kinda, you can tell a textfiled to use embed fonts using actionscript, but you need to export the font when you compile the swf in the Flash IDE, otherwhise you can not assign it to the textfield. See the flash manual to see how to export a font.