[F8 AS2] selecting fonts dynamically?

i’m creating a Flash ecard where users can write a letter, select different themes (xmas, love, patriotic, etc) and then send the letter to a friend. Based on the selected theme, I would like to choose a font for the letter that is appropriate for the theme (for example, kids theme would have a kiddy handwritten font).

Basically I’m looking for any advice on the best approcah to this situation, keeping in mind that the fonts will need to be embedded also.