flash data integration: Hey everyone

I'm an art student and have produced some pieces in Flash 8. Now I've been
asked for a high-quality (i.e. a letter-sized print at 600dpi) image, but the
animation uses transparency.

I've been able to generate vector-based PDFs that I can blow up to as big as I
want with no quality loss, but the transparency dissappears.

When I conserve the transparency, I get something that'll print at about 1/10
the size I need at 600dpi.

Help! Isn't there some way of doing this? If it's not possible from the
Flash Player (or from Flash 8), then does anyone know of an alternate program
that'll do this for me (preferably free or cheap)?

-Eric