Background image in Flash

I am in the process of putting together my own site. Currently I have a background image in my html that repeats horizontally and vertically. I then placed my Flash movie on top of the page and set the background of the Flash movie to be transparent. It looks great and works but, unfortunately, the transparent background combined with my animations are a little too processor intensive.

So my question is, how can I place a background image in my Flash movie so that it will cover entire browser background (a.k.a. tile) without being processor intensive? Also, I’m trying to avoid using an enormous image for the background.


BTW: This weeks site of the month seems to be pulling it off.