Rotation animation in flash?

Hi,

I am having a hard time getting an image to look good when doing a rotation animation on it.

If you’ll have a look at:

http://www.ianarmstrong.com/flash/main_1.html

… you’ll see what I mean.

The card images (pngs) become all aliased when the rotation is performed on them.

Is there anything I can do to stop this from happening? I’m just using a tween and using the transform->rotate and skew option to perform the rotation.