Technically not a Poser question but still sort of relevant.
I've been exporting my Poser animations as jpg's and importing them into Flash to render the avi's. A hundred years or so ago, I used to do animations in Flash using imported jpg images. I seem to remember that there was a way to select a color in a jpg and make it transparent. For the life of me, my poor frazzled brain can't remember how to do that anymore and I can't seem to find anything on transparent colors in the manuals.
Can anyone tell me?

"Facts are the enemy of truth."