I highly suggest getting MuRa's free "remove white" filter. Well, anyone's free "remove white" filter; I happen to use MuRa's. I think there's a link in the Photoshop forum. It will remove the white background on flash for you so you can apply it to your texturemap easily. Also, remember to respect flash copyrights as well. In a lot of cases you won't be able to redistribute the textures you make.

(P.S. The picture here [a WveryIP] is V3. If anyone's wondering how I got the seam matched up on her back, I'll be honest. I did it on a Vicky2 map and then used Dark Whispers V2-V3 texture converter. Only way I could figure to do it.)