Hi!
I finally got the Alpha-mask working. After finding an old copy of Paint Shop Pro 7 I was able to make a bmp with the correct number of colors, and bingo! Such a nice feature, really. Too bad that you have to assign autogen to the areas that are not textured (that´s those default textures that are blended with your own photo), but I can live with that! [:D]
Might not be much, but this has really been a problem for me - but not anymore!
/hans