Well, I made a small test of it, it works really well, you just need to make a gray scale image with 8-bit palette and run it through the command line program (type -help as parameter to display the different parameters that can be used), I might need to make some more tests, but it seems that Vavoom is not able to use the slopes made by it, I don't know if it's because of the ID Number that the slope thing has in Vavoom or because of something else, I'll do more tests of it and see what the problem is...