I am trying to find out how to convert the main airplane texture file (i.e. c208B_T) to the inverse texture file (i.e. c208B_t_spec). I have already figured out that the second file is just the inverse of the alpha of the first file.On my first repaint I just manually painted both files but it seems obvious to me that there is a way to only paint the first file, create an alpha of it, and then just inverse the alpha to create the second file. But how do I do this? Can anyone help?

If you actually want to invert something then going to Image - Adjustments - Invert in Photoshop should do the trick.. if you use a different program there should be a similar feature.

I tried to find that option in Paint Shop Pro but am having trouble. What I really want to do is take the original texture file, create an alpha from it (which I haven't been able to do) and then invert the alpha to create the second file. I can invert the alpha easily enough but can't seem to create the alpha AFTER I have modified the file.So, I guess the actual question is how do I create an alpha image of the main texture file AFTER I have modified it? That way I can just invert it to create the "t_spec" file.