[llamabeast]

Yeah, the image file is either an rgb or a tga. Both can be edited by GIMP or many other graphics programs. You can poke around with it in any way you want. The only thing that Dominions looks at is the single pure white pixel in the centre of each province. So if you edit it you must be sure (a) not to obliterate any of the white pixels, or (b) add any pure white to the image.

I believe that Dominions numbers the provinces simply based on the locations of the white pixels. The other file (a .map) file then contains information on how the provinces are connected, as well as things like province names and terrain. You can open the .map file in notepad or any other text editor (not Word though!).