Does anyone know the step by step procedure for how to Re-skin and/or Re-paint locomotives/rail cars for Trainz 12 for Mac. I use the Trainz and ask questions there but 98% of the users are PC users. Don't get me wrong, they try to help as best as they can with the reskinning advice. So I thank them for their efforts. But I thought I would ask an Apple user (since I have a Mac obviously) if they know how to reskin on a Mac computer with Trainz Simulator. If nobody has Trainz 12 but knows how to do reskinning in general, whether it be planes, trucks, boats, etc then please let me know. I use Gimp because Paint.net is for PC. If you have a suggestion on a better or easier paint program for Mac than Gimp, let me know - - the paint program has to have the option to save files to TGA format. Anyhow, if anybody knows the step by step procedures in how to do reskinning, I could sure use the help. Thank you.