Once again, I'm a slacker. I'm not 100% sure on this but I think the icons you need to edit for the in menu items and such are in the Units>Vehicles>*Model*. That's the only place I can think of where they would be at. Not sure if those need to be unlocked or not either.
Yep, I found them. Just lots more WORK to do to make a COMPLETE Mod. However, I'm sure those of you doing mods are running into the same thing I have been, and that is finding that you end up going back and REDOING some of your skins and making them better/more detailed.
Wow, at this pace I'll NEVER finish! LOL!