I'll have to check those out when I get home. I thought I already looked in every likely XML file and nothing seemed to point to Infantry-128.dds (or whatever the skin is called). I have the new skin, have it in the new directory, but without changing whatever points to it, it won't show up.
Anyway, my mod is sort of an in joke with me and a couple friends. Back in college playing the original Civ we used to change the name of our leader, our civ, and our cities to reflect local towns or sometimes all of Pennsylvania. So I made a "civilization" called the Pennsylvanians. It's a joke as a basis, but serious in approach. No unbalanced units, no extra free techs or any of that. It's a mod I meant for me and my friends to have some fun with.
I doubt a whole lot of you guys would fancy your capitol as Harrisburg and your leader being Thomas Mifflin, first governor of the commonwealth, but when it's done I'll post it here in case anyone else is from PA and wants to give it a try.
All that's left for me is to fix up my colors and to hopefully reskin my unique unit (Pennsylvania National Guard). I'm also debating adding Benjamin Franklin as a second leader, but we'll see.