I knew there was a way to do it, and I will take this advice you've given me, and play around with some stuff. I've already tried the "much faster way" you've mentioned, and was successful. I'd like to figure out how to manipulate the xml files for sure.
I know it's off topic, but here are some of the things I've done for fun. I only use TAC, and I've added select elements of the Blue Marble graphics pack to it, the Union Jack flag for the English, the colorful versions of the buildings in city view, and I even changed the music for the opening menu to a song from Master and Commander named "Into the Fog".