seems it was just a lost cause.
Well, I'm not willing to give up on you just yet...
Just out of curiosity, did you make your own folder for your textures? Like I made a folder called:
\Data\Textures\pkleiss\UCMod
and I put all my custom textures for my UC mod into that folder. It keeps them well organized and separate from the vanilla ones. I am wondering if you put your .dds files into a vanilla folder and/or possibly named them the same as a vanilla file. This might cause some kind of mix up as the game might be picking a texture from the BSA instead of your own.
I feel so bad actually, that I would be willing to use TeamViewer and Skype to remotely control your PC and show you how I make texture sets. I use XP though, so if your problem is windows 7 based, I would have very little idea how to remedy it. But if its just some technique that you're missing, I'm sure we could resolve it.