Help - ship models have no textures

I placed the .x file and the .png file(s) into the C:\Program Files\Stardock\TotalGaming\GalCiv2\Gfx\Models folder. I go to the shipyard, create a new design with the model, it shows up but with no textures. It is simply a "white" model. What am I doing wrong?

Thanks in advance

edit: Forgot to mention, it is a Battlestar Galactica viper model that I downloaded from the library.