The problem with eviljedi's normal maps is that they didnt have proper alpha channels. I already explained this to him, but he said he was having trouble exporting his ships with the normals maps.
Look at your normal map in Photoshop. Specifically the color channels. Make sure it has an alpha channel. If not then duplicate the RED channel, and rename it to alpha (this is straight from the dev's). Save it as dxt5 argb. NOT dxt5 nm! blammo! Your normal problem "should" be fixed.
And post some screens dammit 
Edit: I looked over the textures, and there are several problems. One is the normal map alpha issue i said above. It is best to make your normal using the nvidia plugins, and duplicating the red channel as i posted.
The second problem is the DA textures. You have "ghost" ships because you have all white in most of the alpha channels in the DA textures. Only the areas that are lit should be copied to the alpha. Basicaly copy the GREEN channel into your DA's alpha.
This is how the DA works for 1.05 (it is changed for 1.1)
Red channel is team color. self explanatory. Make all black if you dont use team colors.
Green channel is your light map. Areas like engine glows, lit windows, etc. etc.
Blue channel is your reflection, or shiny mirror surface. If you dont want shiny surfaces make this channel all black
Alpha channel is bloom. If you dont want bloom make this channel all black
The third problem is the models themselves are extremely bright in game despite all of the texture fix's. How did you export them? Did you use XSI? I have ship mesh highlight filter disabled, and they are still way too bright. It seems like the ambient is set extremely high on the materials. In XSI it is best just to delete any, and all of the imported materials, and create just ONE new scene material. Delete any extra phong materials it creates, and just use the one scene material.
Then assign your cl, nm, and da textures to that one material. Set your glossines in phong to 32 which is the default sins setting. You have some models with multiple materials assigned without any textures assigned to them. You are using one single texture sheet which is good. However the multiple unused materials could create some problems.
Dont forget to duplicate your UV's and set your tangents to the duplicate set in accordance with the mod documentation 