Ok, I'm still having problems with this.

In trying to apply my textures, I did the following:
I mapped them to the part in Max, saved it and exported it as an x-file. Then I converted it to a mdl file and put it into the Extra folder. No problem here...
To apply the texture, I created the map as a 2048x2048 bmp. Then I used the Nvidia Plugin to convert it to a .dds, changed the name to Extra300s_T and dropped it in the texture folder. No deal. I just got a black plane again.
As an alternative, I used DXTbmp to convert it to a DXT5 file, then used Imagetool to convert it to a .dds, renamed it and moved it to the texture folder. Still no joy...

Anyone want to hazard a guess as to what I am doing wrong?
daycab