So I realized when I was installing planes to UT2 some don't come with night textures and some do. The planes that do have night lighting where should I put the FSX light map folder? Does it go in the plane folder or does it go in the texture folder or somewhere else?

 

Also some of the planes come with extra texture files like dxt 1 and dxt5 I think or something. I have just been ignoring those. Should I be using either of those instead or do I not need to worry about either one of those?

Flyable aircraft require the NL textures to be in the texture folder of that aircraft. I would imagine that AI planes work the same way.