Windows

I’m getting into starship modelling and think I will eventually get to texturing. I have an Enterprise-D model where the textured windows light up. Does anyone know how I can emulate this and have windows that do not need a light source to shine? If you have trouble with this question just ask for an explanation.

Any help would be appreciated.

Never mind. I just realized I have to have a texture for the windows, set it to “Emit”, and have it with another Texture on top.