need help adding lighting in ship models

from GalCiv2 Forums
i'm trying to have some of my added ships have lighting, to have window lights and glows, etc just like the stock models in the game. Now I remember someone managing to do that by editing the textures. So does anyone how to do that with adobe photoshop?
modding
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Reply #1 from GalCiv2 Forums Top
Yes, Photoshop should have a built in lighting enhancement filters ,where you can adjust shadows and lighting effects for your exterior panels.(mine does)

e.g. like the directional flood effect on the struts and hulls.

As for windows,well this is a built up effect ,or layered if you will.

You'll have a png with the actual 'lightmap' so to speak.And an alpha,where the windows are transparent,to create a 'shine through 'effect.

Anyway probably best to see exactly what you are talking about,got texture pics?