I tried to make a self-illuminating (glow) map, a normal (bump) map, and a specular map using the original as a template. I found some techniques and tools that were quite effective and so I made a walkthrough to share.
Making the glow map:
With glow maps, all non-black pixels will show up, even in dark or no lighting, this works well for giving star ships the bright windows/glowing nacelles effect.
If you have a version of the texture with layers then it's as easy as lifting the layers with the glows off and putting them onto a black background. But don't worry if you haven't got layers, here's a technique
via the histogram.
First we raise the Shadows slider to above the majority of the input in the RGB channel, effectively discarding everything except the most brightly lit areas. Then we examine the texture, and note which areas need to glow more, ie. the nacelles, so we switch to the blue channel and move the Midtones (middle) slider to just before the huge spike of blue. The nacells glow more, but we have shifted the other hues inadvertently too.
The final step is then to correct the colours. The light cone at the bottom of the texture should be orangey-yellow. Look up the RGB additive colour model and you can see that to shift red to yellow, we need to inject more green. So switch to the green channel, and move the Midtones slider to just before the huge spike of green. Ta-da! a yellow looking light. As a bonus, it gave the nacelle glow more definition.
Select and de-saturize any glows that we want to be white and add your finishing touches and then we have the final glow map.
Here's the original texture I worked with.
Here's a before...
...and after.
Much better
normal map to come next.
.
Well, basically, all of those crazy blue, pink, and green colours in a normal map are surface normal information but they're encoded as colour information, in the Red, Blue and Green channels. When CrazyBump costs money I'll make my normal maps another way, and I'll try and make an example where I actually use normal maps for high poly detail. All in good time. 
You'll have to open the .max with 3DS Max (or gMax).
