Material Editor > Standard material > Maps rollout > Self-Illumination button

Mapping self-illumination
You can select a bitmap file or procedural map to map the self-illumination value. This makes portions of an object appear to glow. White areas of the map render as fully self illuminating. Black areas render with no self-illumination. Gray areas render as partially self illuminating, depending on the grayscale value.
Self-illumination means that the glowing area is not affected by lights in the scene (its ambient color component goes away), and does not receive shadows.
To map the self-illumination value:
Click the Map button for Self-Illumination.
The Material/Map Browser is displayed.
Choose from the list of map types, and then click OK.
The Material Editor is now at the map level, and displays controls for the map parameters.
Use the map controls to set up the map.
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