How to make object shadeless?

First of all thank you for interest @ryan20fun in to my relevant problem , my scenerio for using this particaular shadeless GLSL shader would be for all eviroment liting (in example.: Making material shadeless to light source, but being able to be not black colored, but show texture with on image UV map existing shadows) of a texture map which maybe just one in scene for all objects joined into one big massive core of triangles with already prebaked full render maps with no specular.
Or should I parent one light to player, add fog and that way save resources. But it might seem to be unreal because my scene have indoor enviroment and how de friction fog in warm room could accure? Well can you sort this debate with yes or no , yes for possible no for can’t be done without any light source. Would love to get on the road with some existing examples. Thanks for interest to any one else too.