Trying to use some style of lights in Game

hello there…

I dont know how to put a light in a game, i tryied to put an alpha UV images edited in Gimp (lights), but lights really does not bright is oppaque i dont know why…

I saw here someone posted an example of a car and lights turning around the scenary really good… i want to do something like that with a space shuttle, simulating turbo fire…

I’m using 2.48, i saw that new version has 3 modes:

Texture Face Materials
Blender Multitexture Materials
Blender GLSL Materials

Seems to be that the third is most advanced, support reflections and others… but the first two are as well as the third with some limitations…

Which one of them i can use to make a light.?
There must to be a python script to do that… is not possible to do it without scripting?..

Thanks…