Two point lights will do it.  One with a fire color (dark orange ambient) and another with yellow-orange caustics on it.  Stick them on top of each other in the center of the flames object.  Violia, fire-light.

It's not perfect, but it IS quicker than some other offers in the render department.

I cannot save the world. Only my little piece of it. If we all act together, we can save the world.--Nelson Mandela
An  inconsistent hobgoblin is the fool of little minds
Taking "Just do it" to a whole new level!