Fire and/or Smoke

Does anyone have or know where I can get some sample code that makes fire and/or smoke? I do not want to do too much with it. Just be able to display it a certain point.

You can render very good fire and smoke with particle systems: the tutorial about particle systems on nehe.gamedev.net may be good for you.
You can simplify the code by making it more specific for your case.
tFz