Let me search inside the source, and I'll come up with something you might use. It'll take a couple of days, though.
Check out my Vimeo channel for the smoke and fire tests:
EDIT: I might say that this effect http://www.vimeo.com/6994514 is using two effectinfo.txt effects, placed one above the other.
It's pretty simple to do it, the hard part comes when tweaking and trying to make it look real.
