In the absence of an up to date howto I was not sure which package files to use. I have left whatever was in my vistrails installation from the last time.
I was not sure which .vt file to use because the howto is out of date. I have tried vt_files/fireDemoSC2009.new.vt from ssh://math.ucdenver.edu/home/grads/jbeezley/wrf_vistrails.git, which gave me the error "Pipeline cannot be instantiated: Missing package: edu.cudenver.jbeezley.namelist".
So I used VisTrails/scDemo2009/fireDemoSC2009running.vt file dated 2/26/10 which I had from some earlier attempt.