GM,
It is a good indicator as long as know volume. I don't think they have the free promo any more. Volume Spread Analysis is totally different trading method.
GM,
Have you tried the free "better volume" indicator available? Im unsure how to attach it. So here is the link: http://emini-watch.com/free-stuff/volume-indicator/
There are a few other TS indicators offered free (or cheap) at worldefiles.com as well. I hope this helps you.