The best place to learn how to use all the various DiNapoli indicators and methods is to buy his book 'Trading with DiNapoli Levels' by Joe DiNapoli. It's well worth purchasing.
Trading platforms that have the DiNapoli indicators include GFT's Dealbook, Trade Navigator and CGQ.
If you are at all interested in fibonacci levels then Joe has some great information on how to best use them.
I also really like the way that Joe uses the Detrended Oscillator as a way to figure out the exhaustion points in big moves.
You can find more information and other free stuff on the
Coast Investment Software website.
You can see how I have used the detrended oscillator and fib nodes in my trading when I posted about these indicators on my
forex blog.