Hello,
this is in my opinion a great indicator to identify the strength on each pair, I am using it to let some EAs run in the direction of the W1/D1 of the recenth strength indi.
It's free on this page:
http://www.forexfactory.com/showthread.php?t=163158
you can find it on the first post. Please read the manual to install the indicator, it is a little bit difficult.