Quick question about installing "StochCrossAlertOnClosedCandle"

Hi guys, I've been looking for a way to get MT4 to give me an alert when my stoch crosses, and someone very kindly posted this link. Well upon downloading it does not seem to be an EA. Anyone have any idea how to use this file? Did not seem to work as a script either. Any help would be awesome!

http://www.forexfactory.com/attachme...2007%2010:33am

Ps. Also if anyone know's how to get MT4 to alert me when the stoch cosses that would be a huge help! :

It is an indicator. Save it to the indicators folder which is a sub-folder of the experts folder.

Thanks so much! Got it now