Ok NMS, to help I think the best thing I can do is show you a open source demo that I made with the effect, so you can look at it and compare it to your project.
This file: http://www.matt.brightwatch.com/renderview.zip
goes in your acknex_plugins folder and this file is the actual project
http://coniroot.de/~pirvu/au/scripts/shadercollection.zip

Hope this helps and makes it easier for you to set it up and understand in your own project

Matt Coles