Enabling Power Retouche as Smart Filters in Photoshop CS3

In order to use Power Retouche as smart filters in Photoshop CS3, you have to enable it within Photoshop.
It is really easy, and you only have to do this once.

You have to load a file with the long name EnableAllPluginsForSmartFilters.jsx which comes with Photoshop CS3.
But you have to load it from within Photoshop. You can't load it by doubleclicking it.

Here's how to do it:

Open Photoshop CS3.
Go to the menu File.
Here select Scripts, which opens a submenu.
From the Scripts submenu select Browse
This opens a standard explorer dialogue called Load
Here browse to:

(Windows)
C:\Program Files\Adobe\Adobe Photoshop CS3\Scripting Guide\Sample Scripts\JavaScript

(Mac)
Macintosh HD\Applications\Adobe Photoshop CS3\Scripting Guide\Sample Scripts\JavaScript

and load "EnableAllPluginsForSmartFilters.jsx".
You will be prompted if you want to enable all filters as smart filters. Press OK.

Now you will be able to use all the Power Retouche plugins as smart filters.