Copy the action set to Photoshop default action folder or simply drop 
it on photoshop. Mac users eventually should remove the .atn ending 
to make them work.

The ZIP contains one action set, that could be used with Photoshop 6
or above. The action was tested with Photoshop 6 and CS.

The action set consits of two actions: One for the first image and one 
for subsequent images. This is because for the first image the alpha 
channel only has to be converted but all others has to be copied into 
this first one.  

I suggest to put the 'Next Image' action into a droplet that allows to 
drag a set of images on it. Be carefull if you use it manually. Open 
only one additional image at a time. The source image is automatically 
closed without saving.

Have fun

(c) Erik Krause 2004