Hi Hippche, you need to have Little Reader installed in your computer in order to use the *.cat or *.pl files that you see here in the forum's downloads library.
If you haven't tried it yet, you may get a free trial of Little Reader by following the instructions in this article:
http://support.brillkids.com/entries/20390567-how-to-get-a-free-trial-for-little-readerIn the meantime, please have a look at the Free Downloads section where you can find files in pdf or ppt formats.
I hope this helps!
