I am not great on the computer when it comes to programming but ....
Looking through the GCCG folders i found where i believe the cards are kept .... as XML documents
File directory ...
GCCG ==> XML ==> LOTR ==> XML document
When you open it the code for the cards seems simple enough - i wonder what happens if you change it and enter a made up card? Or create your own XML document with a fake card in it? Probably doesn't work because to play GCCG you log onto a server and probably need to use the information stored there? I suspect that messing around with this is a good way to stop GCCG from working on your PC

I really don't know what i am talking about ....... just attempting to use my science logic
@ Thranduil (whoops) - downloaded the pdf and sent an email to my mate - if we ever get time to play some cards again we mght give the cards a test run
Another point that may be of interest - there is a seller on Ebay selling fake Star Trek 1E and 2E cards (also a defunct Decipher product)- created by the community he says? - there seems to be no action against him at this stage perhaps because he has a disclaimer saying it is not endorsed by Decipher, Paramount, etc - i guess they will get him eventually

or does this mean they don't care (Ebay doesn't seem to care as he has been reported).