Just finished my UNO deck mod for Full Tilt.
installation destructions:
Close Full Tilt
save image as Cards.png
navigate to C:\Program Files\Full Tilt Poker\Graphics\Table\Elements directory rename existing Cards.png file to OLDcards or something similar.
copy new file to the same directory and you're good to go.
screenshot of cards in action...
props to Shant for creating the original UNO mod for Party.