Collectible Card Game Headquarters

Does anyone know where is Challenge Mode info stored? The thing is that I have installed from the beginning the game in another PC, but don't know which files to copy to have my cards unlocked... I don't want to re-do every single challenge again.
I tried copying the whole Magic folder, but for some reason, the game doesn't start at all.

Thanks!

FACES directory will do

Humm, I didn't understand you... What should I do with "faces" directory? I mean, it only stores the avatars for duels. I tried copying and deleting it, but nothing happens.

Thanks again.

All the unlocked challenges are stored there. If you copy all the files in FACES directory from your old installation to new one you will have all the challenges unlocks transferred.