Install PKG on cfw

Hi,
I'm kinda new to PS3 world especially to cfw, multiman ...
So I'm trying to install a game, I have pkg file, and I put it in packages directory,
After installing with the package manager, I tried to run the game and it said something about Copyright bla bla.
Anybody has a clue what should I do?

Cfw rebug 4.84.
Tnx