help me!

[ahmetspontaneous]

i have bought ''the lord of the rings-the return of the king'' but i can't select characters except ''SAM'' even if i select another character (like Gandalf, Legolas, Gimli, Aragorn) i had been playing with only ''Sam'' again also i am always forced to play the game in hard mode and i can't change it. I heard that i can use some of the patches of this game and i searched it in the web but i found quite a few patches so i don't know which of them can be useful for my problem. Can you help me?