okay, so would that allow me to set a password as well, cause I still want to play them

This question was just for future reference, I simply wanted to know if I could, so that when I do get my xbox set up I would be able to leave it lying around and not have to worry about my lil bro banging some prostitute in GTA lol. anyways what i am getting at is how do the parental controls work? do they allow password protection? or do they simply block the games all together?
could the same be done for rated R movies?