@Kantor.
It's not about playing MGS4 with a board.... those games are designed around the PS controller.
That's like asking someone how to make toast with a microwave.... the microwave is a very versatile item for cooking but you can't toast with it.
Some "old style" games can be achieved as well as, or better with the board than DShock, like boarding/skiing... driving games (pedals) and many puzzle games like tetris or rolling maze type games... in addition there can be many other things done that can't be done on a controller just like some can't (or shouldn't) be done on the balance board.