Over-the-shoulder view?

Hi,

I recently bought the soldier content pack and I imported the model into the game so that the player is the soldier. I wanted it to be over the shoulder shooter so I keep the game in over the shoulder by pressing TAB. I want to do 2 things: 1: I want the game to start out as over the shoulder and not let the player be able to change it to 1st (unless I change the code,) and 2: I want to make the camera so you are looking over his shoulder with a crosshair so you can aim. Any help would be appreciated.

Thanks