Help me find a game im looking for.

I am trying to remember the name of this space like game I use to play, All i remember is I THINK it starts with a S, and its "s"something 2 or II, the basic is its a space ship that fly's around and destroys other ships doing missions and it has regular firing and 2 different missiles, one tracking and one straight fire, and the view of the game was optional, you can watch from the ship or from the front, its not like most fighter games where it shows from the top straight down on everything, and the flying space was literally unlimited, its nothing intense but it was pretty fun. It may be around 10years old or so, and i only remember it was pre-installed on my old computer(don't have anymore) if that will help.