✓ Accepted answer
That script you have there makes the player's camera spin around a certain part named "Part," helpful for a main menu screen but not what I think you're wanting. By "zoomed in all the way the whole game" I assume you mean either keeping the player locked to first person mode or keeping the player's camera close to their character. The first option is very simple, needing only a single line: game.Players.LocalPlayer.CameraMode = Enum.CameraMode.LockFirstPerson. The second option is a little bit longer but has it's benefits.
local player = game.Players.LocalPlayer
player.CameraMaxZoomDistance = 20
player.CameraMinZoomDistance = 10
THE THING TO NOTE about both of these options and the script you listed from the wiki is they MUST be in a LocalScript since they run on the player's computer and therefore understand what a LocalPlayer or CurrentCamera is. By the way Darius, that script is an old hack-ish way of keep the players from zooming out. Some devs still use it, but the above methods have worked far better from my experience.