I'm not sure I quite understand, but with camera parameters, you can change the degree to which the camera turns. For example, in my mission good vs bad, I have my camera at -360.00 and 360.00. The camera obviously rotates all the way around. If you want it to scan a narrow area, just lower the degrees using Camera: Parameters. There's also Device Parameters, although I'm 100% sure what that does. Seems pretty self explanatory though.
If I understand your question, you want the camera to not turn at all? In that case, perhaps setting the degrees to 0.00 and 0.00 would do the trick?
Your last question I'm not sure about. You're saying you'd like the camera to be off (that is, inactive) when you start the game. Perhaps change it's state from normal to Asleep?Sorry, can't really help you there.