Hi,
Can you post a picture of the pan/tilt device and any model/maker labels it may have it and its motors.
Have you developed code JUST to control the pan/tilt, forget the camera and just get this working first.
Please read the first post in any forum entitled how to use this forum.
http://forum.arduino.cc/index.php/topic,148850.0.html
Can you please post a copy of your circuit, in CAD or a picture of a hand drawn circuit in jpg, png?
Thanks.. Tom.. 