Tutorial on camera movement in Bryce, but these fundamentals do actually apply to other 3D programs.
I've had more people than I can count saying "I can't find this object that I added", especially in Bryce, so hopefully this will help you guys out a bit.
Edit: To drag the camera in Bryce, just left-click it and move it. To change the values of anything in Bryce, hit the "A" next to it.