Saw this thread from another forum...
"Nikon D3100 newbie needs help using the kit lens"
I successfully installed the Nikon DX AF-S Nikkor 18-55mm kit lens on my new D3100.
I set the lens to 'Auto', with VR set to 'on'.
I understand this lens has a built-in motor, and I cannot figure out which button zooms this lens in and out.