Want Some Cheese?
I think I have found a good combination for kid shots.  I put the Sigma 28-300 on the D70 and set it 
at iso 400 and use the flash for fill.  I set the camera for a f/5.6 aperture, and let it adjust up 
from there.  I can get decent results with slow shutter speeds to bring up the background. This shot
was toned using the Melancholytron plug-in for Photoshop.