>One of the ways to tell is if the meter prongs >have little triangular cutouts on each of the prongs. The >non-AI prongs are solid without cutouts. To use these manual >lens all you need to do is add the lens focal length and >aperture into the non-CPU lens data in the Setup Menu. That >will give you accurate metering and the accurate aperture >readout in the upper control panel.
Thanks for your reply. I just checked the 50mm lens and it does have cutouts on the prongs, so it looks as if I will be able to use it with the D7000. I also have a couple of non-Nikon lenses which I used with the F3, but I am less certain about their compatibility. A little more research may be in order to figure out whether these lenses would be usable with the D7000.
I'm leaning heavily towards the D7000 with AFS 18-200mm lens kit, and I'm encouraged by hearing that I can use my old AI lenses in addition to the kit lens. Unless I'm missing something, this set-up should give me plenty of room to grow before I need to invest in more equipment.