I have the lens now to try on my D7000, what's the best setting to use this in?
M or A on your mode dial will work fine. You may have to first get into the menu, and enter the non-CPU lens data. If you are getting an error message, the camera is probably telling you to enter the non-CPU lens data. This is assuming you have a lens of the same configuration as the one in the OP's image, which is an AI or AI-S lens. AI and AI-S Nikkor lenses will work with your D7000's metering system.
To state the obvious, set the desired aperture with the aperture ring on the lens, as there is no linkage to your camera's aperture control.
This is general advice, as I own neither a D7000, nor this particular lens. (I have comparable Nikon SLR cameras, and other AI-S lenses.)
For more specific advice, try the Nikon section of this forum.