Fortunately the Nikon d7000 allows excellent ISO noise sensitivity ratings. Therefore, use a high speed lens with a wide open aperture and you can easily bump your ISO up to 2000 without seeing visible noise. Use at least a shutter speed of 1/400 of a second.
The best setting would be to set the mode to S and sound the back dial near your thumb until the shutter speed says 400 or higher. Then hold the ISO button next to the screen on the left hand side and spin the same wheel again to adjust the ISO. Take a bunch of pictures, adjusting the ISO until the photo looks bright enough.
I hope this helps!