The D7000 w/ 70-200 f/2.8 would set you back about $3600.
You could switch to Canon and get the 7D, which shoots even faster than the Nikon. The body is more, but you can get a non IS 70-200 for less, so the total would be about the same as the Nikon body and lens.
Want to upgrade my Nikkon D60 camera.
Any idea on what would be a good upgrade.