Unfortunate that there are those that post useless replies. They are like dust....a fact of life that we have to endure.
At any rate, I have had dust on my D7000 sensor. I was tepmted to "go in" with a cotton swab to clean it. However, before doing that I used the D7000 sensor vibrator several times along with a VERY MILD amount of air. The result was excellent. No more dust particles.
I do try to follow good technique when changing lenses. It helps minimize the amount of dust.