Nikon d90, how to tune autofocus?

Does anyone know how to tune the autofocus in my slr?

Here is the tool I use.

The LensAlign MkII Focus Calibration System.

Here is a link to one source

http://www.tangentphoto.com/reviews/lensalignreview.html20%26linkCode%3Dxm2%26camp%3D2025%26creative%3D165953%26creativeASIN%3DB004G3PANY?tag=ocfworkshop-20

The feature is called "AF Fine Tune". This is not available on the D90.