Finetuning of RAW can be achieved manually or automatically. The manual procedure is described by Bruce Fraser here http://www.creativepro.com/story/feature/21351-1.html
In order to accomplish this with QPcard 201 you need a reference image with RGB values. This image can be downloaded here.
But there is also an automatic way to go. Rags Gardner at http://www.rags-int-inc.com has a Technology department on his site: http://www.rags-int-inc.com/PhotoTechStuff/ with lots of useful information and solutions for digital photographers. Rags has written a Javascript for automatic color calibration with ACR. The script can be downloaded free from Rags site here:
http://www.rags-int-inc.com/PhotoTechStuff/ColorCalibration/
You can read Rags explanation here:
http://www.rags-int-inc.com/PhotoTechStuff/AcrCalibration/
It is possible to carry out the ACR calibration with only a QPcard 201. However, mounting the color card on the bigger QPcard102 gives several advantages. You have the perfect target for custom white balance setting and 18% exposure setting. You also have a perfectly neutral background when you take the calibration picture of QPcard 201. The importance of a neutral background is emphasized by Rags Gardner.