It can be really annoying when you are trying to work through or organize your photos that are DNG files and you have to open each one to view which picture is which. So to be able to view the thumbnails simply download this registry file
http://mansurovs.com/download/DNG-Windows-XP.reg
(right click on the link and select "Save Link As")
Save it to your desktop. Then double click on it to open it and click on "yes" to add the information to the registry. Then restart your computer. Now you should be able to view the thumbnails of your DNG files
