You can get this for free with XnView: I have now written an easy tutorial to configure everything properly: http://ubuntuswitch.wordpress.com/2013/10/30/delete-jpg-and-raw-files-simultaneously-on-windows/

Works like a charm :-)

Edit for Paul Cezanne: I do not have any plans to take the blog down, as I use it as reference for such problems, but here is the relevant text from the above mentioned post:

Use XnView. After installing do the following:

1. Open the XnView-config file: %appdata%\XnView\xnview.ini (in my case C:\Users\alex\AppData\Roaming\XnView\xnview.ini).

2. In the section [File] add a new line at the end: Companion_00=jpg:cr2 This links the .cr2 (raw-File) to the .jpg. So if you delete the jpg it automatically deletes the .cr2. Replace the cr2 with the extension of your raw-file (so eg nef for Nikon) and save the file.

   If you want the effect also in the other direction you have to create another newline: Companion_01=cr2:jpg. For now you can just leave this, as we will hide the raw files in the next steps.

3. Start XnView and open the options (Menu: Tools > Options or via ).

   1. In General open the tab File Operations tick the checkbox “For Copy/Move/Delete use companion file (.xmp/.thm/.jpg)
   2. In Browser > File List write the file extension you want to hide (the raw file: in my case cr2) in the last text input and click the OK button.

That is it. Now it should be easier to sort your pictures, as only the jpg-pictures are shown and if you delete it, the raw file automatically gets also deleted.