Here is a link to Nate's site:
http://www.the-digital-reader.com/?s=pandigital+novel
He has the instructions and zip file available for download. Just scroll down the page to the article "Hacking the Novel." However, make sure that you install the USB drivers from the zip file on your computer first before you plug it in (don't let windows install them without pointing it to the ones from the zip file). Nate explains this in the instructions. Then, update the firmware before you do the hack (available on the Pandigital website). If not, you will have to redo the hack when you do update. The update is definitely worth it.
Hope this helps