I was lucky enough to obtain a Earthmate PN-20 yesterday. Waite let me rephrase that. My wife obtained a PN-20 yesterday.

After playing with it for a long time (I still am) I found that at this time you can not use it with GSAK. I found a way to get around this until Clyde from GSAK incorporates this into GSAK.

http://www.geocachingmaine.org/index.php?page=pn20-gsak