Here are 3 more places you can try and ask:
http://www.hmart.com/
This is a Korean grocery/general store with locations around the US, including 3 in Virginia. They may be more willing to help you if you go to their store in person.
http://www.nycgo.com/?event=view.venuedetails&id=157478
Koryo Books is a bookstore in Koreatown. They sell books and some electronic stuff.
http://asiasoft.com/index.php?sid=41...107475173c2663
In NJ, they sell Asian electronics.
Hope something works!