When you pluged your D3 into your pc, did anything pop up on your pc screen?
You might have needed to set the D3 to mass storage.
than install dropbox off of play and upload that folder to there. then dl dropbox on the dna and dl the pics to there.
Good call. Get Astro or AndroZip file explorers. I like androzip for unpacking files but prefer astro to browse my files. They both do the same thing but with different UIs.