It is the "shared folders" from your win PC system, either XP or Vista. Cook up some shared folders from your PC, say c:\PC\shared. when your tablet catch the wifi that shared with your PC, the c:\PC\shared will appear on your tablet as "shared folders" under your file manager. You used it as if it is a folder on your tablet. It does has a strange behavior, it takes a min or two after the tablet catches the wifi. Sometime the shared folders 'mysterious' disappear. My experience, when your tablet bootup with wifi 'automatically' catch on, shared folders will show.
Incredible, it works for 770 too under 2008He!

bun