You can do this with resco explorer:
Resco Explorer: The Network Browser
The Network Browser let's you discover and take advantage of the wired-up world directly from your device.
Simply map the shared network folders and work with them as easily as with the local ones.
Various settings allow you to set your network drive in the exact way as you desire.
http://www.resco.net/pocketpc/explorer/indepth.asp