You access some stuff over your network.
It works with many of the emulators.
I put a ROM in a shared folder on my computer an I can access it in VBAGX through the network.
Also is in other stuff.
SMB in MPlayer is my primary use of it.
I have a videos (such as Bleach and Naruto episodes) on my computer and I use MPlayer and Wii to see them on the humongous TV downstairs (at least until I get my new monitor)
To set up is to set your PC which folder to share, once the folder is shared from your PC, set your Wii to access that folder by:
mapping the IP of the PC and folder folder.
The folder can contain music, video or any files you want to share. This is the same as sharing files within a network for security you need to set password on the shared folder.
Forgot to say, im like lost. I dont even know where to begin on how to mapp my wii to my comp. I already shared my harddrive on the network and got my ip address ready