How do you create a "network" folder

Can anyone tell me how to create a network folder.  The New-Folder cmdlet doesn't provide that as an option ,but yet under the vSphere 5.1 Webclient that's an option.

I'm trying to automate the creation of folders, dvSwitches and dvPortGroups.  I can do the rest but can't seem to figure out how to create the network folder which is really the first thing that I want to do.

Any help would be greatly appreciated.

Cheers

Ant