Check Server Capacity Free Space

I would like to check the free space of a server share (\\server\share\) Is this a simple task and how would I do it?

I found the following for a mapped drive, but it does not seem to like server names.

Dim cdrive As System.IO.DriveInfo
cdrive = My.Computer.FileSystem.GetDriveInfo("C:\")
MsgBox("Total free space: " & CStr(cdrive.TotalFreeSpace))


Thanks