So the question is, how do you rename them? I see the computers in the network on Windows Explorer. When I click my computer [in the network], the hard drives I've chosen to share all appear as shared folders. But whereas each of those hard drives has a Windows-assigned drive letter + descriptive term [for example, "D: Movies"] in the navigation pane under "Computer," each appears as only the drive letter when the computer is clicked in the navigation pane under "Network."
Right clicking on any of the drives will give you Properties in the context menu, but there is no option to rename them in Properties.