I have found that the software or files needed in order to view hidden shares through network neighbourhood come with the NT4 Resource Kit. There are two files named ShareUI.inf anf ShareUI.dll. These files need to be placed into the c:\winnt\system32 folder and then ShareUI.inf right clicked, then "install" clicked. Now if you navigate to a remote computer through Network Neighbourhood, there will be a folder named "Shared Directories"
If using this method on Windows 2000, then you will recieve error messages due to the web content in the folder views, if you disable web content then you won't get any errors.