Share Names With a "$" Character at the End Are HiddenID: Q90929 
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When sharing folders or drives with Windows, if a dollar sign ($) 
character is added to the end of a share name, the share name does 
not appear in a browsed list of available shares on the server.
If you know the full name of the hidden share, you can obtain access to 
it normally by typing its name with a $ at the end.
This functionality is also supported in LAN Manager
For example, if drive C: is shared as ROOT$ on the machine SERVER, then ROOT$ does not appear when SERVER is browsed by a workstation. However, if a user enters \\SERVER\ROOT$ as the path in the Connect Network Drive dialog box, the user can connect to the hidden server.
Additional query words: 3.1 3.10 wfwg win31 hide
Keywords          : kbnetwork kbusage win95 win98 wfwg 
Version           : WINDOWS:95; winnt:3.51,4.0
Platform          : WINDOWS winnt 
Issue type        : kbinfo 
Last Reviewed: July 18, 1999