Why does Windows 95/98 report “non-Microsoft Winsock file detected”?
TunnelBuilder inserts an NTS “winsock shell” which enhances the functionality of the operating system to allow the user to have simultaneous clear and tunneled path support. Windows 95 and Windows 98 have version checking that will occasionally detect that a non-Microsoft Winsock.dll or Wsock32.dll has been installed. You can ignore this warning when TunnelBuilder is installed.