Help with My Book Live and Win XP

This is actually a limitation in Windows, even in Windows 7. SMB connections are authenticated using the first username/password you mount or access a network drive with. Since Public has no password, subsequent connections are immediately authorized with no password, regardless of whether you specify one. You can attempt a work-around by using the drive’s IP for one share and its Name for the other, i.e. \mybooklive\public and \192.168.1.12\privateshare. In Windows XP I have had no trouble using that “spoof.”