Cannot Map Drive, but can view shared folders

This is my first network drive, its the World edition white case with blue rings.  It installed fine on both of my computers (hardwired desktop & wireless laptop). I even successfully backed up both computers.

Now I no longer have the network drive in My Computer, but I can still see the Public folder in My Network Places.  I have tried manually mapping to the IP address, but can’t get it to accept the username and login.

I am at a loss, any suggestions?  I just reformatted the desktop and I am trying to recover my files.