SMB/name is missing

[Nathan Reeves]

Installed the latest version 2.0.X of Nessus on a RH7.2 server.  I'm attempting to do a scan against an XP workstation but I keep getting the following error appear in the nessus logs:   Not launching smb_nt_ms02-060.nasl against PCNAME because the key SMB/name is missing (this is not an error)   Searching previous messages came up with a response that it is happening because nessus can't determine the netbios name of the PC.  Question is, how can I fix this?   Also interested to know how the system gains access to the registry of a remote windows machine.  What username / password does it use to gain access?   Cheers   Nathan