samba - Mar 2006 - Newbie problem setting up samba print server with no authentication

I am trying to set up a standalone samba print server, however when I
try to select the server in the Add Printer Dialog or in network
neighborhood from a Windows XP Professional machine that is on a Domain
I get a password prompt which I do not want. The results of the
testparm command is below:
 

Load smb config files from /etc/samba/smb.conf

Processing section "[printers]"

Processing section "[tmp]"

Loaded services file OK.

Server role: ROLE_STANDALONE

Press enter to see a dump of your service definitions

# Global parameters

[global]

      workgroup = WORKGROUP797

      server string = Samba Server 797

      username map = /etc/samba/smbusers

      log file = /var/log/samba/%m.log

      max log size = 50

      socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192

      printcap name = cups

      dns proxy = No

      wins server = 131.110.80.31

      idmap uid = 16777216-33554431

      idmap gid = 16777216-33554431

      hosts allow = 131.110.88.70, 127.0.0.1, 131.110.88.222

      cups options = raw

 

[printers]

      comment = All Printers

      path = /var/spool/samba

      printer admin = root

      guest ok = Yes

      printable = Yes

      browseable = No

 

[tmp]

      comment = Temporary file space

      path = /tmp

      read only = No

      guest ok = Yes