Guest printing

[Mike Black]

How do I set up to allow guest printing?

I've got one workstation that users log into with a user name/password that
is not on my domain controller.  I'd like them to be able to print (but
nothing else).

Right now I've got an smb.conf printer entry like:
[HPLJ5]
   printer name = HPLJ5
   comment = HP Laserjet 5Si/Mx PCL/Postscript
   browseable = yes
   path = /usr/spool/public
   printable = yes
   public = yes
   writable = yes
   create mode = 0660
   guest ok = yes
   printer driver = HP LaserJet 5Si/5Si MX PS

However, samba is trying to validate the username (which fails) rather than
allowing guest access during the session setup.

password server MBLACK rejected the password
NT Password did not match ! Defaulting to Lanman


Is there another step involved here that we need to do?