If you are like me and have NOT upgraded the Samba to allow the NT machines to successfully log onto the E-Smith domain I believe they are considered "guests".
To allow your "guest" NT machines to print on the e-smith printer that they can clearly see, edit your /etc/smb.conf file and find your [printers] section. Locate the printer your want to be able to print to from NT and change the "guest ok" from no to yes. I dont recall if I had to restart Samba or not, but I dont think so... but you might! Anyway, it worked for me to allow my Win2000 workstation access. Once you have gotten it proven you then need to create a custom template as described in the manual for that custom setting so that this one-off change is not lost the next time the smb.conf file is regenerated (any ibay change for example).