Join them first to your Samba NT Domain.
What I have tried is XP and I don't know how could this be done with 2000.
Root should be added in your /etc/samba/smbpasswd but make sure to give him a different password with his Unix password for security reason.
After joining, you should see "your2000hostname$:" appended in your /etc/passwd.
There should be add machine script in your smb.conf.
See this thread:
http://www.linuxquestions.org/questi...hreadid=212458