Q: How to change computer descriptions?

1. Read General Notes
2. Read How to install Samba Server for files/folders sharing service?

3. sudo cp /etc/samba/smb.conf /etc/samba/smb.conf_backup
   sudo gedit /etc/samba/smb.conf

4. Find this line

   ...
      server string = %h server (Samba, Ubuntu)
   ...

5. Replace with the following line

      server string = new_computer_descriptions

6. Save the edited file (sample)

7. sudo testparm
   sudo /etc/init.d/samba restart