apt-get install hellanzb vi /etc/hellanzb.conf
Important config in above conf: Hellanzb.PREFIX_DIR = '/home/linuxmce/hellanzb/' Hellanzb.SKIP_UNRAR = False #Thats about it. You can set the LOG also.
Daemon Mode: hellanzb -D
Refs: http://wiki.linuxmce.org/index.php/HellaNZB http://ubuntuforums.org/showthread.php?p=6158900