crontab doesn't work

[Rodrigo G. Tavares de Souza]

Hi,

   Do I have to start something to crontab works?

configuration file:
#  MIN    HOUR   DAY/MONTH   MONTH   DAY/WEEK     USER        COMMAND
   59      23         *        *        *         root        
"/usr/local/etc/sarg/make-report"
   0       0          *        *        0         squid       
"/usr/local/etc/sbin/squid -k rotate"

  It should generate a report every day, and clear the log file every 
week, but it isn't hapaning!
  What do I suppose to do?

Best regards
Rodrigo Souza
Analista Programador
Sao Paulo - Brazil