hourly spam report

I am new to pm gw, i run this command as per this thread, post#10, and found following error: root@pmg:~# crontab -e 0 8-18 * * 1-5 /usr/bin/pmgqm send crontab: usage error: no arguments permitted after this option usage: crontab [-u user] file crontab [ -u user ] [ -i ] { -e | -l |...