secure copy problems

Hi everybody! I try to copy some directories from one machine to an other with scp. Now I would like to do this with a cronjob, but it doesn't work. I think there is a problem with the authentication key for the remote-machine. Is there anybody who can help me, to solve this problems. thanx Dom ________________________________ Assistent ISB-TeamTechnik Dominik Metzler Plattenstrasse 14 CH-8032 Zuerich