hmm.. thanks BSDfan666
I issued the command:
/usr/bin/find /path/ -type f -mtime +7 -exec rm -f {} \;
and it removed the files older than 7.
However it does not seem to run when I put it as a crontab.
I suspect the cron job is not even running. Do I have to 'enable' cron? Any ideas?
Thanks for your help.