Crontab question

[Darryl Hoar]

Greetings,
I am running 5.1-release.
I have installed rsync from ports, and want to use it to archive.
I want to add an entry to cron so it runs nightly.  I didn't quite
understand the man page when it came to arguments to the 
command you are running.

ie
0 0 1 * * *  /usr/local/bin/rsync -av /working/ /backup/working 

I also want the output of the rsync command to go to a named file.

Any help greatly appreciated.

-Darryl