WAL shipping question

Hi,
Im trying to play a bit with log shipping between 2 servers primary and standby. These servers are running versions 8.3betat3. I had set up continuous archiving at the primary server. The manuals' example of archive_command is

archive_command = 'cp -i %p /mnt/server/archivedir/%f </dev/null'

This basically archives the data in the primary server itself...right!!! 
But how can I set up continuous archiving from primary to a directory (WAL archive directory)
on the stand-by server ?

Thanks
sharmila