Table inheritance and partitioning

I am making the move to partition a table.  I am trying to figure out  
the best way to migrate data to the partitions.  I would prefer to not  
have down time.  Does anybody have advice to give on this?  Is there  
any easy way to determine what records are in the master table and  
which ones are in child tables?  I can think of a few migration ideas  
doing this.

Thanks in advance.

--
Kevin Barnard
kevin.barnard@laser2mail.com