How do I view the "change" addresses in my wallet? listreceivedbyaddress 0 true doesn't work I just sent a test account 5 BTC. I see in the output 1.38BTC was "change" and needs to be sent back to my wallet.  

Where can I find the contents of 1F39Qj4E3HnbnyYgan5CZa37spGfHro8eK, and was expecting to find it there, but I typed listreceivedbyaddress 0 true and don't see it
The standard client always sends your Bitcoins back to a new address. If you want to figure out which address it went to, you can use gettransaction to view your transaction details (you got the ID when you issued the transaction), and check its outputs. The output that is not one of the addresses that you sent money to is your change address.