Wirelessly posted (Mozilla/5.0 (iPod; U; CPU like Mac OS X; en) AppleWebKit/420.1 (KHTML, like Gecko) Version/3.0 Mobile/4A93 Safari/419.3)
I just checked and I can see my Leopard install DVD through back-to-my-mac.
This is interesting because I have 10.5.2 on my MacBook, where I can see the disc, but only 10.5.1 on my Mac mini, which is sharing the disc.