I suggest you write your congressman, because this kind of thing is imposed by law even though it violates numerous national and international anti-trust laws.
It's illegal to impose region codes in europe and (i believe) in australia, the US and Canada seem the only places where the government cares little enough about the average consumer to refuse to outlaw the practice, and enforce it with the DMCA.
I also suggest you check the RPC1 firmware page (
http://forum.rpc1.org/viewforum.php?f=30)
and Xvi's dvd region free mac guide
(
http://xvi.rpc1.org/)
I used to have a direct link to custom mac RPC1 firmware download sites, but alas things have changed since a year ago.