I have an Onkyo DV-500 DVD player; it has a 'programmable region-selection capability;' however, as I purchased the component in the USA, that capability is not activated (player will decode Region 1 DVD's only). Is anyone familiar with the circuit design of this player, and could tell me how to enable the region-selection capability? If not, has anyone had experience with the Cambridge Audio 540D DVD player (it has an all-region PAL/NTSC capability)?