Am I right in thinking if iI buy a USA Xbox and USA HD supported games I will get HD on my Pioneer plasma which supports this resolution. Where's a good place to get the machines from, and how do you modify the voltage? I assume only USA games will work. Are there issues with Xbox live. Does a UK and a USA version of the same game 'speak' to each other? Would I be able to use Xbox live with my friend in Denver, USA who uses a USA machine? The other hardware and software modifications to achieve this sound more complicated. Thanks for any help.