XBOX Live, and region seems to be very confusing. I'm based in London, UK. And I have a US XBOX which is not modded. It is a plain US NTSC machine. Please let me know if there're any false in the points below. #1. XBOX Live Starter Kit has regions. - So if you have US XBOX, and buy a XBOX Live Starter Kit in UK(Europe), it won't work with your US XBOX. You need to order one from US. #2. When set up an XBOX Live account, region of your XBOX (PAL, NTSC, NTSC-J) needs to be matched with billing address of you Live account. ie. If you have a US XBOX in UK, you need to put US based billing address for XBOX Live billing region.