NHL Gamecenter AppleTv3 in Scandinavia?

Can anyone help someone who lives in Scandinavia to get nhl game center on Apple TV3? How do I go step by step? Having understood that I need to change dns address. Will the nhl app up automatically after restart and on / off power? Can I pay for access to nhl using a U.S. iTunes account and American gift card? How do other in my situation?