yes you can play any xbox or xbox 360 games in zealand but you cant play on xbox live :)
Yes. you can play ANY xbox 360 game on ANY type of xbox 360. you can also play original xbox games on the xbox 360. (but you have to have a hard-drive to play original xbox games on the 360)
A long time ago, you could only play some xbox original games. Now, I believe you can play any original xbox games.
yes there is
yes it can play any xbox 360 games
any xbox 360 plays all xbox games This answer is pure bull. No, you cannot play all Xbox games on a 360. The list of compatible games is here: http://support.xbox.com/en-US/games/xbox-games/play-original-games
yes
no the hardrive you plug into your xbox 360 can only be used to play music, films and pictures from the hardrive on your xbox 360 you can not play any games nor store any xbox 360 data on the hardrive.
Yes you can play American Xbox 360 games in Australian but only on Australian Xbox consoles. Although there is a way you can play American Xbox games on an Australian Xbox. It can be done by getting your Australian xbox chipped/modded so you can play any region games and even fake/burnt games.
you could play any game
Only some, google the backwards compatibility list which shows all the current xbox games capable on the xbox 360. Not all of them are there yet, the list is updating and you have to apply and manual update to the xbox 360 in order for those games to work. can you play an xbox360 game on an xbox game yes
Yes, you can play Xbox 360 Pro games on an Xbox 360 Arcade without any updates or modifications, as long as the games are compatible with the console. Both systems are part of the same Xbox 360 platform, so they share the same game library. However, keep in mind that some games may require specific system updates to run properly, so you may encounter issues with games released after the last update for the Arcade model.