I'm in Spain at the moment , and i was wondering if i bought New Vegas here will the game be in spanish? I went and looked at the box and the backside of it was in spanish. Is there any way in the game itself to change the language , or is there a way to do this on the xbox itself?

You need to buy the version of the game that is in English and you can only do that by buying it from somewhere like England or United States. Unfortunately there is no way to change the language of the game to different languages. Please don't try this on computer because you will block the disc.