Buying US Dell from Spain?

Hello, I am thinking in buying the xps m1210. I see in the US Dell webpage that there are better prices and more variety of products than in the Spanish Dell webpage.

Ideally, I would like the american Vista with Spanish keyboard, but I prefer american Vista with american keyboard rather than spanish Vista and spanish keyboard.

May I buy in the US Dell webpage? If yes, will the warranty work in Europe? (ie, is the warranty world-wide or only regional (american, european, ...)?).

I have been told that there ARE physical Dell shops in the US. May I fly to the US and buy it there? will the warranty work in Europe?

Which changes I will have to do to adapt an american laptop to Europe? I guess that the energy adaptor. Anything else?

Thank you for your help.

 

You cannot buy from DELL USA if you are in Europe. You can buy one from the States if you fly there and buy it in person or you could ask an USA resident to buy it for you.
The XPS series have a better warranty (for all european countries) but I am not sure if it is international.