I just want to complete Daffy4u's post. I have posted and exchanged with MikeL (he's from the UK I think...) on the subject. I also bought a few weeks ago my K2 and it is totally worth it. I'm just disappointed that I didn't wait a little bit more, I really like the DX...it is expensive though...
The method is quite simple, you just need a US address (friend or family member) and you use gift certificates. You manage the rest via your Amazon account and USB cable. I was also able to register my K2 wirelessly during a recent visit to the US. Life is good !
I strongly recommend the move !