Not sure if you got your answer EVIL-SCOTSMAN, so I decided to bump this for you.
AFAIK, Hypersonic only has the one website. Their company is based out of New York. However, it is my understanding that they do build and ship to Europe. Check out this link to get more information:http://www.hypersonic-pc.com/2001/international.htm
When I was in Germany, I was there with the US military, so my shipping and dealings were via the APO (Army Post Office). However, you can see how they deal with customs and the associated tariffs.