[arin-ppml] User's registratations information.

[michael.dillon at bt.com]

> Anybody know which is the best way and process to get this 
> information? The argentinian goverment is working in the case.

First go to a judge and get a subpoena (una citación).
Then find someone who will serve the subpoena (entregar la citación) in the USA. Verisign <http://www.verisign.com/> is the .com registry operator and they publish the address of their worldwide headquarters on the website under "Contact Us". You might want to start by sending an email asking them where to send the subpoena, but they probably will not provide any data to you unless they have received a subpoena that has been ordered by a judge. 

--Michael Dillon