Please check the inbox of avr_kikuchi@hotmail.com and respond to the confirmation message to activate your new account. If you do not receive the message within 15 minutes, please read this article about spam filters.
Until you responded to the confirmation request, another user may also have requested the same login name (extremely unlikely,however). In this rare case you would need to repeat your registration. Also, if you accidentally entered a broken email address, you can repeat your registration.