You can create a KONAMI ID by heading to the following website - https://id.konami.net/login.do
Click the 'Register' button to get started and follow the on screen instructions. A KONAMI ID is free of charge and it is important to have a valid email address to use for account verification.
For more information about the KONAMI ID in general, please visit the FAQ section of the KONAMI ID site. You can find it here: https://id.konami.net/faq.do