Nostalrius Begins - Quality wow vanilla realm (1.12)

I'm not sure where else to post this, but here goes: Where do I sign up so I can play Nostalrius when it launches? I signed up for the newsletter, but I was left scratching my head, where's the part where I create a pw so I can log into the game at launch? I assumed that I needed to create a forum account, so I did just in case. Also, do I need to do anything fancy with my WoW software, such as download an independant client or simply change the realmlist? If so, please inform me. Thank you.