If you are just now registering an account, you will have to put in a valid email address to register. You will get an activation email, to finish the process.
I'm sorry I had to do that, but its required to keep the spammers and lunatics at bay.
Also, I just manually activated quite a few accounts. If you were waiting, you are most likely activated now.
I just did a test registration, and the emails are being sent out. I found the email in my spam folder though. 
-Scott