Okay, yeah I remember having trouble with one or two of the blanks as well.
From the link I gave, click Register Account. Next you click Agree. On the next screen you have the put an email address (tho I've heard some don't work, but my sympatico.ca account worked. If yours doesn't, just make a free yahoo account or something). Next you click Transmit to send an email to your account, then you should get a link in an email to go to make the actual account. When making your account, it has to be all lowercase letters in the username (heard that gave some people trouble).