Remember that this site isn’t fully integrated with the PHPBB3 Forums or with Gallery2 (it may be coming in the future). You’ll need to register with the site, the forums, and the gallery.
Until I can install some sort of spam filter, I had to turn self-registration off on the main site. When I had it on, we received a few spam accounts; something that I really want to avoid. Give me a few days (by the way, is anyone actually reading this?) and I’ll get something in place.