Okay, strange... I'm not very experienced with phpbb so I don't know of any specific problems that might be causing it.
Did you install the script through Fantasico or did you upload and install it yourself? Can you confirm that all the files are actually in that directory?
Maybe try...
Yep, a page title would be good. The design and colours of the site are fine, though it'd be better if it was wider/fluid. You should create a nice logo to match it. The left side feels a bit bare, imo. Maybe some more content or navigation there would help.
5/10
Looks nice, the layout is nicely done, and I've got a weakness for things that change colour on hover. :biggrin:
Is that underline supposed to stay on the home button?
EDIT: Nevermind, saw the shoutbox.
I'm not familiar with vB's database structure, but there should be a column in your user table that controls what group the user exists in; you can change it manually through there.
EDIT: Oh... Are you saying you deleted the Administrator usergroup?
That's right. Try and make a list of what you must have, or what you really want to have in a CMS, search for a product that matches your needs. If you get multiple choices, take a look at their other features and ask yourself what others would benefit you.