Beginner: Having set up problems

As a beginner I am having a few issues setting up the message board.

When I visit [piratebox.lan]
I get the following error message:

Software error:
No ADMIN_PASS defined in the configuration at config_defaults.pl line 8.
BEGIN failed--compilation aborted at config_defaults.pl line 133.
Compilation failed in require at /opt/piratebox/www/board/kareha.pl line 13.
BEGIN failed--compilation aborted at /opt/piratebox/www/board/kareha.pl line 13.
For help, please send mail to this site's webmaster, giving this error message and the time and date of the error.

I have set up the file and changed security settings using vi /opt/piratebox/www/board/config.pl
here is a screen grab:Image may be NSFW.
Clik here to view.

But is still not working.

Thanks

Martin