New install...all kinds of errors

I just installed phpbbforum to integrate my phpbb3 forum with my drupal 6 page. After getting through everything and going to test it out by going to mydomain.com/phpbbforum, I get tons of errors.

The error list goes on for pages, but it starts with...

user error: in /home/moyer921/haloreachbeta.com/forums/includes/db/dbal.php on line 654.
user error: SQL ERROR [ mysql4 ]

Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2) [2002]

SQL

SELECT u.*, s.* FROM phpbb_sessions s, phpbb_users u WHERE s.session_id = '' AND u.user_id = s.session_user_id

BACKTRACE

FILE: forums/includes/db/mysql.php
LINE: 174
CALL: dbal->sql_error()

Also, outside of that big red box full of those errors, I also get:

General Error
Template path could not be found: styles/prosilver/template

I copied over the styles folder from phpbbforum as per the install instructions...