[Lynne]

When you get a page like that, view the page source to see the actual error:

<!--
Database error in vBulletin :

mysql_connect() [&lt;a href='function.mysql-connect'&gt;function.mysql-connect&lt;/a&gt;]: Access denied for user 'pokeoak'@'localhost' (using password: YES)
/home/pokeoak/public_html/includes/class_core.php on line 311

MySQL Error   : 
Error Number  : 
Request Date  : Wednesday, September 23rd 2009 @ 05:48:06 PM
Error Date    : Wednesday, September 23rd 2009 @ 05:48:06 PM
Script        : http://www.pokeoak.com/
Referrer      : https://vborg.vbsupport.ru/showthread.php?t=223832
IP Address    : xxxxx
Username      : 
Classname     : vB_Database
MySQL Version : 
-->

It looks to me like you have changed the info in your config.php perhaps? Right now, it can't connect to your database because access is being denied to that user.