Db error

[Symbian Galaxy]

Invalid SQL:

SELECT * FROM user AS user
LEFT JOIN usergroup AS usergroup ON (user.usergroupid = usergroup.usergroupid)
WHERE user.username = ''Pac';

MySQL Error : You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'Pac'' at line 3
Error Number : 1064
Date : Thursday, August 16th 2007 @ 02:53:35 AM
Script :
Referrer :
IP Address :
Username :
Classname : vB_Database



Please help me out please!

There is an other problem. "Fatal error: Class 'vB_Mail' not found in /home/thesymbi/public_html/includes/functions.php on line 808"

new error while login