error help plz

[Muderman24]

i have gotten this error a few times and i nedd some help on how to fix it

Database error in vBulletin 3.0.4:

Invalid SQL: CREATE TABLE `vbchat_store` (
`sid` int(15) NOT NULL auto_increment,
`s_postby` int(15) NOT NULL default '0',
`s_message` mediumtext NOT NULL default '',
`s_postime` int(15) NOT NULL default '0',
`s_foruser` int(15) not null default '0',
PRIMARY KEY (`sid`)
) TYPE=MyISAM;
mysql error: Table 'vbchat_store' already exists

mysql error number: 1050