Database error in vBulletin

[AlShammari]

Hello

I face this problem whene I was install the vBulletin

Database error in vBulletin :

Invalid SQL:

CREATE TABLE access (
	userid INT UNSIGNED NOT NULL DEFAULT '0',
	forumid SMALLINT UNSIGNED NOT NULL DEFAULT '0',
	accessmask SMALLINT UNSIGNED NOT NULL DEFAULT '0',
	PRIMARY KEY userid (userid, forumid)
);

MySQL Error  : Table 'access' already exists
Error Number : 1050
Date         : Tuesday, September 18th 2007 @ 02:48:30 AM
Script       : http://members.lycos.co.uk/miske/install/install.php?step=3&____ord____=1190076391
Referrer     : http://members.lycos.co.uk/miske/install/install.php?step=3
IP Address   : 168.187.11.130
Username     : 
Classname    : vb_database