You just have to check the install script xD
$query[]="CREATE TABLE user (
userid int(10) unsigned DEFAULT '0' NOT NULL auto_increment,
usergroupid smallint(5) unsigned DEFAULT '0' NOT NULL,
username varchar(50) NOT NULL,
password varchar(50) NOT NULL,
email varchar(50) NOT NULL,
styleid smallint(5) unsigned DEFAULT '0' NOT NULL,
parentemail varchar(50) NOT NULL,
coppauser smallint(6) DEFAULT '0' NOT NULL,
homepage varchar(100) NOT NULL,
icq varchar(20) NOT NULL,
aim varchar(20) NOT NULL,
yahoo varchar(20) NOT NULL,
signature mediumtext NOT NULL,
adminemail smallint(6) DEFAULT '0' NOT NULL,
showemail smallint(6) DEFAULT '0' NOT NULL,
invisible smallint(6) DEFAULT '0' NOT NULL,
usertitle varchar(250) NOT NULL,