unsuccessful module installation.

if ( !defined("XOOPS_MAINFILE_INCLUDED") ) {
define("XOOPS_MAINFILE_INCLUDED",1);

// XOOPS Physical Path
// Physical path to your main XOOPS directory WITHOUT trailing slash
define('XOOPS_ROOT_PATH', '/homepages/ROOTPATH');

// XOOPS Virtual Path (URL)
// Virtual path to your main XOOPS directory WITHOUT trailing slash
define('XOOPS_URL', 'http://www.mydomain.com');

// Database
// Choose the database to be used
define('XOOPS_DB_TYPE', 'mysql');

// Table Prefix
// This prefix will be added to all new tables created to avoid name conflict in the database. If you are unsure, just use the default 'xoops'.
define('XOOPS_DB_PREFIX', 'TABLEPRE');

// Database Hostname
// Hostname of the database server. If you are unsure, 'localhost' works in most cases.
define('XOOPS_DB_HOST', 'localhost');

// Database Username
// Your database user account on the host
define('XOOPS_DB_USER', 'DBUSER');

// Database Password
// Password for your database user account
define('XOOPS_DB_PASS', 'DBPASS');

// Database Name
// The name of database on the host. The installer will attempt to create the database if not exist
define('XOOPS_DB_NAME', 'DBNAME');

// Use persistent connection? (Yes=1 No=0)
// Default is 'Yes'. Choose 'Yes' if you are unsure.
define('XOOPS_DB_PCONNECT', 1);

define('XOOPS_GROUP_ADMIN', '1');
define('XOOPS_GROUP_USERS', '2');
define('XOOPS_GROUP_ANONYMOUS', '3');

if (!isset($xoopsOption['nocommon'])) {
include XOOPS_ROOT_PATH."/include/common.php";
}
}

Other problem may be messup by myself when i tried to follow some instruction to edit some codings where i learn from some posted forum such as auto-login. But some were not succesful and result from it, a messup site.