2
Just change the following and nothing else:
define( 'XOOPS_DB_HOST', 'localhost' ); //Normally just leave this as is, unless specified by your server provider
define( 'XOOPS_DB_USER', 'change the database user if different' );
define( 'XOOPS_DB_PASS', 'Change the password of the database if different' );
define( 'XOOPS_DB_NAME', 'Change the name of the database if different' );
And nothing else needs to be changed
Catz