Rename the file config.new.php to config.php, open it and fill out the required variables and change:
//define('4IMAGES_ACTIVE', 1);
to
define('4IMAGES_ACTIVE', 1);
Then use the mysql dump in "data/database/default" to insert the tables and basic data to your database.
Point your browser to your 4images installation folder an login with admin/admin. You will find the link to the "Control Panel" at the bottom of each page.
Jan