My config.php
$db_servertype = "mysql";
$db_host = "****";
$db_name = "****";
$db_user = "****";
$db_password = "****";
$table_prefix = "4images_";
define("4IMAGES_ACTIVE", 1);
$captcha_enable = 1;
$captcha_enable_comments = 1;
$captcha_enable_upload = 0;
$captcha_enable_registration = 0;
$captcha_enable_postcards = 1;
$captcha_path = './captcha';
$captcha_chars = "abcdefghjklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
$captcha_length = 4;
$captcha_wordfile = 0;
$captcha_width = 160;
$captcha_height = 70;
$captcha_text_color = "#000000";
$captcha_text_size = 25;
$captcha_text_transparency = 60;
$captcha_filter_text = 1;
$captcha_filter_bg = 1;