Ne wproblems with installing Drupal

It`s windows, the php is version is 4, it has MySQL, my host is Infinology & that`s all I know.

Here`s the settings.php file (or at least the best of how this forum will display it):

<?php
// $Id: settings.php,v 1.27 2006/04/24 19:25:37 dries Exp $

/**
 * @file
 * Drupal site-specific configuration file.
 *
 * The configuration file to be loaded is based upon the rules below.
 *
 * The configuration directory will be discovered by stripping the
 * website's hostname from left to right and pathname from right to
 * left. The first configuration file found will be used and any
 * others will be ignored. If no other configuration file is found
 * then the default configuration file at 'sites/default' will be used.
 *
 * For example, for a fictitious site installed at
 * http://www.drupal.org/mysite/test/, the 'settings.php'
 * is searched in the following directories:
 *
 *  1. sites/www.drupal.org.mysite.test
 *  2. sites/drupal.org.mysite.test
 *  3. sites/org.mysite.test
 *
 *  4. sites/www.drupal.org.mysite
 *  5. sites/drupal.org.mysite
 *  6. sites/org.mysite
 *
 *  7. sites/www.drupal.org
 *  8. sites/drupal.org
 *  9. sites/org
 *
 * 10. sites/default
 *
 * If you are installing on a non-standard port number, prefix the
 * hostname with that number.  For example,
 * http://www.drupal.org:8080/mysite/test/ could be loaded from
 * sites/8080.www.drupal.org.mysite.test/.
 */

/**
 * Database settings:
 *
 * Note that the $db_url variable gets parsed using PHP's built-in
 * URL parser (i.e. using the "parse_url()" function) so make sure
 * not to confuse the parser. If your username, password
 * or database name contain characters used to delineate
 * $db_url parts, you can escape them via URI hex encodings:
 *
 *   : = %3a   / = %2f   @ = %40
 *   + = %2b   ( = %28   ) = %29
 *   ? = %3f   = = %3d   & = %26
 *
 * To specify multiple connections to be used in your site (i.e. for
 * complex custom modules) you can also specify an associative array
 * of $db_url variables with the 'default' element used until otherwise
 * requested.
 *
 * You can optionally set prefixes for some or all database table names
 * by using the $db_prefix setting. If a prefix is specified, the table
 * name will be prepended with its value. Be sure to use valid database
 * characters only, usually alphanumeric and underscore. If no prefixes
 * are desired, leave it as an empty string ''.
 *
 * To have all database names prefixed, set $db_prefix as a string:
 *
 *   $db_prefix = 'main_';
 *
 * To provide prefixes for specific tables, set $db_prefix as an array.
 * The array's keys are the table names and the values are the prefixes.
 * The 'default' element holds the prefix for any tables not specified
 * elsewhere in the array. Example:
 *
 *   $db_prefix = array(
 *     'default'   => 'main_',
 *     'users'     => 'shared_',
 *     'sessions'  => 'shared_',
 *     'role'      => 'shared_',
 *     'authmap'   => 'shared_',
 *     'sequences' => 'shared_',
 *   );
 *
 * Database URL format:
 *   $db_url = 'mysql://username:password@localhost/databasename';
 *   $db_url = 'mysqli://username:password@localhost/databasename';
 *   $db_url = 'pgsql://username:password@localhost/databasename';
 */
$db_url = 'mysql://username:password@localhost/databasename';
$db_prefix = '';

/**
 * Base URL (optional).
 *
 * If you are experiencing issues with different site domains,
 * uncomment the Base URL statement below (remove the leading hash sign)
 * and fill in the URL to your Drupal installation.
 *
 * You might also want to force users to use a given domain.
 * See the .htaccess file for more information.
 *
 * Examples:
 *   $base_url = 'http://www.example.com';
 *   $base_url = 'http://www.example.com:8888';
 *   $base_url = 'http://www.example.com/drupal';
 *   $base_url = 'https://www.example.com:8888/drupal';
 *
 * It is not allowed to have a trailing slash; Drupal will add it
 * for you.
 */
# $base_url = 'http://www.example.com';  // NO trailing slash!

/**
 * PHP settings:
 *
 * To see what PHP settings are possible, including whether they can
 * be set at runtime (ie., when ini_set() occurs), read the PHP
 * documentation at http://www.php.net/manual/en/ini.php#ini.list
 * and take a look at the .htaccess file to see which non-runtime
 * settings are used there. Settings defined here should not be
 * duplicated there so as to avoid conflict issues.
 */
ini_set('arg_separator.output',     '&amp;');
ini_set('magic_quotes_runtime',     0);
ini_set('magic_quotes_sybase',      0);
ini_set('session.cache_expire',     200000);
ini_set('session.cache_limiter',    'none');
ini_set('session.cookie_lifetime',  2000000);
ini_set('session.gc_maxlifetime',   200000);
ini_set('session.save_handler',     'user');
ini_set('session.use_only_cookies', 1);
ini_set('session.use_trans_sid',    0);
ini_set('url_rewriter.tags',        '');

/**
 * Variable overrides:
 *
 * To override specific entries in the 'variable' table for this site,
 * set them here. You usually don't need to use this feature. This is
 * useful in a configuration file for a vhost or directory, rather than
 * the default settings.php. Any configuration setting from the 'variable'
 * table can be given a new value.
 *
 * Remove the leading hash signs to enable.
 */
# $conf = array(
#   'site_name' => 'My Drupal site',
#   'theme_default' => 'pushbutton',
#   'anonymous' => 'Visitor'
# );