What version of Apache is required ?

Try :

Code:

RewriteEngine on
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule .* index.php?/$0 [PT,L]

and in config :

Code:

$config['base_url'] = '';
$config['index_page'] = '';

Website : www.my-web-projects.com