Note: This requires Apache's mod_rewrite extension.

1. Add the following mod_rewrite rule to your .htaccess file:

RewriteEngine On
RewriteRule ^([a-zA-Z0-9_-]+)$ index?sticky=$1 [QSA,L]

2. Open the file saf/lib/CGI/CGI.php and change:

if (strstr ($_SERVER['REQUEST_URI'], '?')) {
    $uri = urldecode (substr ($_SERVER['REQUEST_URI'], 0, strpos ($_SERVER['REQUEST_URI'], '?')));
} else {
    $uri = urldecode ($_SERVER['REQUEST_URI']);
}

to:

if (strstr ($_SERVER['REQUEST_URI'], '?')) {
    $uri = urldecode (substr ($_SERVER['REQUEST_URI'], 0, strpos ($_SERVER['REQUEST_URI'], '?')));
} else {
    $_SERVER['REQUEST_URI'] = '/index/' . $_GET['sticky'];
    $uri = urldecode ($_SERVER['REQUEST_URI']);
}

You should now be able to access any page without the /index/, for example:

http://www.example.com/contact
http://www.example.com/products