removing ? from urls

[eluser]instantations[/eluser]
Here's a sample of my working configuration:

.htaccess

Code:

RewriteEngine on
RewriteCond $1 !^(index\.php|images|robots\.txt|css)
RewriteRule ^(.*)$ index.php/$1 [L]

application/config/config.php (only the lines invovlved shown here)

Code:

$config['index_page'] = "";
$config['url_suffix'] = "";
$config['enable_query_strings'] = FALSE;

I'm still a beginner but this works for me.