I am trying to embed Google Adwords from a website that was developed using CodeIgniter, I believe it requires a status code of “200” when they add the GET variable to the URL.
I get emails from Google saying that it receives a 404 status code when it goes to my URL. When am I trying to add? Test = test at the end of my url, it really returns 404:

Through my google searches I found this useful link:
http://codeigniter.com/forums/viewthread/154153/#746115
In what states do I need to change my configuration to enable them:
$config['uri_protocol'] = "PATH_INFO";
$config['enable_query_strings'] = TRUE;
uri_protocol "REQUEST_URI". test = test, ! , PATH_INFO, , ?
Mod Rewrite, URL-, mydomain.com/blog, mydomain.com/about, . uri_protocol, , GET 404?
!
UDPATE: htaccess :
RewriteEngine on
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ /index.php?/$1 [L]