only index.php is showing

[eluser]tabatsoy[/eluser]
Greetings Earthlings!!!

I'm using WAMP on my localhost and CI is working properly and when I transfer it to my webserver only the index.php is working. I changed the uri protocol and nothing happens, i tried to put index.php? and if I click on my links the index.php is still showing, when I remove the "?" in index.php and click on my links I got a 404page. My webserver is using plesk.

Please help

Thanks