Please Help to remove index.php from url

[eluser]GeLiNa[/eluser]
Hello, I'm a newbie in CodeIgniter. I followed the user guide, but I can't remove index.php from url.

Condition:
1. I use Wamp Server.
2. My Base url is: http://localhost/trial/
3. My CI url is: http://localhost/trial/application/
4. I set $config['base_url'] = 'http://localhost/trial/'; and $config['index_page'] = ''; in config.php
5. I put the .htaccess file in the same folder with index.php (http://localhost/trial/)
6. My .htaccess file content:

Code:

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

and I've also tried some other .htaccess which I find in this forum, like:

Code:

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

or any toher else.

I also tried to add this like some people in this forum suggest

Code:

RewriteBase /trial/

But the result is always same, and it happened even if I include the index.php in the url as long as the .htaccess file is there:

Code:

Internal Server Error

The server encountered an internal error or misconfiguration and was unable to complete your request.

Please contact the server administrator at admin@localhost to inform them of the time this error occurred, and the actions you performed just before this error.

More information about this error may be available in the server error log.

I've tried many things in this forum, but none of them resolve it. Can someone help me, please?