htaccess question

[eluser]alebenson[/eluser]
i have mi CodeIngniter inside a ci/ folder
www.site.com/ci/

i guess thats why the htaccess is not working.

Code:

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

what do i have to change to take the index.php off ?