<IfModule mod_rewrite.c>  

# Turn on 
Options +FollowSymLinks
RewriteEngine On


RewriteCond %{REQUEST_URI} !\.(css|gif|ico|jpg|js|png|swf|txt|eot|ttf|otf|woff)$
RewriteCond %{REQUEST_URI} !captcha\.php$
RewriteRule (.*) index.php [L]
</IfModule>