This is what I used when setting Zend Framework on a dedicated 1and1 server.
in .htaccess
Code:
AddType x-mapp-php5 .php
RewriteEngine on
RewriteRule !\.(js|ico|gif|jpg|png|css)$ index.php
in php.ini
i
Code:
nclude_path ="/homepages/**/***********/zend_library"
I was getting the 500 error before adding the php.ini file