Hello,
most probably it's the .htaccess file that redirects everything /index.php - try to add

RewriteCond %{REQUEST_URI} !^/images/
RewriteCond %{REQUEST_URI} !^/somefolder/

at the end and you should be able to access them again

I added the code to the .htaccess file and nothing happened ...

Hello everybody,
I'm very sorry if I'm posting this in the wrong forumsection but this was not an installation error.

The thing is that I installed Serendipity in the /www root of my domain. Now when I try to access any other subdirectory of my domain I always get redirected to the root page of ...