Hi Thanks for the answer but i dont mean that.
Look here:
http://www.mgsl.de/demo/muster-kategorie-c-32.html
It has the same title (Demo Online-Shop) like the index.php
http://www.mgsl.de/demo/index.php
How can i change that?
You can go in the admin (login:admin / pw: test)
and change it if you can :)