Ok i'm back...after several new publish and delete and over and over..
There is some movement.. but now the guestbook on the page is no longer white, but within the Guestbook-box there is the Internal Server-message..

I'm sorry if you're getting tired of me...but i'm really trying hard, if that's any help ;)

The link is now: www.carolinevandereerden.com/guestbook.html