Hi,
Thanks for your response.
I tried your suggestions but with no succes.
When I apply the solution from the first link (making-joomla-site etc) it seems to make things worse. Hyperlinks to articles result in a 404-page. Undo the changes and everything works, but with the 'anchient'-URL in the adress.
Regarding the second link: sh404sef. I wasn't known to this extension. Is it a necessity to have this installed on the site? I hadn't had on my previous sites either without having problems.
Hope you can help me out on this one.
Best Regards