Originally Posted by JC de Jonge
No worries, we're here to help each other out. And I'm happy to help someone else instead of asking questions all the time
In Photomatix you should press the "file" button in the top left corner. Then the option "open" (or simply press ctrl+o) select your solo-raw file and photomatix does the rest.
The you can use tonemapping to further adjust the photo.
Thanks for the help... maybe I was to blind or to stupid
Until now I always used three jpg files with photomatix and the single raw file with DPHDR... I'll give it a try