Not a question anymore, because I made a little tool which will do that :
http://vklaffehn.vk.funpic.de/hdviewreasm.zipJust select one of the 'l_X' folders, 'l_0' is lowes resolution, the last is full resolution, wait a while and save the image as .png at the end. Not perfect, but does the job :-)
I needed it because i lost some fotos and only had the HDView panorama on my harddisk....
Feedback welcome!!
Mfg
V.Klaffehn