Looks like we both found the same programs on our search.
The diabolius probably won't work because it is based origanaly on neutrino and rewritten for enigma, but this was allready years ago.
No updates since then.
I managed to install the QT Webbrowser, but it didn't work.
Maybe because you also need to install usb drivers for a wireless mouse and keyboard.
I've seen pictures in the internet, showing the QT Webbrowser at work, so it must be possible.
But everybody says it's slow and unstable.
Probably because our dreambox 800 has only a 300MhZ processor.
You will also have to install/alter certain xml files to make it work.
It's not like a normal browser where you just click and you can surf the world wide web.