Hi,
thanks for the hint.
I have talked back with trolltech support and it turned out that my approach was absolutely correct except for the Visual Studio 2005 Qt-VS integration module did not display my settings correctly.

I did not want to use a flat button because of the fact that qlabel is a little more comfortable when it comes to opening an external HTML-Viewer. (A flat button requires some signal conencting to achieve the same effect...at least as far as i know...i am a little lazy )

Bye,
uglykid