>>
>> Quotations are not on the komafont-list either, sorry, so you
>> proabably
>> have to change them in the similar way that Jürgen suggested changing
>> the marginpars.
>
>I would love to do that - but I do´t know how. What could I insert
>instead of "marginpars"?
This will give you a smaller font (footnotesize) for quotations in the
whole document if put into the preamble:
\let\oldquotation\quotation
\renewcommand*\quotation{\oldquotation\footnotesize}
You could even add fontfamily (\sffamily) and alignment (\raggedleft)
along with footnotesize if you want.
Ingar