Hey, that actually worked =)
But i guess now that the encoding that i specify in the xsl will be overruled and all transformations will be to UTF-8? What can be done about that? Add an extra argument?

Adding that switch just sets your platform default encoding - that is,
any operation that involves an encoding where one hasn't been
specified will use the platform default encoding, which in your case
was probably ISO-8859-1.  That encoding didn't contain a mapping for
the character you are trying to output, so ? is used instead.  Now
that the platform default encoding is set to UTF-8, that does contain
a mapping for your characters and so the correct bytes are written to
disk.

The goal with encoding is to ensure all encodings match - the encoding
that is used to read the XML file must match the encoding in the XML
prolog, and equally the encoding that is used when the result is
written to disk must match the output encoding specified in the
stylesheet.  Common sense really.

cheers
andrew