Convert XML to CSV and convert special signs.

Hi We have 4 XML files (attached) that need to be converted in to CSV files. Delete all info for SE and DK languages. All text within <INTRO_NO> </INTRO_NO> and <TEXT_NO></TEXT_NO> and <NAMN_NO></NAMN_NO> the special signs has to be converted according to list below: Å &Aring; å &amp;aring; Ä &Auml; ä &amp;auml; Ö &Ouml; ö &ouml; < &lt; / &fnof; > &gt; " &rdquo;