Before I go ahead and install PA-Writer - on my iMac G5. Does your program accepts Danish & Swedish letters?
Danish Example: Æ, Ø, Å - æ, ø, å. Swedish: Å, Ä, Ö - å, ä, ö.
PAWriter uses the MacRoman character set, and all of the letters you mentioned and more are included in the MacRoman character set. So you should have no problem. A complete chart of MacRoman characters is given at: