Outlook 2007 national charaters
 

After I installed Outlook 2007 I got a strange error.
I have English Win XP sp2 with Outlook 2007, when I receive e-mail from Win
Xp with English Outlook 2003 the representation of norwegian æøå and ÆØÅ is
wrong and a extra first line in the text:

"charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable"

In the text
"Ã¥" is replaced by "=E5"
"ø" is replaced by "=F8"
"Ø" is replaced by "=D8"

Is there a problem with my or my friends installation?
Is there a error in the new Outlook 2007?
Or could it be something other that is wrong?