Encoding pb with subject in feedback form

Monday 12 March 2007 4:25:05 am

Hi,

i want to send an email by collected information...
in my form.tpl, i used :

{set-block scope=root variable=subject}Inscription à la lettre d'information{/set-block}

but my subject in outlook is printed like : "Inscription à la lettre d'information"
there is an encoding problem as you can see...

in my site.ini.append.php :

[MailSettings]
AllowedCharsets[]=utf-8
OutputCharset=iso-8859-1
ContentType=text/html
AdminEmail=
EmailSender=

How can i correct this ??
Thanks a lot

Anthony