CSS and LANGUAGES

I’m creating a site using flash and dreamweaver, in the flash part I have buttons with a code applying a css to a externally loaded text file, and all is fine so far. BUT, the site is in norwegian, and my “[COLOR=DarkRed]æ,ø and å[/COLOR]” letters won’t show properly. (don’t know if u can see the letters, they are typical of the norwegian alphabet).
So my question is: Does CSS support different languages?
The font supports it (Arial).
And i have made sites before (not using CSS), and the letters have worked just fine…

Greatfull for any help and tips…