I love apples own built-in dictionary. It's so accessible and easy to use when you just have to double tap with three fingers on a word, available in all applications.

But i'm actually from sweden, and it would be great to have a swedish dictionary built-in the same dictionary-app. So i've downloaded an XML-file, but as i can see theres .dictionary files in ~/Library/Dictionaries. So how do i do now? Am i able to convert the .XML file to a Dictionary app file?

I'm using the latest OSX Lion by the way.

Tack på förhand!