Htaccess redirection (all except one lang)

[Alvis]

Hey, so I'm trying to figure out how I can redirect all non swedish users to the /en/ directory using htaccess

This is what I have now:

#For every other language (including English :)) use English
RewriteRule ^$ /en/index.htm [L,R=301]

But this will redirect everyone including the Swedish users, how do I make an exception for Swedish users? Or is there any other way to do this with htaccess?


Thanks.

[Markus]

How would you identify a Swedish user?