My understanding is that language packs are not usually made by telligent, instead by community efforts.
Given that CS2008 has only jsut been released, I'd be suprised if such a language pack were available however I can't find one for CS2007, so I'd say the chances of someone translating CS for sweedish soon is fairly unlikely, and so you'd probably have to go through the language resoruce files and translate them yourself. If you are looking at going down that route, I can give you a link to a tool which I believe many translators have found helpful.
There's light at the end of the tunnel, or is it just an oncoming train...
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