I'm not sure I understand your question.
If you are going to Sweden, you will want Swedish Crowns (Kroner?). As far as I know ATM's in Sweden will dispense crowns only. I've never heard of an ATM that would also dispense Euros in Sweden.
An exchange booth or bank would be able to sell you some Euros but it won't be as good of deal as waiting to use an ATM when you arrive in a country that uses the Euro.
If you are traveling on to Finland or back toward Germany, which use Euros, you can pick up Euros at an ATM in an airport, train station or just about anywhere once you arrive in Finland, Germany (or other destination that uses Euros).
Denmark and Norway also use their own version of the crown but they are each unique currencies and only work in that country (without an exchange loss, think US and Canadian dollar).