Don't have Norwegian Excel, but is has to do with your locale settings. You probably use the comma as the decimal separator. Then Excel will use the semi-colon to separate the fields in the CSV file.
Go to Options, Advanced and disable 'Use system separators' and use a point for the decimal and comma for the thousands.
Now save your file as CSV and you should have comma's separating the fields. When done switch back 'Use system separators' and Excel will use the comma again for the decimals.