Below are links to several good pages which explain how to get Scandinavian characters from an English/American keyboard. I usually just cut and paste them!

Norwegian characters:     Å    å   Æ  æ   Ø   ø

• http://symbolcodes.tlt.psu.edu/bylanguage/nordic.html
• http://sydaby.eget.net/emig/emig/scands.htm