For another link about Norwegian alphabet and pronunciation:
http://library.thinkquest.org/18802/norwlang.htm?tqskip1=1&tqtime=0729

These three characters are Æ (æ), Ø (ø) and Å (å) and they
come in that order right after Z in the alphabet. They are
pronounced as the vowels in "sad", "bird" and "four".
Computer keyboards sold in Norway have three more keys
than standard English keyboards, one extra key for each extra
letter.