Bad/blown voltage regulator.

Fortunately, that should be a simple user-replaceable part.
Check the vehicle manual to find out for sure.

EDIT: Hmmm.. it seems that many places overprice the regulator,
in hope that you'll just buy an entire new/refurb. alternator instead
(the regulator is usually located inside the alternator).
/EDIT


Cheers


Edited by mlord (02/12/2007 12:13)