We had another Finnish visitor awhile back who explained about the double i's. If I remember correctly, I think she said the double i is pronounced as a long vowel. Is this correct?
One of my favorite names-list sites is Rea Uotila's
http://www.geocities.com/Athens/Acropolis/1786/Reality/dirnimi.html
She's a names connoisseur living in Finland, and she includes many lovely Finnish names in her lists.
-- Nanaea