Just wanted to let you know I see all your Druid questions sitting here unanswered, and I wish I could help you. I've never played a druid, and I get the immpression few others have either. So after you find all this out you will be the resident expert, look at it that way. Have you tried looking at either of these sites- they have info on the various Keeps and quests.
http://www.bgdungeon.com/bg2/
http://www.gamebanshee.com/baldursgateii/