At the risk of stating the obvious and you telling me to butt out, have you tried the knowledge base on the Symantec site?
From what I've seen of it in the past, it doesn't cover every eventuality but may have something that relates to you

Nortons is cool though, if you can get it sorted, it's well worth sticking with, even if you don't have any hair on your head by the end of it.
Edit. Forget that. Just had a quick look at the knowledge base and it's not going to help you. Think you've got all the stuff on there sussed already.