narrative voice

hi gang,
i was just wondering if anyone had any ideas about how best to approach
an essay dealing with narrative voice in p&p. it's in regard to a specific passage but was just wondering about the question in general (also dont want to seem like i asking for people to write the damn thing). and wondering if any one had any opinions.
as it is quite hard to distinguish between free indirect speech, omniscience
etc and also when these devices start and finish
damn you jane austen for being such a fine craftsperson lol
so any ideas?