I must say I think DQ gives EXCELLENT advice, especially for someone who isn't even a parent yet!
I like the suggestion of trying to give her some other responsibility that maybe isn't as "chorish". I agree you have to teach her some responsibility, but a war may not be worth it.
I only have a 3 year old, so I don't have these issues yet. I have tried to start already having him help around the house, but so far if I mention the word HELP he is at my feet in seconds. I remember my little brother being the same way at that age and that certainly changed!
So far he has to help me clean his room a few times a week. He has to pick up any toys he leaves in other areas of the house by himself. And he helps me put groceries away! He actually ASKS for chores at this point, he'll ask if he can set the table or help me make dinner. He's so cute.
We'll see how long that lasts.