I have a person that got married and thus changed her last name, so we have to create a new NT account and new email address. The question is how do I transfer all of her emails etc. to her new mailbox? Thanks

I figured it out on my own. I have to use ExMerge to do this task.

I just wanted to say that you could have just changed her name and added an e-mail alias of the new name to the account. There really isn't a need for a new account unless a policy in your company states there needs to be.