I so wish Google had had this available when I was forced to hand migrate a client's email contacts from AOL to their new Gmail account. It was painful, to say the least, and horribly time consuming. I haven't yet tried this new migration with someone, but I have some candidates I am going to approach so I can use them as a test.
If you are still using AOL, do yourself a favor and check out Gmail. I have moved all my email over to my Gmail address and can now easily access it on my own computers, friends computers, my iPhone and pretty much anywhere I have an Internet connection.