I used an AOL name several years but have been using a .mac for at least three years. Do I need to do anything?

If you are no longer using the Apple ID with your AOL User Name, and you do not have any purchases that you may want in future tied to that ID, you don't have to do anything. If you think you may ever want to access past purchases done on that ID, you need to change it to a valid email address.

Cheers,

GB