I'm working on a MacBook Pro with Leopard and I'm trying to set up Mail. Specifically, I want to import about 500 email addresses I have in a spreadsheet, but for the life of me I can't make it work. After successfully importing from a text file directly into Address Book, I can't figure out to automatically change all of the addresses from "Do Not Import" to something else. And even in my trial run of 3 addresses, when I change them manually and click "Ok," they don't show up in the address book. Can someone step me through this process or tell me where I'm going wrong? It's quite frustrating. Thanks.