I just bought a MacBook. I also own an iMac. I have .mac account. I want to be able to video chat with my family when I am away with my MacBook. I downloaded the mac version of AIM, but it appears you can not video chat with the mac version. Do I need to upgrade to a family pack .mac account in order to get another screen name, or can I do it with my single .mac account? Thanks for the help.