Mac newbie here.....learning the ropes on my new 24 iMac. I have a few sets of questions about Mail and iChat.....very basic: 1) Do I even need "Mail" in my dock?? I use yahoo and a work e-mail account. I don't think I need to even set up a ".mac" account, do I?? Is this "Mail" item strictly for ".Mac" paid subscribers? If I'm not planning to sign up as a paid .Mac person or dump my work and web e-mail into the "Mail", do I even need it?? 2) I've read I can set up a free ".Mac" account that will allow me to use iChat. Does signing up for this free account give me any other benefits or features?? Now, if all my friends and family are PC users in the Microsoft IM world, will iChat even be of use to me?? I really hope so, as it looks very impressive in the store and I'd like to run it myself. Thanks in advance for your comments.