I'm confused by your question.
Your "Mac email address"... are you referring to an email address @mac.com? Or are you referring to hiding your contact information?
I believe they're talking about the contact information in Mail.
I am referring to the one @mac.com. I don't use my address book, so m y name is not in there.
Ziggy: For some reason when I change it that way, it does not allow me to send mail. Do I need to address something else with it?
Thanks Ziggy. I was able to do it through the mobileme account website, but not my regular desktop mail program on the Mac.
When I do as you suggested, it does not allow me to send mail. In my mail preferences there are two sections titled "description" and "email address", but nothing that says "email account".
username@mac.com, alias@mac.com