I am a former blackberry user, and enjoying almost everything about my new Iphone 3GS, but having terrible trouble with only one specific issue. I am trying to accomplish two things on my Iphone simultaneously: 1) receive Push email; and 2) make my replies to emails appear to come from my firm's domain ("firm.com"). I signed up for MobileMe, and had all of my emails forwarded to my me.com account. This has worked well to solve the push issue, and now the emails appear on my Iphone instantly. Good so far. My problem is meeting the second goal of making replies appear to come from my firm.com address. On my Blackberry, this was easy, and although my replies were routed to and from my "blackberry.net" account, the appeared to come from firm.com, just as if they had been sent from my desk. MobileMe however, seems unable to do this, and aliases are limited to other me.com names. This is unacceptable to me. I have asked both the Apple Store staff, as well as MobileMe Support, if I can solve this problem, and neither have been able to. Before I am forced to return the phone however, I thought I would let the real experts at this issue, and see if this problem can be solved. Is there any way I can receive push email (it doesn't have to be Mobile Me, but I do not have access to MS Exchange Server) and be able to make my replies appear to come from my firm.com email address. Many thanks in advance.