I want to contact applecare, but can't find the link to start a session. Anyone know were it is? I've used there email/chat room about 1 year ago, but can't find it. My problem is: trying to setup a microphone. I've set it to line in etc, when i talk there is nothing on the meter?? sys prefs - Sound - input - audio line-in port. input vol is max - input level is nothing!!!?