Hello. I connect to my Comcast Cable Modem via an Airport Express wireless network at home. I want to send a fax from inside the computer, i.e. a Word file I will create or an email. When I go to Printer/Fax inside System Preferences, I see my printer but not a modem. 1. Do I need a modem? 2. Do I need to connect a telephone cable to my MacBook Pro? 3. Do I need to buy/subscribe to a $40. service that enables me to fax from the computer?