I just recently purchased a microphone (my first ever) to talk and play tf2 with my brother in a different city. Is there a way where you can communicate to a single person without having to talk to everyone on the server? I know in Steam you can set up a "phone call," but that only stays active momentarily and doesn't seem to work in game. I heard something about special programs that are like voice instant messaging that could possibly do what I need. Is there anyway to get this to work? Can these programs be set up where you have to press a certain key in order to communicate? Thanks in advance for your help.