I using Windows XP Professional, and I have networkcard and modem installed and I using dial up when I going to internet. I am not connected to network, and I dont have wireless networkcard. I have latest virussoftware and automatic update. My computer didnt be online when I suddenly started hear like " ham-radio" conversations from my speakers. I heard when one person talk to somebody, but I didnt hear that other one. How computer can pick up somebodys conversation and how I get rid of that? Anyone seen that happens?