My speakers will not function. Yes, they are plugged in and yes they are turned on. But everything that involves sound says an audio device is not detected. My speakers are new and are plugged into the right slot on the back of my modem...ideas??? Gateway, Microsft Windows XP Proffesional Version 2002 Service Pack 2 E2300 Intel(R) Cerleron (R) CPU 2.66GHGz 240 MB of RAM.