Within the past 24hrs, I am having a problem with my headset (a plug and play) using my computer only...it does work on another computer...When using any program to talk with friends (ie skype ventrillo)  The other parties can hear everything on my computer through my headset speakers.I've checked all my sound OPTIONS and can't seem to find a resolution..please helpHave you checked your card it plugs into?? maybe loose or broke!!Hello,
Without more DETAIL, we can only guess. Have you recently added some additional multimedia software? This could also include games that make use of the sound system. Also, do other people use the computer when you are not there?
From your remarks it seems that you are able to hear things coming from your loudspeakers, but your MICROPHONE does not seem to be working. Some MICROPHONES have a switch, sometimes called a cough switch, which allowed to turn the microphone off so you can cough.
also, can you provide US with the name and model of your computer? And what software are you using to try to talk to other people?