headset/mic setup for gaming

I am having problems setting up my microphone to work while gaming. I can hear people talking to me but they can not hear me. I can hear myself talking in the microphone. I have windows vista. I am not computer savvy so please forgive. Thank you for help in advance.

 

enter sound recorder in windows vista and try to record something, when you play the file again, can you hear yourself ? Cause usually the microphone works, but is disabled/not configured in-game. If you couldnt hear ureself after playing the file, try to check you have the microphone plugged in the correct spot. Then enter Control Panel, and write down in the serach box " Microphone" and click on " Set up microphone " and follow the steps provided, if that doesnt work , reply back we'll work something out.