I have a new coputer resentl I seted the mic it was working know I don't know why stoped, volume is ok pls HLP?

On vista and win 7, right click the speaker icon. Then recording devices. Right click your mic and set as default. Then press conigure/test. It will guide you through the setup process. You can use a USB headset/mic combo for better quality depending on how expensive the headset is that makes better quality.