1. Get a pair of headphones.
2. Stick them into the microphone slot.
3. Go to: Start > All Programs > Accessories > Entertainment > Sound Recorder.
4. Put your headphone next to your mouth.
5. Press record.
6. Shout out while its bieng recorded.
7. Stop recording.
8. Play and listen to your voice.
Enjoy
PS. Worked with all the headphones i tried with.