This is not any Hardware or Software tweak that converts your PC headphones into MIC but is only simple trick that will do the task.

It was just a coincidence that I came across this trick. What happened is while connecting the Headphones to the PC i connected it to MIC Jack and got the option as shown below and just fro curiosity; just clicked ok.

And too my surprise when I tested it in Windows Sound Recorder; the headphone I have plugged in was working as if there was a mic plugged in.

So wanted to get the steps… go on..

1. Connect your head phone to the pink jacket of the sound card.
2. Now open any sound recorder software and start recording.
3. Now take the head phone near to your mouth and speak loudly.
4. You will notice the sound recorder recording tour noise.

So from now on even if you don’t have a mic at home? don’t worry your head phone can do the job.