If the microphone is not working with this application, I recommend that you update your audio drivers. Just go to Start, type dxdiag, and open the utility. Click the Sound tab, check your audio card model, and download and install the latest drivers from the developer's web page. Also, download and install the latest version of Yazak Chat and make sure that the mic is plugged in the pink/red jack of your computer. If the issues persist, you will need to purchase another microphone. You can use Google search engine to find an online store.