I think you are saying you have in Audacity Device Toolbar:
Audio Host: MME
Output Device: Speakers realtek
Input Device: Microphone realtek
Channels: 2 stereo
Right? That looks reasonable for now.
Look at this link
http://www.cyberacoustics.com/store/Pro ... icrophones - Does your mic look like CVL-1064 on that page? Or is it a headset where the mic is built into the headphones like these
http://www.cyberacoustics.com/store/Products/Headsets ?
If the mic is standalone like CVL-1064, plug it into one of the pink ports on the computer. If one pink port does not work, try another pink port. Look at all sides of the computer for where the ports are or look at your computer Manual.
If it is a headset, plug the jack that has the green colour into one of the green ports in the computer and plug the jack that has the pink colour into the pink port that is next to that green port.
Without pressing the record button in Audacity, speak into the mic or the headset. Do you see the green meter bouncing in Windows (where it says "Microphone" here)?
You need to see that green meter bouncing before you can record in Audacity.
Gale