If people have trouble hearing you, boost your microsoft level.
Windows 7 Microphone Boost
To boost your microphone level in WIndows 7
- Click Start | Control Panel | Hardware and Sound | Sound
- Open the Recording tab
- Select Microphone then Properties
- Open the Levels tab
Note: If you only see a General tab, plug in your microphone to see the Levels tab - Set the Microphone Boost to an appropriate level (it changes realtime)
- Click OK when done