Microsoft Lifecam VX-3000

If she can hear you - your mic is fine
The most likely cause would be her mic or your speakers - did you make your speakers default in Skype?
Vista
TEST SPEAKERS
Right click on speaker icon in System Tray or from Control Panel
Select "Playback Devices"
The speaker icon ( checked as working) and volume level graph should be visible
Right click on the volume graph and click "Test"
Left hand speakers followed by right hand should be heard

check your audio out

TEST SPEAKERS
Right click on speaker icon in System Tray or from Control Panel
Select "Playback Devices"
The speaker icon ( checked as working) and volume level graph should be visible
Right click on the volume graph and click "Test"
Left hand speakers followed by right hand should be heard

SET DEFAULT & TEST MIC
Click "Recording" tab.
To set required (webcam) mic as default - click on mic font to highlight and click "Properties"
In lower dropbox display "Use this device enable" click 'OK'
Click "Levels" tab and ramp up sliders ( adjust to suit later)
Return to "Recording". Test mic by speaking and make sure volume graph displays

Restart computer

Check that the correct recording device is set as default in sound properties.
Control panel / sound / playback
right click on your mic and set as default, you can also test it there

TEST SPEAKERS
Right click on speaker icon in System Tray
Select "Playback Devices"
The speaker icon ( checked as working) and volume level graph should be visible
Right click on the volume graph and click "Test"
Left hand speakers followed by right hand should be heard

SET DEFAULT & TEST MIC
Click "Recording" tab.
To set required mic as default - click on mic font to highlight and click "Properties"
In lower drop-box display "Use this device enable" click OK
Click "Levels" tab and ramp up sliders ( adjust to suit later)
Return to "Recording". Test mic by speaking and make sure volume graph displays
Restart computer

go into sound (volume) and do a MIC check......if theres no sound there. they wont be able to hear you either....NOT all camers have a mic in them.....

You have to go to your control panel, click sounds, and find the microphone, when you go to properties it will have an adjustment bar.

I had this problem and just discovered this last night after having this webcam for 3 months!

HI,
OK, you need to do the following to turn off your Webcam Mic.

1. Right Click On Volume Icon in System Tray
2. Click Open Volume Control
3. Click On Options When The Mixer Appears.
4. Select Properties
5. Adjust The Volume For Recording
6. Then Just Look For The Mic Channel on the Mixer & Set it to Mute or if ut's not available, turn the Volume Fader for the Mic Right Down,

Should Have Something Like The Below Settings

you need to install the device driver.

Microsoft LifeCam VX-3000

Logetech Pro 9000

enjoy, and please rate my solutions

I have seen situations in the past where a woman especially would not modulate her voice well enough to make good sound on her mic, other then that, make sure your mic volume is set fairly high. Also if the situation is not cleared by the previous two suggestions look for newer audio drivers for your system ( whatever that may be ), a.k.a. motherboard audio driver or sound card drivers depending on what hardware you have installed

do a cam/mic test in the audio/video settings in the tools tab in yahoo/msn. Then you need to minimise the yahoo/msn screen and right click on the cam icon in the taskbar and check that the mic and cam are enabled and that it is set to allow other programes to take control of this device