is it usb or regular (3.5mm jacks)?
If its 3.5mm make sure its plugged into mic and not speakers.

Turn the webcams mic right down in the sound menu and then use the webcam/headset wizard in msn to adjust it.

Its a USB, and I tried reinstalling it and turning the volume down, but both tries were unsuccessful. I thought maybe it might've been an out of date driver, but oh, silly me. And even when I turn the volume down on the volume control in the task bar, it sends a horrific buzzing noise to the person I'm talking to. The only time they DONT hear the buzzing is when its muted, and when it is, I cant speak to them at all.

thats wierd. is it a bad usb port possibly?
do you have another mic plugged in that could be interfering?
is it too near your speakers?

I gave my parents the vx3000 for Christmas and whenever we do a video call they are producing a very similar buzzing as you describe in your post. They have a CRT monitor and I was wondering if you have one too? I'm thinking that may be the cause of the buzzing. If you have found a solution to this, please let me know!

maybe as i know you get problems with screen mounted speakers and interferecne. Get a USB extension cable and try the camera away from the monitor

I finally got my VX3000 to partially work without the background noise. At least when I record a file (audio only and video and audio) I am no longer getting the noise that I had before. BTW the noise for my setup was clearly the old 60 cycle hum. I have yet to try it on IM.

I went to a second microphone plugged into the front of my HP Pavillion. Wasn't all quite that simple however, I discovered I had to go into control panel and find advanced mike options and make sure the selection for the front mike imput vice the rear was selected. Then I further discovered that every time I activated the VX3000, I had to also double click the volume control in the taskbar and UN-MUTE the microphone selection. It appears the VX3000 causes any other microphone to mute. This has to be done every time one re activates the VX3000.

Hope this helps someone out there and note that I haven't tested in a 2 way setup yet.

It's true that bypassing the VX3000 built-in microphone avoids the problem, even with IM. However, that doesn't solve the primary problem, which is that the microphone in the VX3000 is defective.

I have had one of these units since a bit before Christmas '06. Based on my success with the unit at that time, I gave one to my brother for Christmas so we could do IM. Since then my VX3000 has started acting up, and so has his. Not at first, but after a few weeks or months of use.

After lots of troubleshooting, trying to route cables differently, moving the unit away from the monitors, etc. we accidentally discovered that if we knock on the VX3000 it seems to jar something inside, and the hum goes away or is reduced significantly. To me this indicates that there is a problem with the wiring or circuit board in the unit. Possibly an intermittent or loose connection.

By now both our VX3000's are beyond the return-to-store warranty period, and would have to be returned directly to Microsoft for repair or replacement. We have not taken that step yet.

You might want to try what I tried to 'fix' the loose connection. Flick your fingertip against the front or side of the unit while you are in an IM session, and watch the microphone display to see if the 'output' indicated goes down. When the hum is present the MSN Messenger microphone meter will be quite high. The meter should show something only when you are actually speaking.

Thanks Phong - I'll bet that you are right. I've also found that even with the background noise the microphone seems to work intermittedly. We need someone, electronicqally proficient, to take the thing apart and troubleshoot. Quess that wouldn't be Microsoft.

I have the same thing with 2 lifecams vx3000 and vx6000 ((. the vx3000 started buzzing after about 4-5 months while the 6000 was bad almost right from box. I'm gonna play with the interference idea tomorrow.