Both Conan and Phishhead gave you the right scoop on XP and your camera.I have an Intel C110 and XP picks up on the model and installs native drivers for it,and I downloaded newer drivers from Intel's website.I ran windows 2000 and plugged my usb cam in and needed drivers for it to work with Instant Messenger.These drivers were also available on Intel's website.Look in Yahoo's Messenger webcam setup and see if your camera shows up in your camera selection box and you will know for sure if you are at least recognised there.There should be an audio/video tuning wizard of some sort you can configure your microphone also.