Basically, I plugged a webcam in. It came up with installing driver software and after that I couldn't find it. Oddly enough, it does show up in device manager

 

Any ideas?

Have you installed the drivers first? With most webcams you need to install the drivers and plug the webcam when it tells you to.

It didn't come with a instillation disk, what sites are good for downloading drivers?

Well, generally the manufacturer's website is the first place to look for drivers. However, unlike many other types of hardware Webcams don't do anything unless you install software that specifically makes use of it, such as skype for Video chat.(with skype handling all the camera settings involved)