Web cam software

I accidentally removed the software to my webcam and downloaded a driver, but still says camera isn't connected. Do I need additional software and if so, where do I find it? I tried calling micro innovations tech support and was on hold for 45 minutes. I gave up and figure they arent there due to the holiday. I had to do this once before after computer repair and everything was fine. They talked me through the set up process over the phone though. Please advise.