I have a gear head webcam but i cant work it..?

i was given a gear head camera(just the webcam itself. it has a USB and sound plug. no book, no pamphlet no nothing) and i haven't ever owned a webcam so I'm not sure what to do. I tried to install something from online but it didn't work. And obviously just plugging it in ain't doing nothing so i would just like to know what i should download in order to get it to work :) thanksss