How do I activate and use the Dell Inspiron 1525 integrated webcam?

I realize that I am lame, but nevertheless, I cannot figure out or find out how to enable and use my integrated 2.0 megapixel webcam on my Dell Inspiron 1525. I bought the computer used and have no booklets. Help and Support on the Start Button has only one entry when I search webcam (frankly, I'm not sure if that's help for the computer or Vista). Google has been fruitless after about 45 minutes of various searches. I couldn't find a messageboard discussing this, something I've been able to do for other problems in the past. I've pressed the Dell Media Direct button hoping to find a lead. I've looked on the control panel with no luck. Really, I know next to nothing about computers, but I have made a good faith effort to get this answer without luck. Bottom line is I need basic directions. How can I use my webcam on the internet both with people with webcams and those like parents without? What do I click or push to make it work, or do I need to download some driver or find some set-up wizard other item first (these are new terms for me just discovered in this fruitless search). Please assume you're communicating with a complete idiot basket case who knows relatively little jargon.