New way to take photos (but not going too well)

Well, I got a new computer, and I have a webcam I've had for ages, and so i had the idea to take photos with it. However, it really doesn't like to focus, or at least on what I want to focus on. And, when it does focus, when I take the picture, the picture's unfocused. So yeah, unless I can fix this, I may not be taking pictures for a while.