It's a 4.1 Meqa Pixel Cyber Shot camera and it's model is DSC-S60. It can also be used as a video recorder. I think you'll have a real tough time converting this camera to use it as a web cam. You can get drivers for a DV cam, but doubtfully for this one.
Even if you did, you'd have to mount it etc.. Different messaging clients will work worse or better (even if you do solve it).
I'd recommend buying a cheap USB webcam. It'll be plug and play, work in whatever software you need, and save you plenty of frustration. | 