How do i use this web cam with my ps3?

May be...

how can i use a D-Link DSB C-100 Version B with my ps3? i plug it in but then it says unknown USB device found. what do i do?

You can't do anything if it said unknown usb device found try getting a ps3 eye not all web cams work with ps3

u cant use usb things thatr not found. i have a ps3 eye and that works. u should get 1 if u want to use an webcam on ur ps3