Dell inspiron 1545 webcam not detected issue/ Help

Hi, Just bought a secondhand Dell inspiron 1545 32 bit on vista, immedietly upgraded to windows 7 Noticed there is a camera on my laptop, but i have no program to use it, the camera is not listed in device manager, i have the origional webcam disc that came with the laptop, installed it but once program starts up, get message on webcam application saying in no uncirtain terms "cannot find supported webcam". I have been to dell support page, cannot find any drivers for webcam under m laptops spec, only old spec vista which im not running, but i downloaded anyway and tried to install but got error message saying once again in no uncirtain terms, install failed, also tried installing driver using compatibility mode for vista which diddnt work either, just got errror message, so i uninstalled all webcam software and drivers...which brings me here now as i have no idea where to go next as i feel ive tried everything... Can anyone help or provide the drivers or point in right direction?

Much appreciated Many thanks