|check webcam is connected correctly|
any software that comes with it should be installed
download latest version of MSN (live)
on msn contacts main screen there is options > webcam + audio setup. Go in there and run through it. make sure webcam is detected and working.
On my msn there is video call too but there is also webcam only. i havent used msn for a whiole but look around in window and it should be there