I recently installed the new version of MSN messenger onto my SL 400 (lenovo) and am having one hell of a difficult time with the webcam settings! The picture is either too dark or way too bright and the colours are all dull

I video call a lot with my family and while they look great i resemble a pale fuzzy panda eyed something or the other (its seriously messing with my head lol)
Any suggestions on how to fix this prob? Any optimum setting i should choose in my webcam and/or msn settings?
Grateful for any advise ppl!!!!
Thanks