Dougz
Those deadlifts look like you are more "knee squatting" down to the wieght.
Pity is right, get your shins close to the bar,and when you bend down to grab the bar stick your ass back, NOT your knees forward, this will keep tension in the glutes hams, you will then need to arch your back hard.I am not saying that the knees cant move forward a bit, but dont concentrate on pushing them as far forward as they are going now.
Heres a vid of GUS Wolf
http://fr.youtube.com/watch?v=zMBS5lAd1RQ
He is one sexy bastard when he pulls deadlifts.
Rippetoe has some good vids, but they can be somewhat confusing!!
http://www.crossfit.com/cf-info/excercise.html
Scroll down to the powerlifts section.
Oh and I never include the weight of the bar in my listings, its too much to think about!!
Keep us informed mate!