Ok, one last rant on this whole White Walker thing, and then I'm done with it forever.
This is what a wiki of ice and fire says about the Children and White Walkers.
"The Pact lasted for 4,000 years before the enigmatic Others invaded from the uttermost north, bringing death and destruction to both races, during an extended period of winter known as the Long Night. The children of the forest joined with the First Men, lead by the last hero, to fight against the Others in the Battle for the Dawn. Eventually the Others were driven back into the Lands of Always Winter."
So going by that, it seems that they DIDN'T create the White Walkers, and were just as vulnerable to them as we humans are. So...why the change? God I hope there's some sort of twist in there.
Also, how in the hell does shoving dragon glass (an element imbued with fire, which kills White Walkers) create an ice zombie? That's like shoving kryptonite in Superman's heart, and him getting stronger.