Default Continuum Lockscreen

when you set an unlock pattern for your phone, instead of having to slide the puzzle piece across the screen to unlock your phone, you get a 3x3 grid of dots you have to connect. i was wondering if it would be possible to make it so that instead of seeing the 3x3 grid of dots when you turn on your phone, you see the puzzle piece lockscreen and when you slide the piece, you get the 3x3 grid. i was also wondering if anybody has managed to change the unlock sound? and create an animation when you lock your phone, like with cyanogenmod?