That RAM has a 667 MHz front-side bus speed. It's slower than the 800 MHz bus speed found in the new white MacBooks.
RAM that has 200 pins, SODIMM, PC5300 RAM with a speed of 800 MHz (or faster) will work with the new white MacBooks. Perhaps 667 MHz RAM (like the link provided earlier) will work, but why the heck would you bother?
Basically, any RAM with a bus speed of 800 MHz (e.g: 800 MHz, 1066 MHz) will work on your system, which should have a bus speed of 800 MHz (I think). If you buy 1066 MHz RAM for your white MacBook, it'll just scale down the speed and operate at your computer's bus speed (800 MHz). RAM that is slower than your system's bus speed (e.g. 667 MHz RAM on your system, which has an 800 MHz bus speed) slows your system.