no nothing special to do just install it.You can choose it in themes or apperance, the only real difference I see is when u pick it in themes it changes ur wallpaper, which is a pretty cool bliss variation.
It wont slow anything down either since its a M$ skin.
With all due respect John, I am the head of IT and I have it on good authority. If you type "Google" into Google, you can break the Internet. So please, no one try it, even for a joke.........It's not a laughing matter. You can break the Internet.