How do you keep a kitten out of your room?

You just cannot do that ,because the window is just like a television screen for your cat.it keeps him busy. Answer:Yeah, they love looking outside! if the problem is that your cat's clawing at your window screen and pushing on it when you have the window open, I guess you can try having lemon/orange scents all over the window screen and hope that the cat will hate it enough not to be around it.