How do you remove the keyboard keys in order to clean the keyboard?

There is a small hole to the right of the DVD drive eject button. To force the drive open, stick a paperclip into the hole and the drive should pop out.

Turn off your computer, and turn it back on. Before you boot into Windows, hold down the function (fn) key while also pressing F8 on your laptop keyboard. You should be able to access Safe Mode from the advanced startup screen.