How do you change a headlight in a 1998 buick century?

go to the autozone, ask to buy a headlight for the car. They will look in their book and show you what the number is and might even take it off the rack for you. Ask them how it's replaced. It's really a simple job, unplug, twist the bulb and plug in the new bulb, twist and hook up the hot wire, test it and you're ready to go.