I replaced ours not too long ago, I used this step by step directions from this site. Click here
It was pretty easy for the first time doing it.
Hope this helps, If you need anything else please feel free to ask. If you found this helpful don't forget to click the *ACCEPT* button and please take a moment to leave me *POSITIVE* feedback.
Handywoman
Remodeling & fixing things from Drywall, Flooring, Electrical, appliances for 20 years