The Rev. Dr. David P. Murray of Reformation International Theological Seminary brings his expertise to the study of the creation account in Genesis. His message on "Why Study Creation" is available at SermonAudio. It is well worth your time.
You can listen to it from the page, or download it. Note that if you click on "Download MP3", you are taken to a sign-up screen. If you do not wish to sign up, click "Maybe Later" and your download starts immediately.