Sorry to post again so shortly after the first but I did more searching (patience is a virtue) and I did find out that all you have to do (if you properly burned the disc) is hit the reset button under the directional knob and your custom startup screen will appear! I am now enjoying my custom graphic.
P.S. you will not lose your memory i.e. your address book, or 3D calibration just your recent destinations will be gone.
matt