PLEASE??????Help with Crazy Taxi

[luke]

First off, I am a newbie, but this is the first problem I have had with any games. I have a CDI image of Crazy Taxi. When I burn it everything goes fine. I load the game into the dream cast and I get the SEGA screen the a text message comes up that says "Loading Crazy taxi (15k)". Then it goes onto a new screen that says now loading and does not go any further.. These screens are black with no graphics. Could someone please give me some direction?????