newbie here needs help.

[JNg]

I just bought a dreamcast about a week ago and I got a couple of games. I burned them successfully but when I put it in my dreamcast, the cd audio screen shows up. The game is self bootable(DOA2). I used Disk Juggler v 3.0. I also tried burning the Utopia Boot disk, but the same thing happens. I used Nero for this. I have a USA Dreamcast. Is it not working because of my Dreamcast?