How can i copy a Dreamcast Game ?

I really dont know how to copy a dreamcast game. First i got all the tools needed. Except programs to burn a DC GD-Rom. I cant burn it. SO, please tell me how to make it works. I really need this help. I already got a boot up disk. Only thing needed is a program to make it possible to copy the GD-ROM game to a CD-R 700mb.