the only way to burn games is to ftp them over to a pc. Then burn them on a dvd disc. FTP means file transfer protocol, and it uses a crossover ethernet cable to do that.
http://en.wikipedia.org/wiki/File_Transfer_Protocol this will inform you about ftp and how it works. since the xbox is basically an old x86 or something, its pretty simpl. It has IDE cables, built in ram, and the game controller ports are actually only usb ports, but in a different form. There is an easy way to do ftp with your xbox w/ out flashfxp or a program like that. Here is the link,
http://www.xbox-scene.com/articles/ftp-ie.php