Hi mattr652 , welcome to the forum.
The first thing to ask is. What kind of region is your XBOX and what kind of drive is in it ? The reason i ask is because the first batch of XBOXes had very crappy dvd players (Thompson).
If your XBOX is not modified (called modchip : new chip , new bios , etc) the chance of success might be slim. The dongle included with the remote control is also a necessity to playback dvd-movies in your xbox.
Assuming you have a non-modified XBOX with a Region 1 dongle and remote control , the chance of success is again .. slim.
The XBOX won't usually accept any other media than just DVD-movie. Changing the bitsetting of your writer MIGHT help , but in my case (A philips DVDRW416K modified to act like a Nec 1300A) it didn't.
My XBOX will accept everything (CD-RW , DVD+ , DVD- , DVD-movie) when i use the built-in modchip. If i do not use the built-in modchip (yes , i can disable it) , the XBOX will not accept anything other than original dvd-games and dvd movies (which in my case must be region 2 only).