its possible. you need a program like dvd2xbox to extract the game to your xbox hdd then qwix to get the game from your hdd and convert it to xiso format.
so technically all i have to do is put the game on my computer, convert it to xiso and then burn it? which files to i convert to xiso?
you know you have to ftp the game from the xbox to the pc then make it xbox iso then burn it to dvd ... now you can however also put it to the xbox hd ... and play it from there... as mentioned before using dvd2xbox... but you dont have much space on the oem hd maybe between 0 games and 6 ..... halo 2 wont fit its like 4 gbs + and the hd varies from 4 to 6 ... its technecly 8 or 10 but the other space is used for softwares..
all that process of ftping then makeing the iso to xbox then burning coasters etc etc... easier to just pop in the game burn in on hd 3 mins to 30 and voila done !