I don't know much about the details either, but IG maker can export to XB. From their website:
"Completed games can be exported in non-Windows formats. One format available is the XNA Game Studio format for play on XBox 360 systems. Now games can be shared with even more players! A variety of screen resolutions are available to better suit the output format.
*You must be a member of the XNA Creators Club to enable play of games made using this tool on Xbox 360 systems."