Instructions
Download Enigmah for free (see Resources). Unzip the downloaded folder to a new folder on your desktop.
Burn a DVD of the file "video_select_v2.iso". Make sure you select the "Load from Disc Image" or "Create new Image" option depending on the burning software you use. Press "OK," then "Burn."
Insert the DVD into your Xbox and launch the Enigmah Video Switcher utility.
Hit the "A" button on your Xbox remote to switch the format to PAL or "B" to switch back to NTSC.
Reboot your Xbox and insert the PAL disc. It will now properly load.