Video Playing Format

I have some DVD ripped and copied to ATV ie. I copied the VIDEO_TS folder from the disk to ATV.
When DVD disks played on DVD machine they are showing in 16:9 format but they are showing in 4:3 format in both NitoTV and XBMC.

Is there anyway to force XBMC or NitoTV plays these video to 16:9 format?

My second quetion:
Within nfo files there are , and tags … does nfo files tells xbmc how to play the video or they just act as info for users?

Any help, comment or suggestion appreciated …

Has the Smart Installer be run? This will greatly improve DVD playback.

Yes its installed first time as part of the ATVFlash installation process …