Errmm....
Okay, when not using Windows, but a high performance-system:
Check your system / distribution for a file named nvwsitch or nvtv
The syntax to fire up a tv-capable setting is:
nvtv -t -r 768,576 -s Huge -X
( PAL )
nvtv -t -r 720,480 -s Huge -X
( NTSC )
I don't know exactly the maximum safe settings for NTSC. Probably a bit more
than what I use on my tiny monitor.
When going back to Monitor, you type:
nvtv -m -r 1024,768 -X
( 1024,768 being my preferred resolution )
My Script to loook and DVD's on my TV is like this:
nvtv -t -r 768,576 -s Huge -X &
ogle -u cli
nvtv -m -r 1024,768 -X
Works nice and reliable, upon finishing DVD the display is automatically
restored to the monitor.