Windows Movie Maker

Hello,

My son made a great video, special effects etc, using Windows Movie Maker.
But we are unable to use a format the TV dvd player will recognize.
The player has a long list of formats it will recognize.

Windows Movie Maker says it can be put on a cd for viewing on any dvd player, two days trying on different computers but its still not working.

We tried Nero, Intervideo WinDVD.

We tried to change it to WMP, MP3, MP4, CD-RW etc, etc, with no luck.

It seems to use an unrecognizable format.
I know I'm doing something wrong but what?
Any one have any ideas.

Your help would be greatly appreciated.

Chris.