Hi Midge,
You may not need to get extra burning software.
If you open your movie file in Movie Maker, you ought to be able to click File > Save Movie > For Computer and when the dialog opens use the drop arrow to select mpeg format instead.
Most DVD players cope fine with mpeg-2 or mpeg-1 format and if your DVD player is more modern ought to be fine with mpeg-4 also.
Once your movie file is in mpeg format you can then burn that to dvd as you did previously and that ought to work fine on the DVD to TV.