Gnutella Forums - using nero 7 ultra edition burning rom

ok so here is the thing after i have downloaded the movie via limewire and its mpg form its in the limewire library and in my shared files folder i open up my nero burning rom 7 this is the directions they say to do to burn a dvd video

With Nero Burning ROM 7 you can burn a DVD if the DVD-Video title is already available. If, on the other hand, you would like to convert video files into a DVD-Video title, you can use Nero Vision 4 but not Nero Burning ROM 7.

Start Nero Burning ROM 7.
Click on the drop-down list box and select the 'DVD' media type.

Select the 'DVD-Video' compilation, thereby bringing the 'ISO' tab to the foreground.
Click on the 'New' button to finish selection of the compilation. The Nero Burning ROM 7 file browser opens in which you select the files to be burned.
Select all available files of the DVD-Video title on the right-hand side of the file browser and drag them to the left-hand side.

Click on the icon to switch to the burn area. You are then ready to burn the DVD. For more information on how to do this, please read the chapter 'Burning a disc'.

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ok so what is a video title that would need? i downloaded house of wax 2005 version movie and when i open nero to burn it
the file is on my comp but nero doesnt open the file its like the movie doesnt exist?? it comes up sais unexpected file format
so do i have to convert the movie sing nero? and convert it to
nero digital or recode dvd video?
help please thanx