Ok to deal with the player that is not letting you view your file....
You can download the VLC media player as it has all the necassary codecs already installed....
http://www.videolan.org/vlc/
Also you can download the codecs for your WMP to do it...
http://www.xpcodecpack.com/
Sleeplees made a step by step walk through for Nero 7, but it should be similar to Nero 6...So that should help you on your way to burning your movie...
http://www.gnutellaforums.com/showth...highlight=nero