When You say 'vso' file do you mean 'iso' or you used vsodivxtodvd? if you haven't used divxtodvd, trust me, use it. You will be amazed at how easy it is to convert your movies. To find all of the functions of Nero, what i do is open the program using the 'Start Smart' Menu. It will show you all of the features of Nero How many there are depends on which version you have. If it was preinstalled, you wont have as many functions as a full enterprise edition. The file on your HD, is it one file with a .mp4 extension? If so its the wrong type of file to play in a dvd player. Thats why you should use divxtodvd. It will create the necessary VIDEO_TS folder. In order the movie to play in dvd player, there must be a VIDEO_TS folder and a empty AUDIO_TS folder on the dvd. After you have converted with divxtodvd, you can manually create the AUDIO_TS folder or have nero do it for you.