Nero 7 essentials doesn’t include the usage of Nero Vision. Its loaded in memory but it can’t be used with the ‘Essentials’ version. You need the full Nero 7 license to run Nero Vision, as well a many other Nero modules. You have to upgrade and since they don’t license Nero 7 as an upgrade any more, you have to upgrade to Nero 8.
I got [B]Power Producer[/B] with my Nero 7 essentials. You can use that to edit .mpg files, and merge them, and burn them as DVD-Video. Or VR format.