We've done some testing with Nero 7 under Vista, and it's not doing so good as it is as of today.
But it was not designed to support Vista with this version, so that's not too surprising.
We were going to have VISTA support in our next majore update of Nero 7 coming out in the third quarter this year. But with Microsoft pushing the release date of VISA OS back, we did the same to give us more time to support new features and properly QA the product.
We wish to avoid the issues we had with the initial release of Nero 7, when it comes to supporting the VISTA OS.