Welcome to the forum
On this PC, which is running Vista SP2, I find Nero 8 (v126.96.36.199) works great for all I need. There isn't any reason for my using that specific version number, I'm just too lazy to update further, when it works just fine.
I have tried Nero 9 with both Vista and XP, but just couldn't get on with it, some of the various components (Burning ROM, Nero Recode etc) just seemed to take an age to load. My PCs aren't the fastest, but it still should have been OK - haven't nailed where the the problem lies as yet though.