Just be aware that as Nero only allows one copy of itself on your box, your OEM Nero is useless, you have two different brands of DVD burner, the OEM Nero will only operate the burner the software came with.
I gave them an earful last year because of this issue, I had a pioneer Burner, and a liteon burner, both with OEM version of Nero, but could only install one, so no matter which one I installed, the other burner could not be used.
There answer - buy a third full copy of Nero (the price of the first 2 was obviously built into the price of the burners, but no discount offered). Bums!
I cant tell you how I fixed my problem, it is not allowed to be discussed on the forum!