The 'good' is that if you know what you are doing, you can navigate through the myriad menues to reach the point where manufacturing the ISO of your choice becomes simple.
On the other hand, if you're inexperienced it can be an absolute minefield to navigate through.
Better choice would be to use MagicDisc:
http://www.download.com/MagicDisc/3000-7970_4-10383679.html
If you take the BURN out of Nero - MagicDisc beats it hands-down!!
Plus - MagicDisc is FREE which is better than NERO. - [i]Unless you're doing what the majority of the non-computer-speak think of us geeks!![/i] ..which is totally unfounded. ;)