are you saying you don't have a dvd burner on that computer? i'm confused now...
theoretically the easiest way would be to import and do all your editing in premiere, export to an image file on your hard drive, do any shrinking and transcoding that is necessary with dvd shrink from that image file, then burn with nero burning rom.
if this is not possible i'm totally missing why...
do you do your burning somewhere other than where you do your editing? like are premiere and nero on different computers?
if that's the case then your best bet to avoid over processing wouldbe to invest in a cheap external drive (or an internal drive and an inexpensive enclosure) to transport the dvd image file from premiere to the computer that has the dvd burner.
you can also download dvd shrink to the computer that has premiere in order to shrink the dvd down to size before taking it to the computer than can burn it then just use nero burning rom rather than vision
or am i way off base about your situation?
i know i'm not being very helpful as far as nero vision goes, but nero can be quite buggy. I'm just trying to offer alternatives in case no one has any input about what might cause the issue with nero. it's very possible that it's some random bug or something.