You can download a trial copy of Nero from ww.nero.com but it is a large 13
Mb file. It can also be bought in the computer shops/ The nrg file would ha
ve been created when you tried to make a Video cd, you have a choice as reg
ards the file extension but yours must have been set to .nrg. To create a v
cd, that nrg would have to be burned using Nero.