How many CD’s I burned using Nero?

How many cd’s I burned using Nero ???

I have internet café …
We used Nero to burn CD’s for our clients…we don’t do any illegal copying.
I want to know how many CD’s I burn everyday…
I need to monitor Nero activities, so at the end of the day, I want to know if
The workers are cheating on me or not !!!
Sometimes they told me they burned only one CD. And I want to check on that .

Please tell me how.
thank you

Do a search for a .txt file on the computer(s) for “NeroHistory”. The file should be in the Nero folder and should list everything Nero has done recently.