Remember Using an illegal serial number your nero program can cause the funtions of some of nero to be limited.
Everytime you load nero a small logfile is sent to nero telling them the program you are using could be illegal.
so Don't trust illegal serial numbers from unknown websites - they can infect your computer with spyware.

instead Contact Nero directly to get a serial number you can check this link http://www.nero.com/nero6/enu/Lost_Seria...

If you have registered your Nero/Nero Express retail /trial version and are unable to locate it , please an e-mail to [email protected] and they will provide you a new one.
Sorry, but if you have not registered your Nero/Nero Express burner and are unable to locate your serial number, they will not be able to provide you a new key!

If you have downloaded a Nero OEM-Version,from a genuine site they will need you to provide a copy of your proof of purchase along with your name and e-mail address.they can confirm the purchase and create a new serial number for you.

Just click below;

Nero 8 Ultra Edition w/ Serial Key (download torrent) - TPB
If you do not do this you will get an annoying pop up every time you run a Nero app saying it has detected a pirated serial number and it will ask you

Sorry, but it would be illegal to post serials here. Do a google for "Serials" and click on the first link you get..that should help ;)