Use nero's drive info tool, and see what version firmware you have on it.
http://www.cdfreaks.com/drive/355
P1.5 seems to be the newest.
Or if it has a firmware similar to these following series:
V.TW
V.VZ
V.LC
You have the BenQ brand (99.99% same drive, different name on it.)
http://www.cdfreaks.com/drive/114