New ZG5 Keyboard

Hi...new to the forum and looking for some help. I have an AO 531h here in the states.....running Windows 7. I needed a new keyboard and found one priced quite nicely. Popped right in and works fine except the special function keys are completely different plus some new ones are there. For example, the new has webcam icon on FN+F9, the old one has nothing on F9 and in fact no webcam button. The old one has Mute on FN+F8 and the new one has bluetooth on FN+F8...and so on. My problem is the keys are mapped to the old keyboard...ie. FN+F8 mutes the speakers. I have searched high and low looking for models that have this keyboard and can find none that has the special function keys of this new keyboard. Part numbers match the old one and everything.

Does anyone have any ideas what I can do to find a driver to properly map the special function keys on the new keyboard?

Thanks much in advance!