Volume Control settings.

Hi, I bought a new keyboard for my imac because some water hit my old one. Anyway. How do I go about setting the keys on the new keyboard to control the volume. In the settings for the keyboard it is not found

 

On my keyboard, it's the F11 (reduce volume) and the F12 (increase volume) keys. F10 used for mute.

In Mountain LIon check Apple menu > System Preferences, and then click Keyboard. Look for checkbox.

“Use all F1, F2, etc. keys as standard function keys”

 

right, but on this new keyboard its totally diff. one takes me to the dashboard while the other clears the screen.