Here are some keyboard maps I use. I know that there are many different keyboards out there and everyone needs its own map. So don't consider this list complete; and I won't extend this howto to a complete list.
keycode 176 = XF86AudioRaiseVolume keycode 174 = XF86AudioLowerVolume keycode 160 = XF86AudioMute keycode 236 = XF86Mail keycode 178 = XF86WWW
keycode 160 = XF86AudioMute keycode 174 = XF86AudioLowerVolume keycode 176 = XF86AudioRaiseVolume keycode 162 = XF86AudioPlay keycode 164 = XF86AudioStop keycode 144 = XF86AudioPrev keycode 153 = XF86AudioNext keycode 236 = XF86Mail keycode 229 = XF86Search keycode 230 = XF86Go keycode 178 = XF86HomePage keycode 223 = XF86Sleep