I recently switched from the large white Apple Keyboard (A1048) to the compact Apple Wireless Keyboard (A1314).
I was really happy with the new one, except for one thing – on my old keyboard I made heavy use of the numeric keypad, so I realised that neither the new keyboard nor the Macbook Pro keyboard itself offer a feature which was there on my older PowerBook G4: the availability of a numeric keypad equivalent by pushing the fn-key and 789/UIO/JKL/M.
Fortunately, I ran into a nice software by Takayama Fumihiko – KeyRemap4MacBook. It will activate the old functionality, and what is more, it has to offer all kinds of custom key remappings as well as customisation of key repeat rates and whatnot, just in case you need …