keypad+microC

hi!
im doing a project of implementing text display. Im going to use pic16f877a and programming with MIKROC.
Im thinking of using the keypad available in the microc help. But there only 16 keys are available.
i need to use more than 16 keys
(that means if one key is pressed i need to have 3 interruptrs like in the phone keypad.so i can have 48 keys)
Thus can u please send me an example code required for that

strange requirement.. you can rather scan all those 48 keys.. why you want to have interrupt?

he has only 16 hardware keys ... he needs to multiplex those keys as in nokia phone keypads...
correct me if i understood wrong