ATmega2560 Interrupt change for RFM12S module?

Hello,

I need help by changing the Interrupt Pin at ATmega2560 with RFM12 radio module and Jeelib Library.
As standart is IRQ2 defined but I need to change it to IRQ3 or others.
I try it according to this explaination but without success, I assume this is only valid for Atmel328..?

http://jeelabs.org/2012/01/06/pin-change-interrupts-for-rf12/

#if defined(__AVR_ATmega2560__) || defined(__AVR_ATmega1280__)

#define RFM_IRQ     3
#define SS_DDR      DDRB
#define SS_PORT     PORTB
#define SS_BIT      0

#define SPI_SS      53    // PB0, pin 19
#define SPI_MOSI    51    // PB2, pin 21
#define SPI_MISO    50    // PB3, pin 22
#define SPI_SCK     52    // PB1, pin 20

Thankfull for any help
Snoops