Hi,
Generally speaking the INT0 interrupt is on PortB.0 and the Interrupt on change feature is on PortB.4-7. With that being said the dataheet for your particular PIC has specific info on each interrupt and how it is controlled. Some have more than one external interrupt (INT1 etc) some don't, some can enable/disable the IOC feature on individual pins (within the predefined group), some can't etc etc.

/Henrik.