This is my first post and am totally new to PIC. I wish to configure 18F4620 to internal oscillator at 4 MHz.

INCLUDE "P18F4620.INC" ; MPASM Header

I changed OSC_HS to OSC_INTOSC2 but that was undefined so what is the label? More information on .inc definitions?

I used INTRC (INTIO2) in meProg which seemed to work (how to make that the default) but the speed was 1MHz.

OSCCON = %01100000

No help, still at 1MHz.