OK, understood. Going further. By googling I figured out that for my needs (using int. osc), I need to set fuses as follows:

Oscillator: IRCIO
WDT=OFF
LVP=OFF
MCLRE=OFF
PWRTE=ON

regarding the CMCON, by googling I found it to be set to 0x07, to disable comparators. However, I was not able to find that information in datasheet (I'm sure it is in there, just I'm looking in the wrong way).

Also, how should I set clock frequency? OSCF=%0000100 ?