Sadly this pin cannot be used as an output. It can however be used as an input.
If you fight you way though the datasheet this (and other things) are explained.
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
Dear Sirs:
I want Know how put to work like a regular pin, the pin 4, gpio.3 of 12F675, Tanks you in advance for your appreciated answer
Sadly this pin cannot be used as an output. It can however be used as an input.
If you fight you way though the datasheet this (and other things) are explained.
Tanks you David for your help.